Updated ethash

Godeps/Godeps.json

@@ -22,8 +22,8 @@
 		},
 		{
 			"ImportPath": "github.com/ethereum/ethash",
-			"Comment": "v17-64-ga323708",
-			"Rev": "a323708b8c4d253b8567bf6c72727d1aec302225"
+			"Comment": "v23-11-g5376ec8",
+			"Rev": "5376ec8816d6bf787d4fc91a08b4527bc5e1f469"
 		},
 		{
 			"ImportPath": "github.com/ethereum/serpent-go",

Godeps/_workspace/src/github.com/ethereum/ethash/.gitignore

@@ -8,3 +8,5 @@ pyethash.egg-info/
 *.so
 *~
 *.swp
+MANIFEST
+dist/

Godeps/_workspace/src/github.com/ethereum/ethash/CMakeLists.txt

@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 2.8.7)
 project(ethash)
 
-set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules/")
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/modules/")
 set(ETHHASH_LIBS ethash)
 
 if (WIN32 AND WANT_CRYPTOPP)
@@ -10,6 +10,12 @@ endif()
 
 add_subdirectory(src/libethash)
 # bin2h.cmake doesn't work
-#add_subdirectory(src/libethash-cl EXCLUDE_FROM_ALL)
+if (NOT OpenCL_FOUND)
+	find_package(OpenCL)
+endif()
+
+if (OpenCL_FOUND)
+	add_subdirectory(src/libethash-cl)
+endif()
 add_subdirectory(src/benchmark EXCLUDE_FROM_ALL)
 add_subdirectory(test/c EXCLUDE_FROM_ALL)

Godeps/_workspace/src/github.com/ethereum/ethash/MANIFEST.in

@@ -0,0 +1,17 @@
+include setup.py
+
+# C sources
+include src/libethash/internal.c
+include src/libethash/sha3.c
+include src/libethash/util.c
+include src/python/core.c
+
+# Headers
+include src/libethash/compiler.h
+include src/libethash/data_sizes.h
+include src/libethash/endian.h
+include src/libethash/ethash.h
+include src/libethash/fnv.h
+include src/libethash/internal.h
+include src/libethash/sha3.h
+include src/libethash/util.h

Godeps/_workspace/src/github.com/ethereum/ethash/Makefile

@@ -1,3 +1,6 @@
-.PHONY: clean
+.PHONY: clean test
+test:
+	./test/test.sh
+
 clean:
-	rm -rf *.so pyethash.egg-info/ build/ test/python/python-virtual-env/ test/c/build/ pyethash/*.{so,pyc}
+	rm -rf *.so pyethash.egg-info/ build/ test/python/python-virtual-env/ test/c/build/ pyethash.so test/python/*.pyc dist/ MANIFEST

Godeps/_workspace/src/github.com/ethereum/ethash/cryptopp/CMakeLists.txt

@@ -8,6 +8,6 @@ file(GLOB SOURCE "../../cryptopp/*.cpp")
 
 add_library(${LIBRARY} ${HEADERS} ${SOURCE})
 
-set(CRYPTOPP_INCLUDE_DIRS "../.." PARENT_SCOPE)
+set(CRYPTOPP_INCLUDE_DIRS "../.." "../../../" PARENT_SCOPE)
 set(CRYPTOPP_LIBRARIES ${LIBRARY} PARENT_SCOPE)
 set(CRYPTOPP_FOUND TRUE PARENT_SCOPE)

Godeps/_workspace/src/github.com/ethereum/ethash/ethash.go

@@ -1,3 +1,13 @@
+/*
+###################################################################################
+###################################################################################
+####################                                           ####################
+####################  EDIT AND YOU SHALL FEEL MY WRATH - jeff  ####################
+####################                                           ####################
+###################################################################################
+###################################################################################
+*/
+
 package ethash
 
 /*
@@ -11,8 +21,8 @@ import "C"
 import (
 	"bytes"
 	"encoding/binary"
+	"fmt"
 	"io/ioutil"
-	"log"
 	"math/big"
 	"math/rand"
 	"os"
@@ -21,25 +31,26 @@ import (
 	"time"
 	"unsafe"
 
+	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/ethutil"
 	"github.com/ethereum/go-ethereum/logger"
 	"github.com/ethereum/go-ethereum/pow"
 )
 
-var tt256 = new(big.Int).Exp(big.NewInt(2), big.NewInt(256), big.NewInt(0))
+var minDifficulty = new(big.Int).Exp(big.NewInt(2), big.NewInt(256), big.NewInt(0))
 
 var powlogger = logger.NewLogger("POW")
 
-type DAG struct {
-	SeedBlockNum uint64
-	dag          unsafe.Pointer // full GB of memory for dag
-	file         bool
-}
-
 type ParamsAndCache struct {
 	params *C.ethash_params
 	cache  *C.ethash_cache
-	SeedBlockNum uint64
+	Epoch  uint64
+}
+
+type DAG struct {
+	dag            unsafe.Pointer // full GB of memory for dag
+	file           bool
+	paramsAndCache *ParamsAndCache
 }
 
 type Ethash struct {
@@ -48,10 +59,9 @@ type Ethash struct {
 	chainManager   pow.ChainManager
 	dag            *DAG
 	paramsAndCache *ParamsAndCache
-	nextdag        unsafe.Pointer
 	ret            *C.ethash_return_value
-	dagMutex       *sync.Mutex
-	cacheMutex     *sync.Mutex
+	dagMutex       *sync.RWMutex
+	cacheMutex     *sync.RWMutex
 }
 
 func parseNonce(nonce []byte) (uint64, error) {
@@ -65,151 +75,212 @@ func parseNonce(nonce []byte) (uint64, error) {
 
 const epochLength uint64 = 30000
 
-func GetSeedBlockNum(blockNum uint64) uint64 {
-	var seedBlockNum uint64 = 0
-	if blockNum > epochLength {
-		seedBlockNum = ((blockNum - 1) / epochLength) * epochLength
-	}
-	return seedBlockNum
-}
-
-/*
-XXX THIS DOESN'T WORK!! NEEDS FIXING
-blockEpoch will underflow and wrap around causing massive issues
-func GetSeedBlockNum(blockNum uint64) uint64 {
-	var seedBlockNum uint64 = 0
-	if blockNum > epochLength {
-		seedBlockNum = ((blockNum - 1) / epochLength) * epochLength
-	}
-	return seedBlockNum
+func makeParamsAndCache(chainManager pow.ChainManager, blockNum uint64) (*ParamsAndCache, error) {
+	if blockNum >= epochLength*2048 {
+		return nil, fmt.Errorf("block number is out of bounds (value %v, limit is %v)", blockNum, epochLength*2048)
 	}
-*/
-
-func makeParamsAndCache(chainManager pow.ChainManager, blockNum uint64) *ParamsAndCache {
-	seedBlockNum := GetSeedBlockNum(blockNum)
 	paramsAndCache := &ParamsAndCache{
 		params: new(C.ethash_params),
 		cache:  new(C.ethash_cache),
-		SeedBlockNum: seedBlockNum,
+		Epoch:  blockNum / epochLength,
 	}
-	C.ethash_params_init(paramsAndCache.params, C.uint32_t(seedBlockNum))
+	C.ethash_params_init(paramsAndCache.params, C.uint32_t(uint32(blockNum)))
 	paramsAndCache.cache.mem = C.malloc(paramsAndCache.params.cache_size)
-	seedHash := chainManager.GetBlockByNumber(seedBlockNum).SeedHash()
 
-	log.Println("Making Cache")
+	seedHash, err := GetSeedHash(blockNum)
+	if err != nil {
+		return nil, err
+	}
+
+	powlogger.Infoln("Making Cache")
 	start := time.Now()
 	C.ethash_mkcache(paramsAndCache.cache, paramsAndCache.params, (*C.uint8_t)(unsafe.Pointer(&seedHash[0])))
-	log.Println("Took:", time.Since(start))
+	powlogger.Infoln("Took:", time.Since(start))
 
-	return paramsAndCache
+	return paramsAndCache, nil
 }
 
-func (pow *Ethash) updateCache() {
+func (pow *Ethash) UpdateCache(force bool) error {
 	pow.cacheMutex.Lock()
-	seedNum := GetSeedBlockNum(pow.chainManager.CurrentBlock().NumberU64())
-	if pow.paramsAndCache.SeedBlockNum != seedNum {
-		pow.paramsAndCache = makeParamsAndCache(pow.chainManager, pow.chainManager.CurrentBlock().NumberU64())
+	thisEpoch := pow.chainManager.CurrentBlock().NumberU64()
+	if force || pow.paramsAndCache.Epoch != thisEpoch {
+		var err error
+		pow.paramsAndCache, err = makeParamsAndCache(pow.chainManager, pow.chainManager.CurrentBlock().NumberU64())
+		if err != nil {
+			panic(err)
+		}
 	}
 	pow.cacheMutex.Unlock()
+	return nil
 }
 
 func makeDAG(p *ParamsAndCache) *DAG {
 	d := &DAG{
 		dag:            C.malloc(p.params.full_size),
-		SeedBlockNum: p.SeedBlockNum,
+		file:           false,
+		paramsAndCache: p,
+	}
+
+	donech := make(chan string)
+	go func() {
+		t := time.NewTicker(5 * time.Second)
+		tstart := time.Now()
+	done:
+		for {
+			select {
+			case <-t.C:
+				powlogger.Infof("... still generating DAG (%v) ...\n", time.Since(tstart).Seconds())
+			case str := <-donech:
+				powlogger.Infof("... %s ...\n", str)
+				break done
 			}
+		}
+	}()
 	C.ethash_compute_full_data(d.dag, p.params, p.cache)
+	donech <- "DAG generation completed"
 	return d
 }
 
-func (pow *Ethash) writeDagToDisk(dag *DAG, seedNum uint64) *os.File {
-	data := C.GoBytes(unsafe.Pointer(dag.dag), C.int(pow.paramsAndCache.params.full_size))
+func (pow *Ethash) writeDagToDisk(dag *DAG, epoch uint64) *os.File {
+	if epoch > 2048 {
+		panic(fmt.Errorf("Epoch must be less than 2048 (is %v)", epoch))
+	}
+	data := C.GoBytes(unsafe.Pointer(dag.dag), C.int(dag.paramsAndCache.params.full_size))
 	file, err := os.Create("/tmp/dag")
 	if err != nil {
 		panic(err)
 	}
 
-	num := make([]byte, 8)
-	binary.BigEndian.PutUint64(num, seedNum)
+	dataEpoch := make([]byte, 8)
+	binary.BigEndian.PutUint64(dataEpoch, epoch)
 
-	file.Write(num)
+	file.Write(dataEpoch)
 	file.Write(data)
 
 	return file
 }
 
 func (pow *Ethash) UpdateDAG() {
-	pow.cacheMutex.Lock()
-	pow.dagMutex.Lock()
+	blockNum := pow.chainManager.CurrentBlock().NumberU64()
+	if blockNum >= epochLength*2048 {
+		// This will crash in the 2030s or 2040s
+		panic(fmt.Errorf("Current block number is out of bounds (value %v, limit is %v)", blockNum, epochLength*2048))
+	}
 
-	seedNum := GetSeedBlockNum(pow.chainManager.CurrentBlock().NumberU64())
-	if pow.dag == nil || pow.dag.SeedBlockNum != seedNum {
+	pow.dagMutex.Lock()
+	defer pow.dagMutex.Unlock()
+	thisEpoch := blockNum / epochLength
+	if pow.dag == nil || pow.dag.paramsAndCache.Epoch != thisEpoch {
 		if pow.dag != nil && pow.dag.dag != nil {
 			C.free(pow.dag.dag)
 			pow.dag.dag = nil
 		}
 
+		if pow.dag != nil && pow.dag.paramsAndCache.cache.mem != nil {
+			C.free(pow.dag.paramsAndCache.cache.mem)
+			pow.dag.paramsAndCache.cache.mem = nil
+		}
+
+		// Make the params and cache for the DAG
+		paramsAndCache, err := makeParamsAndCache(pow.chainManager, blockNum)
+		if err != nil {
+			panic(err)
+		}
+
+		// TODO: On non-SSD disks, loading the DAG from disk takes longer than generating it in memory
+		pow.paramsAndCache = paramsAndCache
 		path := path.Join("/", "tmp", "dag")
 		pow.dag = nil
-		log.Println("Generating dag")
+		powlogger.Infoln("Retrieving DAG")
 		start := time.Now()
 
 		file, err := os.Open(path)
 		if err != nil {
-			log.Printf("No dag found in '%s'. Generating new dago(takes a while)...", path)
-			pow.dag = makeDAG(pow.paramsAndCache)
-			file = pow.writeDagToDisk(pow.dag, seedNum)
+			powlogger.Infof("No DAG found. Generating new DAG in '%s' (this takes a while)...\n", path)
+			pow.dag = makeDAG(paramsAndCache)
+			file = pow.writeDagToDisk(pow.dag, thisEpoch)
+			pow.dag.file = true
 		} else {
 			data, err := ioutil.ReadAll(file)
 			if err != nil {
-				panic(err)
+				powlogger.Infof("DAG load err: %v\n", err)
 			}
 
-			num := binary.BigEndian.Uint64(data[0:8])
-			if num < seedNum {
-				log.Printf("Old found. Generating new dag (takes a while)...")
-				pow.dag = makeDAG(pow.paramsAndCache)
-				file = pow.writeDagToDisk(pow.dag, seedNum)
+			if len(data) < 8 {
+				powlogger.Infof("DAG in '%s' is less than 8 bytes, it must be corrupted. Generating new DAG (this takes a while)...\n", path)
+				pow.dag = makeDAG(paramsAndCache)
+				file = pow.writeDagToDisk(pow.dag, thisEpoch)
+				pow.dag.file = true
+			} else {
+				dataEpoch := binary.BigEndian.Uint64(data[0:8])
+				if dataEpoch < thisEpoch {
+					powlogger.Infof("DAG in '%s' is stale. Generating new DAG (this takes a while)...\n", path)
+					pow.dag = makeDAG(paramsAndCache)
+					file = pow.writeDagToDisk(pow.dag, thisEpoch)
+					pow.dag.file = true
+				} else if dataEpoch > thisEpoch {
+					// FIXME
+					panic(fmt.Errorf("Saved DAG in '%s' reports to be from future epoch %v (current epoch is %v)\n", path, dataEpoch, thisEpoch))
+				} else if len(data) != (int(paramsAndCache.params.full_size) + 8) {
+					powlogger.Infof("DAG in '%s' is corrupted. Generating new DAG (this takes a while)...\n", path)
+					pow.dag = makeDAG(paramsAndCache)
+					file = pow.writeDagToDisk(pow.dag, thisEpoch)
+					pow.dag.file = true
 				} else {
 					data = data[8:]
 					pow.dag = &DAG{
 						dag:            unsafe.Pointer(&data[0]),
 						file:           true,
-					SeedBlockNum: pow.paramsAndCache.SeedBlockNum,
+						paramsAndCache: paramsAndCache,
+					}
 				}
 			}
 		}
-		log.Println("Took:", time.Since(start))
+		powlogger.Infoln("Took:", time.Since(start))
 
 		file.Close()
 	}
-
-	pow.dagMutex.Unlock()
-	pow.cacheMutex.Unlock()
 }
 
 func New(chainManager pow.ChainManager) *Ethash {
+	paramsAndCache, err := makeParamsAndCache(chainManager, chainManager.CurrentBlock().NumberU64())
+	if err != nil {
+		panic(err)
+	}
+
 	return &Ethash{
 		turbo:          true,
-		paramsAndCache: makeParamsAndCache(chainManager, chainManager.CurrentBlock().NumberU64()),
+		paramsAndCache: paramsAndCache,
 		chainManager:   chainManager,
 		dag:            nil,
-		cacheMutex:     new(sync.Mutex),
-		dagMutex:       new(sync.Mutex),
+		cacheMutex:     new(sync.RWMutex),
+		dagMutex:       new(sync.RWMutex),
 	}
 }
 
 func (pow *Ethash) DAGSize() uint64 {
-	return uint64(pow.paramsAndCache.params.full_size)
+	return uint64(pow.dag.paramsAndCache.params.full_size)
 }
 
 func (pow *Ethash) CacheSize() uint64 {
 	return uint64(pow.paramsAndCache.params.cache_size)
 }
 
-func (pow *Ethash) GetSeedHash(blockNum uint64) []byte {
-	seednum := GetSeedBlockNum(blockNum)
-	return pow.chainManager.GetBlockByNumber(seednum).SeedHash()
+func GetSeedHash(blockNum uint64) ([]byte, error) {
+	if blockNum >= epochLength*2048 {
+		return nil, fmt.Errorf("block number is out of bounds (value %v, limit is %v)", blockNum, epochLength*2048)
+	}
+
+	epoch := blockNum / epochLength
+	seedHash := make([]byte, 32)
+	var i uint64
+	for i = 0; i < 32; i++ {
+		seedHash[i] = 0
+	}
+	for i = 0; i < epoch; i++ {
+		seedHash = crypto.Sha3(seedHash)
+	}
+	return seedHash, nil
 }
 
 func (pow *Ethash) Stop() {
@@ -224,17 +295,18 @@ func (pow *Ethash) Stop() {
 	if pow.dag.dag != nil && !pow.dag.file {
 		C.free(pow.dag.dag)
 	}
+	if pow.dag != nil && pow.dag.paramsAndCache != nil && pow.dag.paramsAndCache.cache.mem != nil {
+		C.free(pow.dag.paramsAndCache.cache.mem)
+		pow.dag.paramsAndCache.cache.mem = nil
+	}
 	pow.dag.dag = nil
 }
 
 func (pow *Ethash) Search(block pow.Block, stop <-chan struct{}) (uint64, []byte, []byte) {
-	//pow.UpdateDAG()
+	pow.UpdateDAG()
 
-	// Not very elegant, multiple mining instances are not supported
-	//pow.dagMutex.Lock()
-	//pow.cacheMutex.Lock()
-	//defer pow.cacheMutex.Unlock()
-	//defer pow.dagMutex.Unlock()
+	pow.dagMutex.RLock()
+	defer pow.dagMutex.RUnlock()
 
 	r := rand.New(rand.NewSource(time.Now().UnixNano()))
 	miningHash := block.HashNoNonce()
@@ -246,7 +318,7 @@ func (pow *Ethash) Search(block pow.Block, stop <-chan struct{}) (uint64, []byte
 
 	nonce := uint64(r.Int63())
 	cMiningHash := (*C.uint8_t)(unsafe.Pointer(&miningHash[0]))
-	target := new(big.Int).Div(tt256, diff)
+	target := new(big.Int).Div(minDifficulty, diff)
 
 	var ret C.ethash_return_value
 	for {
@@ -262,14 +334,17 @@ func (pow *Ethash) Search(block pow.Block, stop <-chan struct{}) (uint64, []byte
 			hashes := ((float64(1e9) / float64(elapsed)) * float64(i-starti)) / 1000
 			pow.HashRate = int64(hashes)
 
-			C.ethash_full(&ret, pow.dag.dag, pow.paramsAndCache.params, cMiningHash, C.uint64_t(nonce))
+			C.ethash_full(&ret, pow.dag.dag, pow.dag.paramsAndCache.params, cMiningHash, C.uint64_t(nonce))
 			result := ethutil.Bytes2Big(C.GoBytes(unsafe.Pointer(&ret.result[0]), C.int(32)))
 
+			// TODO: disagrees with the spec https://github.com/ethereum/wiki/wiki/Ethash#mining
 			if result.Cmp(target) <= 0 {
 				mixDigest := C.GoBytes(unsafe.Pointer(&ret.mix_hash[0]), C.int(32))
-
-				return nonce, mixDigest, pow.GetSeedHash(block.NumberU64())
-
+				seedHash, err := GetSeedHash(block.NumberU64()) // This seedhash is useless
+				if err != nil {
+					panic(err)
+				}
+				return nonce, mixDigest, seedHash
 			}
 
 			nonce += 1
@@ -283,32 +358,41 @@ func (pow *Ethash) Search(block pow.Block, stop <-chan struct{}) (uint64, []byte
 }
 
 func (pow *Ethash) Verify(block pow.Block) bool {
-	// Make sure the SeedHash is set correctly
-	if bytes.Compare(block.SeedHash(), pow.GetSeedHash(block.NumberU64())) != 0 {
-		return false
-	}
 
 	return pow.verify(block.HashNoNonce(), block.MixDigest(), block.Difficulty(), block.NumberU64(), block.Nonce())
 }
 
 func (pow *Ethash) verify(hash []byte, mixDigest []byte, difficulty *big.Int, blockNum uint64, nonce uint64) bool {
-	// First check: make sure header, mixDigest, nonce are correct without hitting the DAG
+	// Make sure the block num is valid
+	if blockNum >= epochLength*2048 {
+		powlogger.Infoln(fmt.Sprintf("Block number exceeds limit, invalid (value is %v, limit is %v)",
+			blockNum, epochLength*2048))
+		return false
+	}
+
+	// First check: make sure header, mixDigest, nonce are correct without hitting the cache
 	// This is to prevent DOS attacks
 	chash := (*C.uint8_t)(unsafe.Pointer(&hash[0]))
 	cnonce := C.uint64_t(nonce)
-	target := new(big.Int).Div(tt256, difficulty)
+	target := new(big.Int).Div(minDifficulty, difficulty)
 
 	var pAc *ParamsAndCache
 	// If its an old block (doesn't use the current cache)
 	// get the cache for it but don't update (so we don't need the mutex)
-	// Otherwise, it's the current block or a future.
+	// Otherwise, it's the current block or a future block.
 	// If current, updateCache will do nothing.
-	if GetSeedBlockNum(blockNum) < pow.paramsAndCache.SeedBlockNum {
-		pAc = makeParamsAndCache(pow.chainManager, blockNum)
+	if blockNum/epochLength < pow.paramsAndCache.Epoch {
+		var err error
+		// If we can't make the params for some reason, this block is invalid
+		pAc, err = makeParamsAndCache(pow.chainManager, blockNum)
+		if err != nil {
+			powlogger.Infoln(err)
+			return false
+		}
 	} else {
-		pow.updateCache()
-		pow.cacheMutex.Lock()
-		defer pow.cacheMutex.Unlock()
+		pow.UpdateCache(false)
+		pow.cacheMutex.RLock()
+		defer pow.cacheMutex.RUnlock()
 		pAc = pow.paramsAndCache
 	}
 

Godeps/_workspace/src/github.com/ethereum/ethash/pyethash/.gitignore

@@ -1,2 +0,0 @@
-pyethash.egg-info/
-*.so

Godeps/_workspace/src/github.com/ethereum/ethash/pyethash/__init__.py

@@ -1,3 +0,0 @@
-import pyethash.core
-core = pyethash.core
-EPOCH_LENGTH = 30000

Godeps/_workspace/src/github.com/ethereum/ethash/setup.py

@@ -1,21 +1,33 @@
 #!/usr/bin/env python
 from distutils.core import setup, Extension
  
-pyethash_core = Extension('pyethash.core', 
+pyethash = Extension('pyethash', 
         sources = [
             'src/python/core.c', 
             'src/libethash/util.c', 
             'src/libethash/internal.c',
-            'src/libethash/sha3.c'
+            'src/libethash/sha3.c'],
+        depends = [
+            'src/libethash/ethash.h',
+            'src/libethash/compiler.h',
+            'src/libethash/data_sizes.h',
+            'src/libethash/endian.h',
+            'src/libethash/ethash.h',
+            'src/libethash/fnv.h',
+            'src/libethash/internal.h',
+            'src/libethash/sha3.h',
+            'src/libethash/util.h'
             ],
-        extra_compile_args = ["-std=gnu99"])
+        extra_compile_args = ["-Isrc/", "-std=gnu99", "-Wall"])
  
 setup (
        name = 'pyethash',
        author = "Matthew Wampler-Doty",
        author_email = "matthew.wampler.doty@gmail.com",
        license = 'GPL',
-       version = '1.0',
+       version = '23',
+       url = 'https://github.com/ethereum/ethash',
+       download_url = 'https://github.com/ethereum/ethash/tarball/v23',
        description = 'Python wrappers for ethash, the ethereum proof of work hashing function',
-       ext_modules = [pyethash_core],
+       ext_modules = [pyethash],
       )

Godeps/_workspace/src/github.com/ethereum/ethash/src/benchmark/benchmark.cpp

@@ -31,7 +31,7 @@
 #include <algorithm>
 
 #ifdef WITH_CRYPTOPP
-#include <libethash/SHA3_cryptopp.h>
+#include <libethash/sha3_cryptopp.h>
 #include <string>
 
 #else

Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash-cl/CMakeLists.txt

@@ -2,14 +2,39 @@ set(LIBRARY ethash-cl)
 set(CMAKE_BUILD_TYPE Release)
 
 include(bin2h.cmake)
-bin2h(SOURCE_FILE ethash_cl_miner_kernel.cl VARIABLE_NAME ethash_cl_miner_kernel HEADER_FILE ${CMAKE_CURRENT_BINARY_DIR}/ethash_cl_miner_kernel.h)
+bin2h(SOURCE_FILE ethash_cl_miner_kernel.cl
+      VARIABLE_NAME ethash_cl_miner_kernel
+      HEADER_FILE ${CMAKE_CURRENT_BINARY_DIR}/ethash_cl_miner_kernel.h)
+
+if (NOT MSVC)
+	# Initialize CXXFLAGS for c++11
+    set(CMAKE_CXX_FLAGS                "-Wall -std=c++11")
+    set(CMAKE_CXX_FLAGS_DEBUG          "-O0 -g")
+    set(CMAKE_CXX_FLAGS_MINSIZEREL     "-Os -DNDEBUG")
+    set(CMAKE_CXX_FLAGS_RELEASE        "-O4 -DNDEBUG")
+    set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O2 -g")
+
+    # Compiler-specific C++11 activation.
+    if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
+        execute_process(
+            COMMAND ${CMAKE_CXX_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION)
+        if (NOT (GCC_VERSION VERSION_GREATER 4.7 OR GCC_VERSION VERSION_EQUAL 4.7))
+            message(FATAL_ERROR "${PROJECT_NAME} requires g++ 4.7 or greater.")
+        endif ()
+    elseif ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
+    else ()
+        message(FATAL_ERROR "Your C++ compiler does not support C++11.")
+    endif ()
+endif()
 
 if (NOT OpenCL_FOUND)
 	find_package(OpenCL)
 endif()
+
 if (OpenCL_FOUND)
 	include_directories(${OpenCL_INCLUDE_DIRS} ${CMAKE_CURRENT_BINARY_DIR})
 	include_directories(..)
-	add_library(${LIBRARY} ethash_cl_miner.cpp ethash_cl_miner.h)
+	add_library(${LIBRARY} ethash_cl_miner.cpp ethash_cl_miner.h cl.hpp)
 	TARGET_LINK_LIBRARIES(${LIBRARY} ${OpenCL_LIBRARIES} ethash)
 endif()

Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash-cl/bin2h.cmake

@@ -68,8 +68,7 @@ function(BIN2H)
     string(REGEX REPLACE ", $" "" arrayValues ${arrayValues})
 
     # converts the variable name into proper C identifier
-    # TODO: fix for legacy cmake
-    IF (${CMAKE_VERSION} GREATER 2.8.10)
+    IF (${CMAKE_VERSION} GREATER 2.8.10) # fix for legacy cmake
         string(MAKE_C_IDENTIFIER "${BIN2H_VARIABLE_NAME}" BIN2H_VARIABLE_NAME)
     ENDIF()
     string(TOUPPER "${BIN2H_VARIABLE_NAME}" BIN2H_VARIABLE_NAME)

Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash-cl/ethash_cl_miner.cpp

@@ -24,15 +24,22 @@
 
 #include <assert.h>
 #include <queue>
+#include <vector>
 #include "ethash_cl_miner.h"
 #include "ethash_cl_miner_kernel.h"
 #include <libethash/util.h>
 
+#define ETHASH_BYTES 32
+
+// workaround lame platforms
+#if !CL_VERSION_1_2
+#define CL_MAP_WRITE_INVALIDATE_REGION CL_MAP_WRITE
+#define CL_MEM_HOST_READ_ONLY 0
+#endif
+
 #undef min
 #undef max
 
-#define HASH_BYTES 32
-
 static void add_definition(std::string& source, char const* id, unsigned value)
 {
 	char buf[256];
@@ -41,6 +48,7 @@ static void add_definition(std::string& source, char const* id, unsigned value)
 }
 
 ethash_cl_miner::ethash_cl_miner()
+:	m_opencl_1_1()
 {
 }
 
@@ -71,11 +79,23 @@ bool ethash_cl_miner::init(ethash_params const& params, const uint8_t seed[32],
 	}
 
 	// use default device
-	cl::Device& device = devices[0];
-	debugf("Using device: %s\n", device.getInfo<CL_DEVICE_NAME>().c_str());
+	unsigned device_num = 0;
+	cl::Device& device = devices[device_num];
+	std::string device_version = device.getInfo<CL_DEVICE_VERSION>();
+	debugf("Using device: %s (%s)\n", device.getInfo<CL_DEVICE_NAME>().c_str(),device_version.c_str());
+
+	if (strncmp("OpenCL 1.0", device_version.c_str(), 10) == 0)
+	{
+		debugf("OpenCL 1.0 is not supported.\n");
+		return false;
+	}
+	if (strncmp("OpenCL 1.1", device_version.c_str(), 10) == 0)
+	{
+		m_opencl_1_1 = true;
+	}
 
 	// create context
-	m_context = cl::Context({device});
+	m_context = cl::Context(std::vector<cl::Device>(&device, &device+1));
 	m_queue = cl::CommandQueue(m_context, device);
 
 	// use requested workgroup size, but we require multiple of 8
@@ -120,7 +140,7 @@ bool ethash_cl_miner::init(ethash_params const& params, const uint8_t seed[32],
 		ethash_mkcache(&cache, &params, seed);
 
 		// if this throws then it's because we probably need to subdivide the dag uploads for compatibility
-		void* dag_ptr = m_queue.enqueueMapBuffer(m_dag, true, CL_MAP_WRITE_INVALIDATE_REGION, 0, params.full_size);
+		void* dag_ptr = m_queue.enqueueMapBuffer(m_dag, true, m_opencl_1_1 ? CL_MAP_WRITE : CL_MAP_WRITE_INVALIDATE_REGION, 0, params.full_size);
 		ethash_compute_full_data(dag_ptr, &params, &cache);
 		m_queue.enqueueUnmapMemObject(m_dag, dag_ptr);
 
@@ -130,7 +150,7 @@ bool ethash_cl_miner::init(ethash_params const& params, const uint8_t seed[32],
 	// create mining buffers
 	for (unsigned i = 0; i != c_num_buffers; ++i)
 	{
-		m_hash_buf[i] = cl::Buffer(m_context, CL_MEM_WRITE_ONLY | CL_MEM_HOST_READ_ONLY, 32*c_hash_batch_size);
+		m_hash_buf[i] = cl::Buffer(m_context, CL_MEM_WRITE_ONLY | (!m_opencl_1_1 ? CL_MEM_HOST_READ_ONLY : 0), 32*c_hash_batch_size);
 		m_search_buf[i] = cl::Buffer(m_context, CL_MEM_WRITE_ONLY, (c_max_search_results + 1) * sizeof(uint32_t));
 	}
 	return true;
@@ -176,7 +196,6 @@ void ethash_cl_miner::hash(uint8_t* ret, uint8_t const* header, uint64_t nonce,
 			m_hash_kernel.setArg(0, m_hash_buf[buf]);
 
 			// execute it!
-			clock_t start_time = clock();
 			m_queue.enqueueNDRangeKernel(
 				m_hash_kernel,
 				cl::NullRange,
@@ -196,8 +215,8 @@ void ethash_cl_miner::hash(uint8_t* ret, uint8_t const* header, uint64_t nonce,
 			pending_batch const& batch = pending.front();
 
 			// could use pinned host pointer instead, but this path isn't that important.
-			uint8_t* hashes = (uint8_t*)m_queue.enqueueMapBuffer(m_hash_buf[batch.buf], true, CL_MAP_READ, 0, batch.count * HASH_BYTES);
-			memcpy(ret + batch.base*HASH_BYTES, hashes, batch.count*HASH_BYTES);
+			uint8_t* hashes = (uint8_t*)m_queue.enqueueMapBuffer(m_hash_buf[batch.buf], true, CL_MAP_READ, 0, batch.count * ETHASH_BYTES);
+			memcpy(ret + batch.base*ETHASH_BYTES, hashes, batch.count*ETHASH_BYTES);
 			m_queue.enqueueUnmapMemObject(m_hash_buf[batch.buf], hashes);
 
 			pending.pop();
@@ -223,8 +242,19 @@ void ethash_cl_miner::search(uint8_t const* header, uint64_t target, search_hook
 	{
 		m_queue.enqueueWriteBuffer(m_search_buf[i], false, 0, 4, &c_zero);
 	}
+
+#if CL_VERSION_1_2
 	cl::Event pre_return_event;
+	if (!m_opencl_1_1)
+	{
 		m_queue.enqueueBarrierWithWaitList(NULL, &pre_return_event);
+	}
+	else
+#else
+	{
+		m_queue.finish();
+	}
+#endif
 
 	/*
 	__kernel void ethash_combined_search(
@@ -284,6 +314,11 @@ void ethash_cl_miner::search(uint8_t const* header, uint64_t target, search_hook
 	}
 
 	// not safe to return until this is ready
+#if CL_VERSION_1_2
+	if (!m_opencl_1_1)
+	{
 		pre_return_event.wait();
 	}
+#endif
+}
 

Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash-cl/ethash_cl_miner.h

@@ -40,4 +40,5 @@ private:
 	cl::Buffer m_hash_buf[c_num_buffers];
 	cl::Buffer m_search_buf[c_num_buffers];
 	unsigned m_workgroup_size;
+	bool m_opencl_1_1;
 };

Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/CMakeLists.txt

@@ -2,7 +2,6 @@ set(LIBRARY ethash)
 
 if (CPPETHEREUM)
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
-#else ()
 endif ()
 
 set(CMAKE_BUILD_TYPE Release)

Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/data_sizes.h

@@ -20,8 +20,6 @@
 * @date 2015
 */
 
-// TODO: Update this after ~3.5 years
-
 #pragma once
 
 #include <stdint.h>
@@ -33,23 +31,24 @@ extern "C" {
 
 #include <stdint.h>
 
-// 2048 Epochs worth of tabulated DAG sizes
+// 2048 Epochs (~20 years) worth of tabulated DAG sizes
 
 // Generated with the following Mathematica Code:
 
-// GetDataSizes[n_] := Module[{
-//        DataSetSizeBytesInit = 2^30,
-//        MixBytes = 128,
-//        DataSetGrowth = 2^23,
+// GetCacheSizes[n_] := Module[{
+//        CacheSizeBytesInit = 2^24,
+//        CacheGrowth = 2^17,
+//        HashBytes = 64,
 //        j = 0},
 //       Reap[
 //         While[j < n,
 //           Module[{i =
-//              Floor[(DataSetSizeBytesInit + DataSetGrowth * j) / MixBytes]},
+//             Floor[(CacheSizeBytesInit + CacheGrowth * j) / HashBytes]},
 //             While[! PrimeQ[i], i--];
-//              Sow[i*MixBytes]; j++]]]][[2]][[1]]
+//             Sow[i*HashBytes]; j++]]]][[2]][[1]]
+
 
-static const size_t dag_sizes[] = {
+static const size_t dag_sizes[2048] = {
         1073739904U, 1082130304U, 1090514816U, 1098906752U, 1107293056U,
         1115684224U, 1124070016U, 1132461952U, 1140849536U, 1149232768U,
         1157627776U, 1166013824U, 1174404736U, 1182786944U, 1191180416U,
@@ -478,300 +477,334 @@ static const size_t dag_sizes[] = {
 //         While[! PrimeQ[i], i--];
 //         Sow[i*HashBytes]; j++]]]][[2]][[1]]
 
-const size_t cache_sizes[] = {
-        1048384U, 1055552U, 1064512U, 1072832U, 1080896U, 1089344U, 1096768U,
-        1104448U, 1113664U, 1121216U, 1130176U, 1138624U, 1146304U, 1155008U,
-        1162816U, 1171264U, 1179328U, 1187392U, 1195456U, 1203392U, 1210816U,
-        1220416U, 1227712U, 1236416U, 1244608U, 1253312U, 1261376U, 1268416U,
-        1277632U, 1285696U, 1294016U, 1302208U, 1310656U, 1318336U, 1326784U,
-        1334848U, 1342912U, 1350848U, 1359808U, 1366208U, 1376192U, 1383488U,
-        1392448U, 1400384U, 1408832U, 1416512U, 1425344U, 1433408U, 1440704U,
-        1449664U, 1458112U, 1466048U, 1474496U, 1482688U, 1490752U, 1498688U,
-        1507136U, 1515328U, 1523264U, 1531456U, 1539904U, 1547584U, 1556288U,
-        1564352U, 1572544U, 1580608U, 1588544U, 1596992U, 1605568U, 1612096U,
-        1621952U, 1630144U, 1637696U, 1645888U, 1654336U, 1662784U, 1671104U,
-        1679168U, 1686848U, 1695296U, 1702208U, 1711168U, 1720256U, 1727552U,
-        1736128U, 1744576U, 1751488U, 1760576U, 1769408U, 1777472U, 1785664U,
-        1793984U, 1801664U, 1810112U, 1818304U, 1826624U, 1834816U, 1842752U,
-        1851328U, 1858112U, 1867456U, 1875904U, 1883968U, 1892288U, 1899712U,
-        1908416U, 1916608U, 1924544U, 1932992U, 1940672U, 1948736U, 1956928U,
-        1965632U, 1973824U, 1982144U, 1989824U, 1998784U, 2006848U, 2014784U,
-        2022848U, 2031424U, 2038976U, 2047424U, 2055616U, 2064064U, 2072384U,
-        2080448U, 2088512U, 2095936U, 2104768U, 2113472U, 2121664U, 2127808U,
-        2137792U, 2146112U, 2153408U, 2162624U, 2170304U, 2178496U, 2186944U,
-        2195392U, 2203456U, 2211136U, 2219968U, 2227648U, 2236096U, 2244416U,
-        2250944U, 2260928U, 2268736U, 2276672U, 2283328U, 2293696U, 2301632U,
-        2309312U, 2317888U, 2325952U, 2334656U, 2342848U, 2350144U, 2358848U,
-        2366656U, 2375488U, 2383552U, 2391616U, 2400064U, 2407616U, 2415808U,
-        2424256U, 2432704U, 2439616U, 2448704U, 2457152U, 2464064U, 2473792U,
-        2482112U, 2489792U, 2497472U, 2506432U, 2514752U, 2522816U, 2531264U,
-        2539456U, 2547136U, 2555456U, 2564032U, 2572096U, 2578496U, 2587712U,
-        2595776U, 2604736U, 2613056U, 2620736U, 2629184U, 2637632U, 2645824U,
-        2653888U, 2662208U, 2670016U, 2678464U, 2686912U, 2694464U, 2703296U,
-        2710976U, 2719424U, 2727104U, 2736064U, 2743232U, 2752192U, 2760512U,
-        2768704U, 2777024U, 2785088U, 2792512U, 2800576U, 2809024U, 2817856U,
-        2826176U, 2833984U, 2840896U, 2850752U, 2858048U, 2867008U, 2875328U,
-        2883392U, 2891584U, 2899648U, 2908096U, 2915648U, 2924224U, 2932672U,
-        2940736U, 2948672U, 2956736U, 2964928U, 2973248U, 2981824U, 2988992U,
-        2997184U, 3005248U, 3013952U, 3022144U, 3030592U, 3037376U, 3046976U,
-        3055552U, 3063616U, 3070784U, 3079744U, 3087808U, 3096512U, 3103808U,
-        3111872U, 3121088U, 3128896U, 3137216U, 3144896U, 3153856U, 3161152U,
-        3169984U, 3178432U, 3186496U, 3194816U, 3203008U, 3210176U, 3218624U,
-        3227072U, 3235264U, 3243712U, 3250496U, 3259456U, 3268544U, 3276736U,
-        3283648U, 3292736U, 3301184U, 3308224U, 3317696U, 3324736U, 3333184U,
-        3342272U, 3348544U, 3357248U, 3365312U, 3374912U, 3383104U, 3390784U,
-        3399488U, 3407296U, 3414976U, 3424192U, 3432256U, 3440576U, 3448768U,
-        3456832U, 3464896U, 3473216U, 3480128U, 3489344U, 3497408U, 3505856U,
-        3514048U, 3521344U, 3530432U, 3538624U, 3546304U, 3555008U, 3563072U,
-        3571648U, 3579712U, 3587392U, 3595456U, 3603904U, 3612352U, 3620416U,
-        3628864U, 3636928U, 3645248U, 3652928U, 3660992U, 3669184U, 3677888U,
-        3685952U, 3694528U, 3702592U, 3710528U, 3719104U, 3727168U, 3735488U,
-        3742784U, 3751232U, 3759424U, 3765184U, 3775808U, 3783872U, 3792832U,
-        3800768U, 3808832U, 3816256U, 3825344U, 3832768U, 3841856U, 3849536U,
-        3857344U, 3866432U, 3874496U, 3882304U, 3890752U, 3899072U, 3907264U,
-        3914816U, 3923008U, 3930688U, 3939904U, 3947968U, 3956416U, 3964736U,
-        3972544U, 3981248U, 3988928U, 3997376U, 4005824U, 4012864U, 4020928U,
-        4030144U, 4038592U, 4045504U, 4054592U, 4063168U, 4071104U, 4079552U,
-        4087232U, 4095808U, 4103872U, 4111168U, 4120384U, 4127936U, 4136512U,
-        4144832U, 4153024U, 4160704U, 4169408U, 4177216U, 4186048U, 4193344U,
-        4202048U, 4210496U, 4217536U, 4227008U, 4235072U, 4243264U, 4251584U,
-        4259392U, 4267712U, 4275776U, 4284352U, 4291904U, 4300096U, 4307648U,
-        4316992U, 4325056U, 4333376U, 4341056U, 4349888U, 4357568U, 4366016U,
-        4374464U, 4382528U, 4390208U, 4398656U, 4407232U, 4413632U, 4423616U,
-        4431808U, 4439744U, 4447936U, 4455872U, 4463296U, 4472128U, 4480576U,
-        4489024U, 4497344U, 4505152U, 4512448U, 4520896U, 4530112U, 4537664U,
-        4546496U, 4554688U, 4562752U, 4570816U, 4579264U, 4586944U, 4595648U,
-        4603712U, 4611392U, 4619072U, 4628032U, 4635584U, 4643776U, 4652864U,
-        4660672U, 4669376U, 4677056U, 4684096U, 4693184U, 4702144U, 4710208U,
-        4718528U, 4726336U, 4734272U, 4742464U, 4750784U, 4759232U, 4767296U,
-        4775872U, 4783808U, 4791872U, 4797376U, 4808512U, 4816192U, 4825024U,
-        4832704U, 4841024U, 4849472U, 4856512U, 4865984U, 4874176U, 4882112U,
-        4889792U, 4898752U, 4906688U, 4913984U, 4922816U, 4931008U, 4938944U,
-        4946624U, 4955584U, 4964032U, 4972096U, 4980032U, 4988864U, 4997056U,
-        5004992U, 5012288U, 5020096U, 5029312U, 5037632U, 5045696U, 5052224U,
-        5062592U, 5070784U, 5078848U, 5086784U, 5095232U, 5100736U, 5111488U,
-        5119936U, 5127104U, 5136064U, 5143616U, 5151424U, 5160256U, 5168704U,
-        5175232U, 5185472U, 5192384U, 5199296U, 5209664U, 5218112U, 5225536U,
-        5233472U, 5242816U, 5250496U, 5258944U, 5267264U, 5274944U, 5283776U,
-        5290048U, 5300032U, 5308096U, 5316544U, 5323328U, 5331904U, 5340736U,
-        5349056U, 5356864U, 5365312U, 5372096U, 5381696U, 5390272U, 5398336U,
-        5405888U, 5413696U, 5422784U, 5430976U, 5439424U, 5446976U, 5455808U,
-        5463616U, 5471168U, 5480128U, 5488064U, 5494592U, 5504704U, 5513152U,
-        5521216U, 5529536U, 5536576U, 5544256U, 5554112U, 5559616U, 5570368U,
-        5577664U, 5586752U, 5594944U, 5603008U, 5611456U, 5619392U, 5627584U,
-        5634368U, 5643328U, 5651264U, 5659328U, 5667008U, 5675584U, 5684416U,
-        5692864U, 5701568U, 5709632U, 5717056U, 5725376U, 5734336U, 5740096U,
-        5750336U, 5758912U, 5766848U, 5775296U, 5782976U, 5790784U, 5799616U,
-        5807936U, 5815232U, 5823808U, 5832256U, 5840192U, 5848768U, 5856832U,
-        5864896U, 5873344U, 5879872U, 5888576U, 5897792U, 5905216U, 5914432U,
-        5920448U, 5930944U, 5938624U, 5947328U, 5955392U, 5963456U, 5971648U,
-        5979328U, 5988032U, 5995712U, 6003904U, 6012736U, 6021056U, 6029248U,
-        6037184U, 6045632U, 6053312U, 6061376U, 6070208U, 6077504U, 6086464U,
-        6094784U, 6101696U, 6110912U, 6118592U, 6127168U, 6135616U, 6143296U,
-        6150208U, 6158912U, 6168128U, 6175808U, 6182464U, 6192832U, 6201152U,
-        6209344U, 6217664U, 6224576U, 6233408U, 6241472U, 6249664U, 6258496U,
-        6266816U, 6275008U, 6281152U, 6291136U, 6299456U, 6306752U, 6314816U,
-        6323776U, 6332096U, 6339392U, 6348224U, 6356288U, 6364096U, 6373184U,
-        6381376U, 6389696U, 6397504U, 6404416U, 6413632U, 6421952U, 6430016U,
-        6437824U, 6446912U, 6454592U, 6463168U, 6471616U, 6478144U, 6487232U,
-        6496192U, 6504128U, 6511936U, 6520256U, 6528832U, 6536896U, 6544576U,
-        6553408U, 6561472U, 6569792U, 6577216U, 6586304U, 6592448U, 6601024U,
-        6610624U, 6619072U, 6627136U, 6634816U, 6643264U, 6650816U, 6659776U,
-        6667712U, 6675904U, 6682688U, 6691904U, 6700864U, 6709184U, 6717376U,
-        6724544U, 6733504U, 6741824U, 6749888U, 6756032U, 6766528U, 6773056U,
-        6782912U, 6790976U, 6798016U, 6807488U, 6815168U, 6823744U, 6832064U,
-        6840128U, 6847552U, 6855872U, 6864064U, 6872128U, 6880576U, 6889408U,
-        6897472U, 6905792U, 6913472U, 6920896U, 6930368U, 6938432U, 6946624U,
-        6953536U, 6963136U, 6971072U, 6979136U, 6986944U, 6995392U, 7003712U,
-        7012288U, 7019072U, 7028416U, 7036352U, 7044416U, 7051712U, 7060672U,
-        7069376U, 7077568U, 7085504U, 7092544U, 7102016U, 7110592U, 7118656U,
-        7126208U, 7135168U, 7143104U, 7150912U, 7159744U, 7167808U, 7175744U,
-        7184192U, 7191232U, 7200448U, 7207744U, 7216576U, 7224128U, 7233472U,
-        7241536U, 7249856U, 7256512U, 7264832U, 7274048U, 7282112U, 7290176U,
-        7298752U, 7306688U, 7315136U, 7322816U, 7331392U, 7339456U, 7347776U,
-        7356224U, 7364288U, 7371712U, 7380928U, 7387456U, 7396544U, 7404352U,
-        7413568U, 7421632U, 7429696U, 7436864U, 7446464U, 7454144U, 7461952U,
-        7470784U, 7478336U, 7487296U, 7495616U, 7503424U, 7511872U, 7520192U,
-        7527616U, 7536448U, 7544512U, 7551424U, 7560128U, 7568576U, 7577536U,
-        7583552U, 7592512U, 7600448U, 7610048U, 7618496U, 7626176U, 7634752U,
-        7642816U, 7651264U, 7659328U, 7667008U, 7675456U, 7683136U, 7691584U,
-        7700416U, 7707584U, 7716416U, 7724224U, 7733056U, 7740608U, 7749184U,
-        7756096U, 7765952U, 7774016U, 7781824U, 7790528U, 7798592U, 7805888U,
-        7814336U, 7822784U, 7831232U, 7839296U, 7847104U, 7855552U, 7863616U,
-        7872448U, 7880128U, 7888576U, 7896256U, 7905088U, 7912768U, 7920448U,
-        7928768U, 7937344U, 7945792U, 7953728U, 7959488U, 7970752U, 7978816U,
-        7987136U, 7994816U, 8003392U, 8011712U, 8019904U, 8027456U, 8035264U,
-        8044352U, 8052544U, 8060224U, 8069056U, 8076736U, 8084672U, 8093504U,
-        8101312U, 8110016U, 8117696U, 8125888U, 8134592U, 8142016U, 8149952U,
-        8159168U, 8166976U, 8175296U, 8183488U, 8191808U, 8199616U, 8207296U,
-        8216128U, 8224576U, 8232256U, 8241088U, 8248256U, 8257472U, 8264128U,
-        8273728U, 8281792U, 8290112U, 8297152U, 8305216U, 8314816U, 8322752U,
-        8330944U, 8339392U, 8347072U, 8355392U, 8363968U, 8371904U, 8379328U,
-        8388544U, 8394944U, 8404544U, 8412736U, 8421184U, 8429504U, 8437696U,
-        8445376U, 8452544U, 8460736U, 8470208U, 8478016U, 8486848U, 8494144U,
-        8503232U, 8511296U, 8519488U, 8527424U, 8534464U, 8543936U, 8552384U,
-        8558912U, 8568128U, 8575936U, 8584256U, 8593216U, 8601536U, 8608832U,
-        8616896U, 8625728U, 8634176U, 8641856U, 8649664U, 8658112U, 8666176U,
-        8674112U, 8682944U, 8691136U, 8699456U, 8707648U, 8716096U, 8724416U,
-        8732608U, 8740672U, 8748352U, 8756032U, 8764864U, 8773568U, 8781376U,
-        8789824U, 8796992U, 8806208U, 8814272U, 8822336U, 8830912U, 8838848U,
-        8847296U, 8854336U, 8863552U, 8871488U, 8879296U, 8887616U, 8894528U,
-        8904512U, 8911424U, 8920768U, 8928704U, 8936128U, 8944576U, 8953664U,
-        8960576U, 8970176U, 8977984U, 8986304U, 8994112U, 9002432U, 9011008U,
-        9018176U, 9026624U, 9035584U, 9043904U, 9052096U, 9059264U, 9068096U,
-        9075904U, 9084224U, 9092288U, 9100352U, 9108928U, 9116992U, 9125824U,
-        9133504U, 9141824U, 9150272U, 9157952U, 9164608U, 9174848U, 9182912U,
-        9190976U, 9199552U, 9205312U, 9215936U, 9222592U, 9232192U, 9240512U,
-        9248704U, 9256256U, 9264832U, 9272896U, 9281344U, 9288896U, 9297088U,
-        9305536U, 9313984U, 9322304U, 9329728U, 9337792U, 9346112U, 9355072U,
-        9363136U, 9371072U, 9378752U, 9387712U, 9395648U, 9404224U, 9411008U,
-        9420608U, 9428416U, 9436864U, 9445312U, 9453376U, 9460928U, 9468736U,
-        9477824U, 9485248U, 9493696U, 9502144U, 9509056U, 9518528U, 9527104U,
-        9535424U, 9543616U, 9551296U, 9559744U, 9568192U, 9576256U, 9584576U,
-        9591872U, 9600704U, 9608384U, 9615808U, 9624512U, 9633472U, 9641536U,
-        9649856U, 9658048U, 9665728U, 9674432U, 9682496U, 9691072U, 9699136U,
-        9707072U, 9715136U, 9722176U, 9732032U, 9740096U, 9747904U, 9756352U,
-        9764288U, 9771584U, 9780544U, 9789376U, 9796928U, 9804224U, 9813952U,
-        9822016U, 9829696U, 9838016U, 9845824U, 9852992U, 9863104U, 9870656U,
-        9878464U, 9887552U, 9895744U, 9903808U, 9912128U, 9920192U, 9927616U,
-        9936064U, 9944768U, 9952576U, 9960128U, 9969472U, 9977152U, 9985216U,
-        9994048U, 10001216U, 10007744U, 10018496U, 10026944U, 10035136U, 10042432U,
-        10051264U, 10059584U, 10067648U, 10075712U, 10083904U, 10091456U, 10100672U,
-        10108864U, 10116928U, 10124864U, 10133056U, 10140736U, 10149824U, 10156736U,
-        10165952U, 10173376U, 10182208U, 10190528U, 10198336U, 10206272U, 10213696U,
-        10223296U, 10231744U, 10238656U, 10247488U, 10256192U, 10263872U, 10272448U,
-        10280896U, 10288448U, 10296512U, 10305088U, 10313536U, 10321088U, 10330048U,
-        10337984U, 10346176U, 10354112U, 10362304U, 10369088U, 10377152U, 10386752U,
-        10394816U, 10403648U, 10411712U, 10418624U, 10427968U, 10436032U, 10444736U,
-        10452928U, 10459712U, 10468672U, 10476608U, 10484416U, 10491328U, 10501952U,
-        10509376U, 10517824U, 10526528U, 10534336U, 10542656U, 10549696U, 10559168U,
-        10566592U, 10575808U, 10583488U, 10590656U, 10599488U, 10607936U, 10616768U,
-        10624832U, 10630336U, 10640576U, 10649536U, 10655168U, 10665152U, 10674112U,
-        10682176U, 10690496U, 10698176U, 10705216U, 10715072U, 10722752U, 10731328U,
-        10739264U, 10746688U, 10754752U, 10761664U, 10770752U, 10779712U, 10787776U,
-        10796608U, 10803392U, 10812352U, 10821056U, 10828736U, 10837952U, 10846144U,
-        10853824U, 10861376U, 10869952U, 10877248U, 10887104U, 10895296U, 10903232U,
-        10910912U, 10918976U, 10927936U, 10935872U, 10944448U, 10952384U, 10960832U,
-        10968512U, 10977088U, 10985024U, 10992832U, 11000896U, 11009984U, 11018048U,
-        11026112U, 11034304U, 11042624U, 11050432U, 11058368U, 11064512U, 11075392U,
-        11083712U, 11091776U, 11099584U, 11107904U, 11115968U, 11124416U, 11131712U,
-        11141056U, 11148608U, 11157184U, 11165248U, 11173312U, 11180992U, 11189056U,
-        11197376U, 11206592U, 11214656U, 11222336U, 11230784U, 11238464U, 11246528U,
-        11254976U, 11263552U, 11271872U, 11279552U, 11288512U, 11296576U, 11304256U,
-        11312192U, 11320768U, 11329216U, 11336384U, 11345216U, 11352512U, 11362112U,
-        11369408U, 11378624U, 11386688U, 11394496U, 11402816U, 11411264U, 11418688U,
-        11427776U, 11435584U, 11444032U, 11452096U, 11459648U, 11467072U, 11476928U,
-        11484992U, 11493184U, 11500352U, 11509312U, 11517248U, 11524928U, 11534144U,
-        11542208U, 11550272U, 11556416U, 11566784U, 11574208U, 11581376U, 11589568U,
-        11599552U, 11607104U, 11616064U, 11623616U, 11632576U, 11639872U, 11648704U,
-        11657024U, 11664704U, 11672896U, 11681216U, 11689792U, 11697856U, 11705536U,
-        11714368U, 11722688U, 11730496U, 11737408U, 11745728U, 11754304U, 11763008U,
-        11770816U, 11779648U, 11788096U, 11795776U, 11804608U, 11812544U, 11820992U,
-        11829184U, 11837248U, 11844928U, 11852096U, 11860928U, 11869888U, 11878336U,
-        11886272U, 11894336U, 11902144U, 11910848U, 11919296U, 11925952U, 11934784U,
-        11943616U, 11951552U, 11960128U, 11968192U, 11976512U, 11983168U, 11992768U,
-        12000832U, 12008896U, 12016832U, 12025408U, 12033856U, 12042176U, 12049984U,
-        12058048U, 12066112U, 12073792U, 12082624U, 12091328U, 12098752U, 12106816U,
-        12115904U, 12124096U, 12131776U, 12140224U, 12148672U, 12156736U, 12164032U,
-        12173248U, 12181184U, 12186176U, 12197824U, 12205888U, 12213952U, 12218944U,
-        12230336U, 12238784U, 12246592U, 12254272U, 12262336U, 12269888U, 12279104U,
-        12287936U, 12295744U, 12304064U, 12312512U, 12319936U, 12328768U, 12337088U,
-        12344896U, 12352832U, 12361408U, 12368704U, 12377152U, 12384832U, 12394432U,
-        12402496U, 12409024U, 12417728U, 12426688U, 12433216U, 12443584U, 12450752U,
-        12459968U, 12468032U, 12475712U, 12484544U, 12492608U, 12500416U, 12508352U,
-        12517184U, 12525376U, 12532288U, 12541888U, 12549568U, 12556864U, 12565568U,
-        12574528U, 12582208U, 12590528U, 12598592U, 12607424U, 12615488U, 12623552U,
-        12631744U, 12638656U, 12647744U, 12656576U, 12664768U, 12672832U, 12680896U,
-        12688576U, 12697408U, 12704192U, 12713408U, 12721216U, 12729664U, 12738496U,
-        12745792U, 12754496U, 12762688U, 12769472U, 12779456U, 12787648U, 12795712U,
-        12804032U, 12812224U, 12819008U, 12828352U, 12836672U, 12844736U, 12851648U,
-        12859456U, 12868672U, 12877504U, 12885568U, 12892864U, 12902336U, 12909376U,
-        12918208U, 12926656U, 12934976U, 12942784U, 12951104U, 12959552U, 12967744U,
-        12976064U, 12984256U, 12991936U, 12999488U, 13007936U, 13016768U, 13021504U,
-        13033024U, 13041472U, 13049408U, 13057472U, 13065664U, 13072064U, 13081408U,
-        13089344U, 13098688U, 13107008U, 13115072U, 13122752U, 13130944U, 13139648U,
-        13147712U, 13155776U, 13162432U, 13172672U, 13180864U, 13188928U, 13196992U,
-        13203392U, 13213504U, 13219264U, 13228736U, 13236928U, 13244992U, 13253056U,
-        13262528U, 13269952U, 13278784U, 13285952U, 13295552U, 13303616U, 13311808U,
-        13319744U, 13328192U, 13336256U, 13344704U, 13352384U, 13360576U, 13369024U,
-        13377344U, 13385408U, 13393216U, 13401664U, 13410112U, 13418176U, 13426496U,
-        13434688U, 13442368U, 13451072U, 13459136U, 13466944U, 13475648U, 13482944U,
-        13491904U, 13500352U, 13508288U, 13516736U, 13524416U, 13532224U, 13541312U,
-        13549504U, 13556288U, 13564736U, 13573184U, 13581376U, 13587008U, 13598656U,
-        13605952U, 13612864U, 13622464U, 13631168U, 13639616U, 13647808U, 13655104U,
-        13663424U, 13671872U, 13680064U, 13688768U, 13696576U, 13705024U, 13712576U,
-        13721536U, 13729216U, 13737664U, 13746112U, 13753024U, 13759552U, 13770304U,
-        13777856U, 13786688U, 13793984U, 13802176U, 13811264U, 13819328U, 13827904U,
-        13835456U, 13844416U, 13851584U, 13860544U, 13868992U, 13877056U, 13884608U,
-        13893184U, 13901248U, 13909696U, 13917632U, 13925056U, 13934528U, 13942336U,
-        13950784U, 13959104U, 13966912U, 13975232U, 13982656U, 13991872U, 13999936U,
-        14007872U, 14016064U, 14024512U, 14032064U, 14040896U, 14049088U, 14057408U,
-        14065088U, 14072896U, 14081344U, 14089664U, 14097856U, 14106304U, 14114752U,
-        14122688U, 14130752U, 14138816U, 14147008U, 14155072U, 14163904U, 14170432U,
-        14180288U, 14187328U, 14196032U, 14204864U, 14212672U, 14220736U, 14229056U,
-        14237504U, 14245568U, 14253632U, 14261824U, 14269888U, 14278592U, 14286656U,
-        14293696U, 14302784U, 14309696U, 14317504U, 14326336U, 14335936U, 14343232U,
-        14352064U, 14359232U, 14368064U, 14376512U, 14384576U, 14393024U, 14401472U,
-        14409536U, 14416832U, 14424512U, 14433856U, 14440768U, 14449984U, 14458816U,
-        14465728U, 14474816U, 14482112U, 14491328U, 14499392U, 14506816U, 14516032U,
-        14524352U, 14531392U, 14540224U, 14547392U, 14556992U, 14565184U, 14573248U,
-        14580928U, 14588864U, 14596928U, 14606272U, 14613824U, 14622656U, 14630464U,
-        14638912U, 14646976U, 14655296U, 14661952U, 14671808U, 14679872U, 14687936U,
-        14696384U, 14704576U, 14710336U, 14720192U, 14729152U, 14736448U, 14745152U,
-        14752448U, 14761792U, 14769856U, 14777024U, 14785984U, 14792384U, 14802752U,
-        14810816U, 14819264U, 14827328U, 14835136U, 14843072U, 14851264U, 14860096U,
-        14867648U, 14876096U, 14884544U, 14892736U, 14900672U, 14907968U, 14917312U,
-        14924864U, 14933824U, 14939968U, 14950336U, 14957632U, 14966464U, 14974912U,
-        14982592U, 14991296U, 14999104U, 15006272U, 15015232U, 15023936U, 15031616U,
-        15040448U, 15047488U, 15055552U, 15063616U, 15073216U, 15079744U, 15088064U,
-        15097664U, 15105344U, 15113792U, 15122368U, 15130048U, 15137728U, 15146176U,
-        15154112U, 15162688U, 15171392U, 15179456U, 15187264U, 15194176U, 15204032U,
-        15212224U, 15220544U, 15227456U, 15237056U, 15245248U, 15253184U, 15261632U,
-        15269824U, 15277376U, 15285824U, 15293888U, 15301568U, 15310784U, 15318848U,
-        15325504U, 15335104U, 15343168U, 15350848U, 15359936U, 15367232U, 15373376U,
-        15384256U, 15392576U, 15400384U, 15408832U, 15417152U, 15424832U, 15433024U,
-        15441344U, 15449152U, 15457088U, 15466432U, 15474112U, 15482816U, 15488576U,
-        15499072U, 15505856U, 15514816U, 15523264U, 15531584U, 15540032U, 15547328U,
-        15553984U, 15564608U, 15571904U, 15579968U, 15589312U, 15597376U, 15605696U,
-        15612992U, 15621824U, 15630016U, 15638464U, 15646144U, 15654592U, 15662912U,
-        15671104U, 15677248U, 15686848U, 15693376U, 15701696U, 15712064U, 15720256U,
-        15728576U, 15736384U, 15744704U, 15752512U, 15761344U, 15769024U, 15777728U,
-        15785152U, 15793984U, 15802048U, 15809984U, 15817024U, 15825856U, 15834944U,
-        15843008U, 15849664U, 15859136U, 15866432U, 15876032U, 15884096U, 15892288U,
-        15900608U, 15908416U, 15916864U, 15924928U, 15930176U, 15941056U, 15949504U,
-        15957824U, 15965632U, 15973952U, 15982528U, 15990592U, 15998272U, 16006976U,
-        16012736U, 16023104U, 16031296U, 16039616U, 16048064U, 16055744U, 16064192U,
-        16071488U, 16080832U, 16088768U, 16097216U, 16104896U, 16112704U, 16121792U,
-        16129856U, 16138048U, 16146112U, 16154176U, 16162624U, 16170688U, 16177856U,
-        16186816U, 16195136U, 16202176U, 16211648U, 16220096U, 16228288U, 16235584U,
-        16244672U, 16252864U, 16260544U, 16269248U, 16277056U, 16285504U, 16291648U,
-        16301632U, 16309312U, 16318144U, 16326208U, 16333888U, 16342336U, 16351168U,
-        16359232U, 16367552U, 16375616U, 16383296U, 16391744U, 16398016U, 16407616U,
-        16415936U, 16424896U, 16432448U, 16440896U, 16449088U, 16457024U, 16465472U,
-        16474048U, 16481216U, 16490048U, 16498624U, 16505792U, 16513984U, 16523072U,
-        16531136U, 16538944U, 16547264U, 16555328U, 16563776U, 16570816U, 16578112U,
-        16587712U, 16596544U, 16604992U, 16613312U, 16620608U, 16629568U, 16637888U,
-        16645696U, 16653632U, 16661696U, 16669888U, 16677568U, 16686272U, 16695232U,
-        16703168U, 16710464U, 16719424U, 16726592U, 16733888U, 16744384U, 16752448U,
-        16760768U, 16768448U, 16776896U, 16785344U, 16793536U, 16801216U, 16809664U,
-        16818112U, 16826176U, 16833472U, 16842688U, 16850752U, 16859072U, 16866368U,
-        16875328U, 16883392U, 16891712U, 16899776U, 16907456U, 16915264U, 16924352U,
-        16931776U, 16940608U, 16949056U, 16957376U, 16965056U, 16973248U, 16981696U,
-        16990144U, 16997056U, 17005888U, 17014208U, 17021504U, 17031104U, 17039296U,
-        17046976U, 17055424U, 17062592U, 17070016U, 17079488U, 17087936U, 17096512U,
-        17104576U, 17113024U, 17121088U, 17129408U, 17136832U, 17145664U, 17152832U,
-        17161792U, 17170112U, 17177792U, 17186368U, 17194304U, 17202496U, 17211328U,
-        17218624U, 17227712U, 17233984U, 17243584U, 17251904U, 17259712U, 17266624U,
-        17276608U, 17284672U, 17292224U, 17301056U, 17309632U, 17317568U, 17326016U,
-        17333824U, 17342272U, 17350208U, 17358784U, 17366848U, 17374912U, 17382592U,
-        17390656U, 17399488U, 17406784U, 17413952U, 17423936U, 17432512U, 17440448U,
-        17447744U, 17456704U, 17464768U, 17472064U, 17481536U, 17489344U, 17495488U,
-        17505728U, 17513792U, 17522368U, 17530816U, 17538112U, 17546944U, 17555264U,
-        17563072U, 17569856U, 17579456U, 17587904U, 17596352U, 17603776U, 17611712U,
-        17620672U, 17628992U, 17637184U, 17645504U, 17653568U, 17661632U, 17669824U,
-        17677376U, 17686208U, 17693888U, 17702336U, 17710144U, 17718208U, 17726528U,
-        17734336U, 17743808U, 17751872U, 17759936U, 17766592U, 17776448U, 17784512U,
-        17791936U, 17801152U, 17809216U, 17817152U
+const size_t cache_sizes[2048] = {
+        16776896U, 16907456U, 17039296U, 17170112U, 17301056U, 17432512U, 17563072U,
+        17693888U, 17824192U, 17955904U, 18087488U, 18218176U, 18349504U, 18481088U,
+        18611392U, 18742336U, 18874304U, 19004224U, 19135936U, 19267264U, 19398208U,
+        19529408U, 19660096U, 19791424U, 19922752U, 20053952U, 20184896U, 20315968U,
+        20446912U, 20576576U, 20709184U, 20840384U, 20971072U, 21102272U, 21233216U,
+        21364544U, 21494848U, 21626816U, 21757376U, 21887552U, 22019392U, 22151104U,
+        22281536U, 22412224U, 22543936U, 22675264U, 22806464U, 22935872U, 23068096U,
+        23198272U, 23330752U, 23459008U, 23592512U, 23723968U, 23854912U, 23986112U,
+        24116672U, 24247616U, 24378688U, 24509504U, 24640832U, 24772544U, 24903488U,
+        25034432U, 25165376U, 25296704U, 25427392U, 25558592U, 25690048U, 25820096U,
+        25951936U, 26081728U, 26214208U, 26345024U, 26476096U, 26606656U, 26737472U,
+        26869184U, 26998208U, 27131584U, 27262528U, 27393728U, 27523904U, 27655744U,
+        27786688U, 27917888U, 28049344U, 28179904U, 28311488U, 28441792U, 28573504U,
+        28700864U, 28835648U, 28966208U, 29096768U, 29228608U, 29359808U, 29490752U,
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+        197656384U, 197787584U, 197916608U, 198049472U, 198180544U, 198310208U,
+        198442432U, 198573632U, 198705088U, 198834368U, 198967232U, 199097792U,
+        199228352U, 199360192U, 199491392U, 199621696U, 199751744U, 199883968U,
+        200014016U, 200146624U, 200276672U, 200408128U, 200540096U, 200671168U,
+        200801984U, 200933312U, 201062464U, 201194944U, 201326144U, 201457472U,
+        201588544U, 201719744U, 201850816U, 201981632U, 202111552U, 202244032U,
+        202374464U, 202505152U, 202636352U, 202767808U, 202898368U, 203030336U,
+        203159872U, 203292608U, 203423296U, 203553472U, 203685824U, 203816896U,
+        203947712U, 204078272U, 204208192U, 204341056U, 204472256U, 204603328U,
+        204733888U, 204864448U, 204996544U, 205125568U, 205258304U, 205388864U,
+        205517632U, 205650112U, 205782208U, 205913536U, 206044736U, 206176192U,
+        206307008U, 206434496U, 206569024U, 206700224U, 206831168U, 206961856U,
+        207093056U, 207223616U, 207355328U, 207486784U, 207616832U, 207749056U,
+        207879104U, 208010048U, 208141888U, 208273216U, 208404032U, 208534336U,
+        208666048U, 208796864U, 208927424U, 209059264U, 209189824U, 209321792U,
+        209451584U, 209582656U, 209715136U, 209845568U, 209976896U, 210106432U,
+        210239296U, 210370112U, 210501568U, 210630976U, 210763712U, 210894272U,
+        211024832U, 211156672U, 211287616U, 211418176U, 211549376U, 211679296U,
+        211812032U, 211942592U, 212074432U, 212204864U, 212334016U, 212467648U,
+        212597824U, 212727616U, 212860352U, 212991424U, 213120832U, 213253952U,
+        213385024U, 213515584U, 213645632U, 213777728U, 213909184U, 214040128U,
+        214170688U, 214302656U, 214433728U, 214564544U, 214695232U, 214826048U,
+        214956992U, 215089088U, 215219776U, 215350592U, 215482304U, 215613248U,
+        215743552U, 215874752U, 216005312U, 216137024U, 216267328U, 216399296U,
+        216530752U, 216661696U, 216790592U, 216923968U, 217054528U, 217183168U,
+        217316672U, 217448128U, 217579072U, 217709504U, 217838912U, 217972672U,
+        218102848U, 218233024U, 218364736U, 218496832U, 218627776U, 218759104U,
+        218888896U, 219021248U, 219151936U, 219281728U, 219413056U, 219545024U,
+        219675968U, 219807296U, 219938624U, 220069312U, 220200128U, 220331456U,
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+        230684864U, 230816704U, 230948416U, 231079616U, 231210944U, 231342016U,
+        231472448U, 231603776U, 231733952U, 231866176U, 231996736U, 232127296U,
+        232259392U, 232388672U, 232521664U, 232652608U, 232782272U, 232914496U,
+        233043904U, 233175616U, 233306816U, 233438528U, 233569984U, 233699776U,
+        233830592U, 233962688U, 234092224U, 234221888U, 234353984U, 234485312U,
+        234618304U, 234749888U, 234880832U, 235011776U, 235142464U, 235274048U,
+        235403456U, 235535936U, 235667392U, 235797568U, 235928768U, 236057152U,
+        236190272U, 236322752U, 236453312U, 236583616U, 236715712U, 236846528U,
+        236976448U, 237108544U, 237239104U, 237371072U, 237501632U, 237630784U,
+        237764416U, 237895232U, 238026688U, 238157632U, 238286912U, 238419392U,
+        238548032U, 238681024U, 238812608U, 238941632U, 239075008U, 239206336U,
+        239335232U, 239466944U, 239599168U, 239730496U, 239861312U, 239992384U,
+        240122816U, 240254656U, 240385856U, 240516928U, 240647872U, 240779072U,
+        240909632U, 241040704U, 241171904U, 241302848U, 241433408U, 241565248U,
+        241696192U, 241825984U, 241958848U, 242088256U, 242220224U, 242352064U,
+        242481856U, 242611648U, 242744896U, 242876224U, 243005632U, 243138496U,
+        243268672U, 243400384U, 243531712U, 243662656U, 243793856U, 243924544U,
+        244054592U, 244187072U, 244316608U, 244448704U, 244580032U, 244710976U,
+        244841536U, 244972864U, 245104448U, 245233984U, 245365312U, 245497792U,
+        245628736U, 245759936U, 245889856U, 246021056U, 246152512U, 246284224U,
+        246415168U, 246545344U, 246675904U, 246808384U, 246939584U, 247070144U,
+        247199552U, 247331648U, 247463872U, 247593536U, 247726016U, 247857088U,
+        247987648U, 248116928U, 248249536U, 248380736U, 248512064U, 248643008U,
+        248773312U, 248901056U, 249036608U, 249167552U, 249298624U, 249429184U,
+        249560512U, 249692096U, 249822784U, 249954112U, 250085312U, 250215488U,
+        250345792U, 250478528U, 250608704U, 250739264U, 250870976U, 251002816U,
+        251133632U, 251263552U, 251395136U, 251523904U, 251657792U, 251789248U,
+        251919424U, 252051392U, 252182464U, 252313408U, 252444224U, 252575552U,
+        252706624U, 252836032U, 252968512U, 253099712U, 253227584U, 253361728U,
+        253493056U, 253623488U, 253754432U, 253885504U, 254017216U, 254148032U,
+        254279488U, 254410432U, 254541376U, 254672576U, 254803264U, 254933824U,
+        255065792U, 255196736U, 255326528U, 255458752U, 255589952U, 255721408U,
+        255851072U, 255983296U, 256114624U, 256244416U, 256374208U, 256507712U,
+        256636096U, 256768832U, 256900544U, 257031616U, 257162176U, 257294272U,
+        257424448U, 257555776U, 257686976U, 257818432U, 257949632U, 258079552U,
+        258211136U, 258342464U, 258473408U, 258603712U, 258734656U, 258867008U,
+        258996544U, 259127744U, 259260224U, 259391296U, 259522112U, 259651904U,
+        259784384U, 259915328U, 260045888U, 260175424U, 260308544U, 260438336U,
+        260570944U, 260700992U, 260832448U, 260963776U, 261092672U, 261226304U,
+        261356864U, 261487936U, 261619648U, 261750592U, 261879872U, 262011968U,
+        262143424U, 262274752U, 262404416U, 262537024U, 262667968U, 262799296U,
+        262928704U, 263061184U, 263191744U, 263322944U, 263454656U, 263585216U,
+        263716672U, 263847872U, 263978944U, 264108608U, 264241088U, 264371648U,
+        264501184U, 264632768U, 264764096U, 264895936U, 265024576U, 265158464U,
+        265287488U, 265418432U, 265550528U, 265681216U, 265813312U, 265943488U,
+        266075968U, 266206144U, 266337728U, 266468032U, 266600384U, 266731072U,
+        266862272U, 266993344U, 267124288U, 267255616U, 267386432U, 267516992U,
+        267648704U, 267777728U, 267910592U, 268040512U, 268172096U, 268302784U,
+        268435264U, 268566208U, 268696256U, 268828096U, 268959296U, 269090368U,
+        269221312U, 269352256U, 269482688U, 269614784U, 269745856U, 269876416U,
+        270007616U, 270139328U, 270270272U, 270401216U, 270531904U, 270663616U,
+        270791744U, 270924736U, 271056832U, 271186112U, 271317184U, 271449536U,
+        271580992U, 271711936U, 271843136U, 271973056U, 272105408U, 272236352U,
+        272367296U, 272498368U, 272629568U, 272759488U, 272891456U, 273022784U,
+        273153856U, 273284672U, 273415616U, 273547072U, 273677632U, 273808448U,
+        273937088U, 274071488U, 274200896U, 274332992U, 274463296U, 274595392U,
+        274726208U, 274857536U, 274988992U, 275118656U, 275250496U, 275382208U,
+        275513024U, 275643968U, 275775296U, 275906368U, 276037184U, 276167872U,
+        276297664U, 276429376U, 276560576U, 276692672U, 276822976U, 276955072U,
+        277085632U, 277216832U, 277347008U, 277478848U, 277609664U, 277740992U,
+        277868608U, 278002624U, 278134336U, 278265536U, 278395328U, 278526784U,
+        278657728U, 278789824U, 278921152U, 279052096U, 279182912U, 279313088U,
+        279443776U, 279576256U, 279706048U, 279838528U, 279969728U, 280099648U,
+        280230976U, 280361408U, 280493632U, 280622528U, 280755392U, 280887104U,
+        281018176U, 281147968U, 281278912U, 281411392U, 281542592U, 281673152U,
+        281803712U, 281935552U, 282066496U, 282197312U, 282329024U, 282458816U,
+        282590272U, 282720832U, 282853184U, 282983744U, 283115072U, 283246144U,
+        283377344U, 283508416U, 283639744U, 283770304U, 283901504U, 284032576U,
+        284163136U, 284294848U, 284426176U, 284556992U, 284687296U, 284819264U,
+        284950208U, 285081536U
 };
 
 #ifdef __cplusplus

Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/ethash.h

@@ -1,18 +1,18 @@
 /*
-  This file is part of cpp-ethereum.
+  This file is part of ethash.
 
-  cpp-ethereum is free software: you can redistribute it and/or modify
+  ethash is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
 
-  cpp-ethereum is distributed in the hope that it will be useful,
+  ethash is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License
-  along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+  along with ethash.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 /** @file ethash.h
@@ -26,13 +26,15 @@
 #include <stddef.h>
 #include "compiler.h"
 
-#define REVISION 20
-#define DAGSIZE_BYTES_INIT 1073741824U // 2**30
-#define DAG_GROWTH 8388608U            // 2**23
-#define CACHE_MULTIPLIER 1024
+#define REVISION 23
+#define DATASET_BYTES_INIT 1073741824U // 2**30
+#define DATASET_BYTES_GROWTH 8388608U  // 2**23
+#define CACHE_BYTES_INIT 1073741824U // 2**24
+#define CACHE_BYTES_GROWTH 131072U  // 2**17
 #define EPOCH_LENGTH 30000U
 #define MIX_BYTES 128
-#define DAG_PARENTS 256
+#define HASH_BYTES 64
+#define DATASET_PARENTS 256
 #define CACHE_ROUNDS 3
 #define ACCESSES 64
 
@@ -67,12 +69,31 @@ void ethash_mkcache(ethash_cache *cache, ethash_params const *params, const uint
 void ethash_compute_full_data(void *mem, ethash_params const *params, ethash_cache const *cache);
 void ethash_full(ethash_return_value *ret, void const *full_mem, ethash_params const *params, const uint8_t header_hash[32], const uint64_t nonce);
 void ethash_light(ethash_return_value *ret, ethash_cache const *cache, ethash_params const *params, const uint8_t header_hash[32], const uint64_t nonce);
+void ethash_get_seedhash(uint8_t seedhash[32], const uint32_t block_number);
 
-static inline void ethash_prep_light(void *cache, ethash_params const *params, const uint8_t seed[32]) { ethash_cache c; c.mem = cache; ethash_mkcache(&c, params, seed); }
-static inline void ethash_compute_light(ethash_return_value *ret, void const *cache, ethash_params const *params, const uint8_t header_hash[32], const uint64_t nonce) { ethash_cache c; c.mem = (void*)cache; ethash_light(ret, &c, params, header_hash, nonce); }
-static inline void ethash_prep_full(void *full, ethash_params const *params, void const *cache) { ethash_cache c; c.mem = (void*)cache; ethash_compute_full_data(full, params, &c); }
-static inline void ethash_compute_full(ethash_return_value *ret, void const *full, ethash_params const *params, const uint8_t header_hash[32], const uint64_t nonce) { ethash_full(ret, full, params, header_hash, nonce); }
+static inline void ethash_prep_light(void *cache, ethash_params const *params, const uint8_t seed[32]) {
+    ethash_cache c;
+    c.mem = cache;
+    ethash_mkcache(&c, params, seed);
+}
+
+static inline void ethash_compute_light(ethash_return_value *ret, void const *cache, ethash_params const *params, const uint8_t header_hash[32], const uint64_t nonce) {
+    ethash_cache c;
+    c.mem = (void *) cache;
+    ethash_light(ret, &c, params, header_hash, nonce);
+}
+
+static inline void ethash_prep_full(void *full, ethash_params const *params, void const *cache) {
+    ethash_cache c;
+    c.mem = (void *) cache;
+    ethash_compute_full_data(full, params, &c);
+}
+
+static inline void ethash_compute_full(ethash_return_value *ret, void const *full, ethash_params const *params, const uint8_t header_hash[32], const uint64_t nonce) {
+    ethash_full(ret, full, params, header_hash, nonce);
+}
 
+// Returns if hash is less than or equal to difficulty
 static inline int ethash_check_difficulty(
         const uint8_t hash[32],
         const uint8_t difficulty[32]) {
@@ -81,7 +102,7 @@ static inline int ethash_check_difficulty(
         if (hash[i] == difficulty[i]) continue;
         return hash[i] < difficulty[i];
     }
-    return 0;
+    return 1;
 }
 
 int ethash_quick_check_difficulty(

Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/internal.c

@@ -1,12 +1,12 @@
 /*
-  This file is part of cpp-ethereum.
+  This file is part of ethash.
 
-  cpp-ethereum is free software: you can redistribute it and/or modify
+  ethash is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
 
-  cpp-ethereum is distributed in the hope that it will be useful,
+  ethash is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
@@ -14,7 +14,7 @@
   You should have received a copy of the GNU General Public License
   along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
 */
-/** @file dash.cpp
+/** @file internal.c
 * @author Tim Hughes <tim@twistedfury.com>
 * @author Matthew Wampler-Doty
 * @date 2015
@@ -38,12 +38,12 @@
 #endif // WITH_CRYPTOPP
 
 size_t ethash_get_datasize(const uint32_t block_number) {
-    assert(block_number / EPOCH_LENGTH < 500);
+    assert(block_number / EPOCH_LENGTH < 2048);
     return dag_sizes[block_number / EPOCH_LENGTH];
 }
 
 size_t ethash_get_cachesize(const uint32_t block_number) {
-    assert(block_number / EPOCH_LENGTH < 500);
+    assert(block_number / EPOCH_LENGTH < 2048);
     return cache_sizes[block_number / EPOCH_LENGTH];
 }
 
@@ -68,8 +68,7 @@ void static ethash_compute_cache_nodes(
             uint32_t const idx = nodes[i].words[0] % num_nodes;
             node data;
             data = nodes[(num_nodes - 1 + i) % num_nodes];
-			for (unsigned w = 0; w != NODE_WORDS; ++w)
-			{
+            for (unsigned w = 0; w != NODE_WORDS; ++w) {
                 data.words[w] ^= nodes[idx].words[w];
             }
             SHA3_512(nodes[i].bytes, data.bytes, sizeof(data));
@@ -115,8 +114,7 @@ void ethash_calculate_dag_item(
     __m128i xmm3 = ret->xmm[3];
 #endif
 
-    for (unsigned i = 0; i != DAG_PARENTS; ++i)
-	{
+    for (unsigned i = 0; i != DATASET_PARENTS; ++i) {
         uint32_t parent_index = ((node_index ^ i) * FNV_PRIME ^ ret->words[i % NODE_WORDS]) % num_parent_nodes;
         node const *parent = &cache_nodes[parent_index];
 
@@ -203,12 +201,10 @@ static void ethash_hash(
             num_full_pages = (unsigned) (params->full_size / page_size);
 
 
-    for (unsigned i = 0; i != ACCESSES; ++i)
-	{
+    for (unsigned i = 0; i != ACCESSES; ++i) {
         uint32_t const index = ((s_mix->words[0] ^ i) * FNV_PRIME ^ mix->words[i % MIX_WORDS]) % num_full_pages;
 
-        for (unsigned n = 0; n != MIX_NODES; ++n)
-		{
+        for (unsigned n = 0; n != MIX_NODES; ++n) {
             const node *dag_node = &full_nodes[MIX_NODES * index + n];
 
             if (!full_nodes) {
@@ -241,8 +237,7 @@ static void ethash_hash(
     }
 
     // compress mix
-	for (unsigned w = 0; w != MIX_WORDS; w += 4)
-	{
+    for (unsigned w = 0; w != MIX_WORDS; w += 4) {
         uint32_t reduction = mix->words[w + 0];
         reduction = reduction * FNV_PRIME ^ mix->words[w + 1];
         reduction = reduction * FNV_PRIME ^ mix->words[w + 2];
@@ -278,6 +273,13 @@ void ethash_quick_hash(
     SHA3_256(return_hash, buf, 64 + 32);
 }
 
+void ethash_get_seedhash(uint8_t seedhash[32], const uint32_t block_number) {
+    memset(seedhash, 0, 32);
+    const uint32_t epochs = block_number / EPOCH_LENGTH;
+    for (uint32_t i = 0; i < epochs; ++i)
+        SHA3_256(seedhash, seedhash, 32);
+}
+
 int ethash_quick_check_difficulty(
         const uint8_t header_hash[32],
         const uint64_t nonce,

Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/internal.h

@@ -3,7 +3,7 @@
 #include "endian.h"
 #include "ethash.h"
 
-#define ENABLE_SSE 1
+#define ENABLE_SSE 0
 
 #if defined(_M_X64) && ENABLE_SSE
 #include <smmintrin.h>

Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/sha3_cryptopp.cpp

@@ -1,18 +1,18 @@
 /*
-  This file is part of cpp-ethereum.
+  This file is part of ethash.
 
-  cpp-ethereum is free software: you can redistribute it and/or modify
+  ethash is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
 
-  cpp-ethereum is distributed in the hope that it will be useful,
+  ethash is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License
-  along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+  along with ethash.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 /** @file sha3.cpp

Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/util.h

@@ -1,18 +1,18 @@
 /*
-  This file is part of cpp-ethereum.
+  This file is part of ethash.
 
-  cpp-ethereum is free software: you can redistribute it and/or modify
+  ethash is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
 
-  cpp-ethereum is distributed in the hope that it will be useful,
+  ethash is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License
-  along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+  along with ethash.  If not, see <http://www.gnu.org/licenses/>.
 */
 /** @file util.h
  * @author Tim Hughes <tim@twistedfury.com>

Godeps/_workspace/src/github.com/ethereum/ethash/src/python/core.c

@@ -1,30 +1,47 @@
 #include <Python.h>
 #include <alloca.h>
 #include <stdint.h>
+#include <stdlib.h>
+#include <time.h>
 #include "../libethash/ethash.h"
 
+#define MIX_WORDS (MIX_BYTES/4)
+
 static PyObject *
-get_cache_size(PyObject* self, PyObject* args)
-{
+get_cache_size(PyObject *self, PyObject *args) {
     unsigned long block_number;
     if (!PyArg_ParseTuple(args, "k", &block_number))
         return 0;
+    if (block_number >= EPOCH_LENGTH * 2048) {
+        char error_message[1024];
+        sprintf(error_message, "Block number must be less than %i (was %lu)", EPOCH_LENGTH * 2048, block_number);
+
+        PyErr_SetString(PyExc_ValueError, error_message);
+        return 0;
+    }
+
     return Py_BuildValue("i", ethash_get_cachesize(block_number));
 }
 
 static PyObject *
-get_full_size(PyObject* self, PyObject* args)
-{
+get_full_size(PyObject *self, PyObject *args) {
     unsigned long block_number;
     if (!PyArg_ParseTuple(args, "k", &block_number))
         return 0;
+    if (block_number >= EPOCH_LENGTH * 2048) {
+        char error_message[1024];
+        sprintf(error_message, "Block number must be less than %i (was %lu)", EPOCH_LENGTH * 2048, block_number);
+
+        PyErr_SetString(PyExc_ValueError, error_message);
+        return 0;
+    }
+
     return Py_BuildValue("i", ethash_get_datasize(block_number));
 }
 
 
 static PyObject *
-mkcache(PyObject* self, PyObject* args)
-{
+mkcache_bytes(PyObject *self, PyObject *args) {
     char *seed;
     unsigned long cache_size;
     int seed_len;
@@ -32,33 +49,257 @@ mkcache(PyObject* self, PyObject* args)
     if (!PyArg_ParseTuple(args, "ks#", &cache_size, &seed, &seed_len))
         return 0;
 
-    if (seed_len != 32)
-    {
-      PyErr_SetString(PyExc_ValueError,
-                      "Seed must be 32 bytes long");
+    if (seed_len != 32) {
+        char error_message[1024];
+        sprintf(error_message, "Seed must be 32 bytes long (was %i)", seed_len);
+
+        PyErr_SetString(PyExc_ValueError, error_message);
         return 0;
     }
 
-    printf("cache size: %lu\n", cache_size);
     ethash_params params;
     params.cache_size = (size_t) cache_size;
     ethash_cache cache;
-    cache.mem = alloca(cache_size);
+    cache.mem = malloc(cache_size);
     ethash_mkcache(&cache, &params, (uint8_t *) seed);
-    return PyString_FromStringAndSize(cache.mem, cache_size);
+    PyObject * val = Py_BuildValue("s#", cache.mem, cache_size);
+    free(cache.mem);
+    return val;
+}
+
+
+static PyObject *
+calc_dataset_bytes(PyObject *self, PyObject *args) {
+    char *cache_bytes;
+    unsigned long full_size;
+    int cache_size;
+
+    if (!PyArg_ParseTuple(args, "ks#", &full_size, &cache_bytes, &cache_size))
+        return 0;
+
+    if (full_size % MIX_WORDS != 0) {
+        char error_message[1024];
+        sprintf(error_message, "The size of data set must be a multiple of %i bytes (was %lu)", MIX_WORDS, full_size);
+        PyErr_SetString(PyExc_ValueError, error_message);
+        return 0;
+    }
+
+    if (cache_size % HASH_BYTES != 0) {
+        char error_message[1024];
+        sprintf(error_message, "The size of the cache must be a multiple of %i bytes (was %i)", HASH_BYTES, cache_size);
+        PyErr_SetString(PyExc_ValueError, error_message);
+        return 0;
+    }
+
+    ethash_params params;
+    params.cache_size = (size_t) cache_size;
+    params.full_size = (size_t) full_size;
+    ethash_cache cache;
+    cache.mem = (void *) cache_bytes;
+    void *mem = malloc(params.full_size);
+    ethash_compute_full_data(mem, &params, &cache);
+    PyObject * val = Py_BuildValue("s#", (char *) mem, full_size);
+    free(mem);
+    return val;
+}
+
+// hashimoto_light(full_size, cache, header, nonce)
+static PyObject *
+hashimoto_light(PyObject *self, PyObject *args) {
+    char *cache_bytes, *header;
+    unsigned long full_size;
+    unsigned long long nonce;
+    int cache_size, header_size;
+
+    if (!PyArg_ParseTuple(args, "ks#s#K", &full_size, &cache_bytes, &cache_size, &header, &header_size, &nonce))
+        return 0;
+
+    if (full_size % MIX_WORDS != 0) {
+        char error_message[1024];
+        sprintf(error_message, "The size of data set must be a multiple of %i bytes (was %lu)", MIX_WORDS, full_size);
+        PyErr_SetString(PyExc_ValueError, error_message);
+        return 0;
+    }
+
+    if (cache_size % HASH_BYTES != 0) {
+        char error_message[1024];
+        sprintf(error_message, "The size of the cache must be a multiple of %i bytes (was %i)", HASH_BYTES, cache_size);
+        PyErr_SetString(PyExc_ValueError, error_message);
+        return 0;
+    }
+
+    if (header_size != 32) {
+        char error_message[1024];
+        sprintf(error_message, "Seed must be 32 bytes long (was %i)", header_size);
+        PyErr_SetString(PyExc_ValueError, error_message);
+        return 0;
+    }
+
+
+    ethash_return_value out;
+    ethash_params params;
+    params.cache_size = (size_t) cache_size;
+    params.full_size = (size_t) full_size;
+    ethash_cache cache;
+    cache.mem = (void *) cache_bytes;
+    ethash_light(&out, &cache, &params, (uint8_t *) header, nonce);
+    return Py_BuildValue("{s:s#,s:s#}",
+            "mix digest", out.mix_hash, 32,
+            "result", out.result, 32);
 }
 
+// hashimoto_full(dataset, header, nonce)
+static PyObject *
+hashimoto_full(PyObject *self, PyObject *args) {
+    char *full_bytes, *header;
+    unsigned long long nonce;
+    int full_size, header_size;
+
+    if (!PyArg_ParseTuple(args, "s#s#K", &full_bytes, &full_size, &header, &header_size, &nonce))
+        return 0;
+
+    if (full_size % MIX_WORDS != 0) {
+        char error_message[1024];
+        sprintf(error_message, "The size of data set must be a multiple of %i bytes (was %i)", MIX_WORDS, full_size);
+        PyErr_SetString(PyExc_ValueError, error_message);
+        return 0;
+    }
 
-static PyMethodDef CoreMethods[] =
+    if (header_size != 32) {
+        char error_message[1024];
+        sprintf(error_message, "Header must be 32 bytes long (was %i)", header_size);
+        PyErr_SetString(PyExc_ValueError, error_message);
+        return 0;
+    }
+
+
+    ethash_return_value out;
+    ethash_params params;
+    params.full_size = (size_t) full_size;
+    ethash_full(&out, (void *) full_bytes, &params, (uint8_t *) header, nonce);
+    return Py_BuildValue("{s:s#, s:s#}",
+            "mix digest", out.mix_hash, 32,
+            "result", out.result, 32);
+}
+
+// mine(dataset_bytes, header, difficulty_bytes)
+static PyObject *
+mine(PyObject *self, PyObject *args) {
+    char *full_bytes, *header, *difficulty;
+    srand(time(0));
+    uint64_t nonce = ((uint64_t) rand()) << 32 | rand();
+    int full_size, header_size, difficulty_size;
+
+    if (!PyArg_ParseTuple(args, "s#s#s#", &full_bytes, &full_size, &header, &header_size, &difficulty, &difficulty_size))
+        return 0;
+
+    if (full_size % MIX_WORDS != 0) {
+        char error_message[1024];
+        sprintf(error_message, "The size of data set must be a multiple of %i bytes (was %i)", MIX_WORDS, full_size);
+        PyErr_SetString(PyExc_ValueError, error_message);
+        return 0;
+    }
+
+    if (header_size != 32) {
+        char error_message[1024];
+        sprintf(error_message, "Header must be 32 bytes long (was %i)", header_size);
+        PyErr_SetString(PyExc_ValueError, error_message);
+        return 0;
+    }
+
+    if (difficulty_size != 32) {
+        char error_message[1024];
+        sprintf(error_message, "Difficulty must be an array of 32 bytes (only had %i)", difficulty_size);
+        PyErr_SetString(PyExc_ValueError, error_message);
+        return 0;
+    }
+
+    ethash_return_value out;
+    ethash_params params;
+    params.full_size = (size_t) full_size;
+
+    // TODO: Multi threading?
+    do {
+        ethash_full(&out, (void *) full_bytes, &params, (const uint8_t *) header, nonce++);
+        // TODO: disagrees with the spec https://github.com/ethereum/wiki/wiki/Ethash#mining
+    } while (!ethash_check_difficulty(out.result, (const uint8_t *) difficulty));
+
+    return Py_BuildValue("{s:s#, s:s#, s:K}",
+            "mix digest", out.mix_hash, 32,
+            "result", out.result, 32,
+            "nonce", nonce);
+}
+
+//get_seedhash(block_number)
+static PyObject *
+get_seedhash(PyObject *self, PyObject *args) {
+    unsigned long block_number;
+    if (!PyArg_ParseTuple(args, "k", &block_number))
+        return 0;
+    if (block_number >= EPOCH_LENGTH * 2048) {
+        char error_message[1024];
+        sprintf(error_message, "Block number must be less than %i (was %lu)", EPOCH_LENGTH * 2048, block_number);
+
+        PyErr_SetString(PyExc_ValueError, error_message);
+        return 0;
+    }
+    uint8_t seedhash[32];
+    ethash_get_seedhash(seedhash, block_number);
+    return Py_BuildValue("s#", (char *) seedhash, 32);
+}
+
+static PyMethodDef PyethashMethods[] =
         {
-     {"get_cache_size", get_cache_size, METH_VARARGS, "Get the cache size for a given block number"},
-     {"get_full_size", get_full_size, METH_VARARGS, "Get the full size for a given block number"},
-     {"mkcache", mkcache, METH_VARARGS, "Makes the cache for given parameters and seed hash"},
+                {"get_cache_size", get_cache_size, METH_VARARGS,
+                        "get_cache_size(block_number)\n\n"
+                                "Get the cache size for a given block number\n"
+                                "\nExample:\n"
+                                ">>> get_cache_size(0)\n"
+                                "1048384"},
+                {"get_full_size", get_full_size, METH_VARARGS,
+                        "get_full_size(block_number)\n\n"
+                                "Get the full size for a given block number\n"
+                                "\nExample:\n"
+                                ">>> get_full_size(0)\n"
+                                "1073739904"
+                },
+                {"get_seedhash", get_seedhash, METH_VARARGS,
+                        "get_seedhash(block_number)\n\n"
+                                "Gets the seedhash for a block."},
+                {"mkcache_bytes", mkcache_bytes, METH_VARARGS,
+                        "mkcache_bytes(size, header)\n\n"
+                                "Makes a byte array for the cache for given cache size and seed hash\n"
+                                "\nExample:\n"
+                                ">>> pyethash.mkcache_bytes( 1024, \"~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\").encode('hex')"
+                                "\"2da2b506f21070e1143d908e867962486d6b0a02e31d468fd5e3a7143aafa76a14201f63374314e2a6aaf84ad2eb57105dea3378378965a1b3873453bb2b78f9a8620b2ebeca41fbc773bb837b5e724d6eb2de570d99858df0d7d97067fb8103b21757873b735097b35d3bea8fd1c359a9e8a63c1540c76c9784cf8d975e995ca8620b2ebeca41fbc773bb837b5e724d6eb2de570d99858df0d7d97067fb8103b21757873b735097b35d3bea8fd1c359a9e8a63c1540c76c9784cf8d975e995ca8620b2ebeca41fbc773bb837b5e724d6eb2de570d99858df0d7d97067fb8103b21757873b735097b35d3bea8fd1c359a9e8a63c1540c76c9784cf8d975e995c259440b89fa3481c2c33171477c305c8e1e421f8d8f6d59585449d0034f3e421808d8da6bbd0b6378f567647cc6c4ba6c434592b198ad444e7284905b7c6adaf70bf43ec2daa7bd5e8951aa609ab472c124cf9eba3d38cff5091dc3f58409edcc386c743c3bd66f92408796ee1e82dd149eaefbf52b00ce33014a6eb3e50625413b072a58bc01da28262f42cbe4f87d4abc2bf287d15618405a1fe4e386fcdafbb171064bd99901d8f81dd6789396ce5e364ac944bbbd75a7827291c70b42d26385910cd53ca535ab29433dd5c5714d26e0dce95514c5ef866329c12e958097e84462197c2b32087849dab33e88b11da61d52f9dbc0b92cc61f742c07dbbf751c49d7678624ee60dfbe62e5e8c47a03d8247643f3d16ad8c8e663953bcda1f59d7e2d4a9bf0768e789432212621967a8f41121ad1df6ae1fa78782530695414c6213942865b2730375019105cae91a4c17a558d4b63059661d9f108362143107babe0b848de412e4da59168cce82bfbff3c99e022dd6ac1e559db991f2e3f7bb910cefd173e65ed00a8d5d416534e2c8416ff23977dbf3eb7180b75c71580d08ce95efeb9b0afe904ea12285a392aff0c8561ff79fca67f694a62b9e52377485c57cc3598d84cac0a9d27960de0cc31ff9bbfe455acaa62c8aa5d2cce96f345da9afe843d258a99c4eaf3650fc62efd81c7b81cd0d534d2d71eeda7a6e315d540b4473c80f8730037dc2ae3e47b986240cfc65ccc565f0d8cde0bc68a57e39a271dda57440b3598bee19f799611d25731a96b5dbbbefdff6f4f656161462633030d62560ea4e9c161cf78fc96a2ca5aaa32453a6c5dea206f766244e8c9d9a8dc61185ce37f1fc804459c5f07434f8ecb34141b8dcae7eae704c950b55556c5f40140c3714b45eddb02637513268778cbf937a33e4e33183685f9deb31ef54e90161e76d969587dd782eaa94e289420e7c2ee908517f5893a26fdb5873d68f92d118d4bcf98d7a4916794d6ab290045e30f9ea00ca547c584b8482b0331ba1539a0f2714fddc3a0b06b0cfbb6a607b8339c39bcfd6640b1f653e9d70ef6c985b\""},
+                {"calc_dataset_bytes", calc_dataset_bytes, METH_VARARGS,
+                        "calc_dataset_bytes(full_size, cache_bytes)\n\n"
+                                "Makes a byte array for the dataset for a given size given cache bytes"},
+                {"hashimoto_light", hashimoto_light, METH_VARARGS,
+                        "hashimoto_light(full_size, cache_bytes, header, nonce)\n\n"
+                                "Runs the hashimoto hashing function just using cache bytes. Takes an int (full_size), byte array (cache_bytes), another byte array (header), and an int (nonce). Returns an object containing the mix digest, and hash result."},
+                {"hashimoto_full", hashimoto_full, METH_VARARGS,
+                        "hashimoto_full(dataset_bytes, header, nonce)\n\n"
+                                "Runs the hashimoto hashing function using the dataset bytes. Useful for testing. Returns an object containing the mix digest (byte array), and hash result (another byte array)."},
+                {"mine", mine, METH_VARARGS,
+                        "mine(dataset_bytes, header, difficulty_bytes)\n\n"
+                                "Mine for an adequate header. Returns an object containing the mix digest (byte array), hash result (another byte array) and nonce (an int)."},
                 {NULL, NULL, 0, NULL}
         };
 
 PyMODINIT_FUNC
-initcore(void)
-{
-     (void) Py_InitModule("core", CoreMethods);
+initpyethash(void) {
+    PyObject *module = Py_InitModule("pyethash", PyethashMethods);
+    // Following Spec: https://github.com/ethereum/wiki/wiki/Ethash#definitions
+    PyModule_AddIntConstant(module, "REVISION", (long) REVISION);
+    PyModule_AddIntConstant(module, "DATASET_BYTES_INIT", (long) DATASET_BYTES_INIT);
+    PyModule_AddIntConstant(module, "DATASET_BYTES_GROWTH", (long) DATASET_BYTES_GROWTH);
+    PyModule_AddIntConstant(module, "CACHE_BYTES_INIT", (long) CACHE_BYTES_INIT);
+    PyModule_AddIntConstant(module, "CACHE_BYTES_GROWTH", (long) CACHE_BYTES_GROWTH);
+    PyModule_AddIntConstant(module, "EPOCH_LENGTH", (long) EPOCH_LENGTH);
+    PyModule_AddIntConstant(module, "MIX_BYTES", (long) MIX_BYTES);
+    PyModule_AddIntConstant(module, "HASH_BYTES", (long) HASH_BYTES);
+    PyModule_AddIntConstant(module, "DATASET_PARENTS", (long) DATASET_PARENTS);
+    PyModule_AddIntConstant(module, "CACHE_ROUNDS", (long) CACHE_ROUNDS);
+    PyModule_AddIntConstant(module, "ACCESSES", (long) ACCESSES);
 }

Godeps/_workspace/src/github.com/ethereum/ethash/test/c/test.cpp

@@ -4,7 +4,9 @@
 #include <libethash/internal.h>
 
 #ifdef WITH_CRYPTOPP
+
 #include <libethash/sha3_cryptopp.h>
+
 #else
 #include <libethash/sha3.h>
 #endif // WITH_CRYPTOPP
@@ -65,22 +67,22 @@ BOOST_AUTO_TEST_CASE(SHA512_check) {
 BOOST_AUTO_TEST_CASE(ethash_params_init_genesis_check) {
     ethash_params params;
     ethash_params_init(&params, 0);
-    BOOST_REQUIRE_MESSAGE(params.full_size  < DAGSIZE_BYTES_INIT,
+    BOOST_REQUIRE_MESSAGE(params.full_size < DATASET_BYTES_INIT,
             "\nfull size: " << params.full_size << "\n"
-                    << "should be less than or equal to: " << DAGSIZE_BYTES_INIT << "\n");
-    BOOST_REQUIRE_MESSAGE(params.full_size + 20*MIX_BYTES >= DAGSIZE_BYTES_INIT,
+                    << "should be less than or equal to: " << DATASET_BYTES_INIT << "\n");
+    BOOST_REQUIRE_MESSAGE(params.full_size + 20 * MIX_BYTES >= DATASET_BYTES_INIT,
             "\nfull size + 20*MIX_BYTES: " << params.full_size + 20 * MIX_BYTES << "\n"
-                    << "should be greater than or equal to: " << DAGSIZE_BYTES_INIT << "\n");
-    BOOST_REQUIRE_MESSAGE(params.cache_size < DAGSIZE_BYTES_INIT / 32,
+                    << "should be greater than or equal to: " << DATASET_BYTES_INIT << "\n");
+    BOOST_REQUIRE_MESSAGE(params.cache_size < DATASET_BYTES_INIT / 32,
             "\ncache size: " << params.cache_size << "\n"
-                    << "should be less than or equal to: " << DAGSIZE_BYTES_INIT / 32 << "\n");
+                    << "should be less than or equal to: " << DATASET_BYTES_INIT / 32 << "\n");
 }
 
 BOOST_AUTO_TEST_CASE(ethash_params_init_genesis_calcifide_check) {
     ethash_params params;
     ethash_params_init(&params, 0);
     const uint32_t expected_full_size = 1073739904;
-    const uint32_t expected_cache_size = 1048384;
+    const uint32_t expected_cache_size = 16776896;
     BOOST_REQUIRE_MESSAGE(params.full_size == expected_full_size,
             "\nexpected: " << expected_cache_size << "\n"
                     << "actual: " << params.full_size << "\n");
@@ -91,10 +93,17 @@ BOOST_AUTO_TEST_CASE(ethash_params_init_genesis_calcifide_check) {
 
 BOOST_AUTO_TEST_CASE(light_and_full_client_checks) {
     ethash_params params;
-    uint8_t seed[32], hash[32];
+    uint8_t seed[32], hash[32], difficulty[32];
     ethash_return_value light_out, full_out;
     memcpy(seed, "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
     memcpy(hash, "~~~X~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
+
+    // Set the difficulty
+    difficulty[0] = 197;
+    difficulty[1] = 90;
+    for (int i = 2; i < 32; i++)
+        difficulty[i] = (uint8_t) 255;
+
     ethash_params_init(&params, 0);
     params.cache_size = 1024;
     params.full_size = 1024 * 32;
@@ -115,7 +124,6 @@ BOOST_AUTO_TEST_CASE(light_and_full_client_checks) {
     }
 
 
-
     {
         node node;
         ethash_calculate_dag_item(&node, 0, &params, &cache);
@@ -187,6 +195,12 @@ BOOST_AUTO_TEST_CASE(light_and_full_client_checks) {
         BOOST_REQUIRE_MESSAGE(full_mix_hash_string == light_mix_hash_string,
                 "\nlight mix hash: " << light_mix_hash_string.c_str() << "\n"
                         << "full mix hash: " << full_mix_hash_string.c_str() << "\n");
+        BOOST_REQUIRE_MESSAGE(ethash_check_difficulty(full_out.result, difficulty),
+                "ethash_check_difficulty failed"
+        );
+        BOOST_REQUIRE_MESSAGE(ethash_quick_check_difficulty(hash, 5U, full_out.mix_hash, difficulty),
+                "ethash_quick_check_difficulty failed"
+        );
     }
 }
 
@@ -199,14 +213,14 @@ BOOST_AUTO_TEST_CASE(ethash_check_difficulty_check) {
     memcpy(target, "22222222222222222222222222222222", 32);
     BOOST_REQUIRE_MESSAGE(
             ethash_check_difficulty(hash, target),
-            "\nexpected \"" << hash << "\" to have less difficulty than \"" << target << "\"\n");
+            "\nexpected \"" << std::string((char *) hash, 32).c_str() << "\" to have the same or less difficulty than \"" << std::string((char *) target, 32).c_str() << "\"\n");
     BOOST_REQUIRE_MESSAGE(
-            !ethash_check_difficulty(hash, hash),
-            "\nexpected \"" << hash << "\" to have the same difficulty as \"" << hash << "\"\n");
+            ethash_check_difficulty(hash, hash),
+            "\nexpected \"" << hash << "\" to have the same or less difficulty than \"" << hash << "\"\n");
     memcpy(target, "11111111111111111111111111111112", 32);
     BOOST_REQUIRE_MESSAGE(
             ethash_check_difficulty(hash, target),
-            "\nexpected \"" << hash << "\" to have less difficulty than \"" << target << "\"\n");
+            "\nexpected \"" << hash << "\" to have the same or less difficulty than \"" << target << "\"\n");
     memcpy(target, "11111111111111111111111111111110", 32);
     BOOST_REQUIRE_MESSAGE(
             !ethash_check_difficulty(hash, target),

Godeps/_workspace/src/github.com/ethereum/ethash/test/go/ethash_test.go

@@ -0,0 +1,82 @@
+package ethashTest
+
+import (
+	"bytes"
+	"crypto/rand"
+	"encoding/hex"
+	"log"
+	"math/big"
+	"testing"
+
+	"github.com/ethereum/ethash"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/ethdb"
+)
+
+func TestEthash(t *testing.T) {
+	seedHash := make([]byte, 32)
+	_, err := rand.Read(seedHash)
+	if err != nil {
+		panic(err)
+	}
+
+	db, err := ethdb.NewMemDatabase()
+	if err != nil {
+		panic(err)
+	}
+
+	blockProcessor, err := core.NewCanonical(5, db)
+	if err != nil {
+		panic(err)
+	}
+
+	log.Println("Block Number: ", blockProcessor.ChainManager().CurrentBlock().Number())
+
+	e := ethash.New(blockProcessor.ChainManager())
+
+	miningHash := make([]byte, 32)
+	if _, err := rand.Read(miningHash); err != nil {
+		panic(err)
+	}
+	diff := big.NewInt(10000)
+	log.Println("difficulty", diff)
+
+	nonce := uint64(0)
+
+	ghash_full := e.FullHash(nonce, miningHash)
+	log.Printf("ethash full (on nonce): %x %x\n", ghash_full, nonce)
+
+	ghash_light := e.LightHash(nonce, miningHash)
+	log.Printf("ethash light (on nonce): %x %x\n", ghash_light, nonce)
+
+	if bytes.Compare(ghash_full, ghash_light) != 0 {
+		t.Errorf("full: %x, light: %x", ghash_full, ghash_light)
+	}
+}
+
+func TestGetSeedHash(t *testing.T) {
+	seed0, err := ethash.GetSeedHash(0)
+	if err != nil {
+		t.Errorf("Failed to get seedHash for block 0: %v", err)
+	}
+	if bytes.Compare(seed0, []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}) != 0 {
+		log.Printf("seedHash for block 0 should be 0s, was: %v\n", seed0)
+	}
+	seed1, err := ethash.GetSeedHash(30000)
+	if err != nil {
+		t.Error(err)
+	}
+
+	// From python:
+	// > from pyethash import get_seedhash
+	// > get_seedhash(30000)
+	expectedSeed1, err := hex.DecodeString("290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563")
+	if err != nil {
+		t.Error(err)
+	}
+
+	if bytes.Compare(seed1, expectedSeed1) != 0 {
+		log.Printf("seedHash for block 1 should be: %v,\nactual value: %v\n", expectedSeed1, seed1)
+	}
+
+}

Godeps/_workspace/src/github.com/ethereum/ethash/test/go/test.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+# Strict mode
+set -e
+
+SOURCE="${BASH_SOURCE[0]}"
+while [ -h "$SOURCE" ]; do
+  DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
+  SOURCE="$(readlink "$SOURCE")"
+  [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE"
+done
+TEST_DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
+
+export GOPATH=${HOME}/.go
+export PATH=$PATH:$GOPATH/bin 
+echo "# getting go dependencies (can take some time)..."
+cd ${TEST_DIR}/../.. && go get 
+cd ${GOPATH}/src/github.com/ethereum/go-ethereum
+git checkout poc-9
+cd ${TEST_DIR} && go test

Godeps/_workspace/src/github.com/ethereum/ethash/test/python/requirements.txt

@@ -1,2 +1,3 @@
 pyethereum==0.7.522
 nose==1.3.4
+pysha3==0.3

Godeps/_workspace/src/github.com/ethereum/ethash/test/python/test.sh

@@ -14,6 +14,6 @@ TEST_DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
 [ -d $TEST_DIR/python-virtual-env ] || virtualenv --system-site-packages $TEST_DIR/python-virtual-env
 source $TEST_DIR/python-virtual-env/bin/activate
 pip install -r $TEST_DIR/requirements.txt > /dev/null
-pip install -e $TEST_DIR/../.. > /dev/null
+pip install --upgrade --no-deps --force-reinstall -e $TEST_DIR/../..
 cd $TEST_DIR
-nosetests --with-doctest -v
+nosetests --with-doctest -v --nocapture

Godeps/_workspace/src/github.com/ethereum/ethash/test/python/test_pyethash.py

@@ -4,42 +4,102 @@ from random import randint
 def test_get_cache_size_not_None():
     for _ in range(100):
         block_num = randint(0,12456789)
-        out = pyethash.core.get_cache_size(block_num)
+        out = pyethash.get_cache_size(block_num)
         assert out != None
 
 def test_get_full_size_not_None():
     for _ in range(100):
         block_num = randint(0,12456789)
-        out = pyethash.core.get_full_size(block_num)
+        out = pyethash.get_full_size(block_num)
         assert out != None
 
 def test_get_cache_size_based_on_EPOCH():
     for _ in range(100):
         block_num = randint(0,12456789)
-        out1 = pyethash.core.get_cache_size(block_num)
-        out2 = pyethash.core.get_cache_size((block_num // pyethash.EPOCH_LENGTH) * pyethash.EPOCH_LENGTH)
+        out1 = pyethash.get_cache_size(block_num)
+        out2 = pyethash.get_cache_size((block_num // pyethash.EPOCH_LENGTH) * pyethash.EPOCH_LENGTH)
         assert out1 == out2
 
 def test_get_full_size_based_on_EPOCH():
     for _ in range(100):
         block_num = randint(0,12456789)
-        out1 = pyethash.core.get_full_size(block_num)
-        out2 = pyethash.core.get_full_size((block_num // pyethash.EPOCH_LENGTH) * pyethash.EPOCH_LENGTH)
+        out1 = pyethash.get_full_size(block_num)
+        out2 = pyethash.get_full_size((block_num // pyethash.EPOCH_LENGTH) * pyethash.EPOCH_LENGTH)
         assert out1 == out2
 
-#def test_get_params_based_on_EPOCH():
-#    block_num = 123456
-#    out1 = pyethash.core.get_params(block_num)
-#    out2 = pyethash.core.get_params((block_num // pyethash.EPOCH_LENGTH) * pyethash.EPOCH_LENGTH)
-#    assert out1["DAG Size"] == out2["DAG Size"]
-#    assert out1["Cache Size"] == out2["Cache Size"]
-#
-#def test_get_params_returns_different_values_based_on_different_block_input():
-#    out1 = pyethash.core.get_params(123456)
-#    out2 = pyethash.core.get_params(12345)
-#    assert out1["DAG Size"] != out2["DAG Size"]
-#    assert out1["Cache Size"] != out2["Cache Size"]
-#
-#def test_get_cache_smoke_test():
-#    params = pyethash.core.get_params(123456)
-#    assert pyethash.core.mkcache(params, "~~~~") != None
+# See light_and_full_client_checks in test.cpp
+def test_mkcache_is_as_expected():
+    actual = pyethash.mkcache_bytes(
+        1024,
+        "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~").encode('hex')
+    expected = "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"
+    assert actual == expected
+
+def test_calc_dataset_is_not_None():
+    cache = pyethash.mkcache_bytes(
+              1024,
+              "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~")
+    assert pyethash.calc_dataset_bytes(1024 * 32, cache) != None
+
+def test_light_and_full_agree():
+    cache = pyethash.mkcache_bytes(
+              1024,
+              "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~")
+    full_size = 1024 * 32
+    header = "~~~~~X~~~~~~~~~~~~~~~~~~~~~~~~~~"
+    light_result = pyethash.hashimoto_light(full_size, cache, header, 0)
+    dataset = pyethash.calc_dataset_bytes(full_size, cache)
+    full_result = pyethash.hashimoto_full(dataset, header, 0)
+    assert light_result["mix digest"] != None
+    assert len(light_result["mix digest"]) == 32
+    assert light_result["mix digest"] == full_result["mix digest"]
+    assert light_result["result"] != None
+    assert len(light_result["result"]) == 32
+    assert light_result["result"] == full_result["result"]
+
+def int_to_bytes(i):
+    b = []
+    for _ in range(32):
+        b.append(chr(i & 0xff))
+        i >>= 8
+    b.reverse()
+    return "".join(b)
+
+def test_mining_basic():
+    easy_difficulty = int_to_bytes(2**256 - 1)
+    assert easy_difficulty.encode('hex') == 'f' * 64
+    cache = pyethash.mkcache_bytes(
+              1024,
+              "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~")
+    full_size = 1024 * 32
+    header = "~~~~~X~~~~~~~~~~~~~~~~~~~~~~~~~~"
+    dataset = pyethash.calc_dataset_bytes(full_size, cache)
+    # Check type of outputs
+    assert type(pyethash.mine(dataset,header,easy_difficulty)) == dict
+    assert type(pyethash.mine(dataset,header,easy_difficulty)["nonce"]) == long
+    assert type(pyethash.mine(dataset,header,easy_difficulty)["mix digest"]) == str
+    assert type(pyethash.mine(dataset,header,easy_difficulty)["result"]) == str
+
+def test_mining_doesnt_always_return_the_same_value():
+    easy_difficulty1 = int_to_bytes(int(2**256 * 0.999))
+    # 1 in 1000 difficulty
+    easy_difficulty2 = int_to_bytes(int(2**256 * 0.001))
+    assert easy_difficulty1 != easy_difficulty2
+    cache = pyethash.mkcache_bytes(
+              1024,
+              "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~")
+    full_size = 1024 * 32
+    header = "~~~~~X~~~~~~~~~~~~~~~~~~~~~~~~~~"
+    dataset = pyethash.calc_dataset_bytes(full_size, cache)
+    # Check type of outputs
+    assert pyethash.mine(dataset, header, easy_difficulty1)['nonce'] != pyethash.mine(dataset, header, easy_difficulty2)['nonce']
+
+def test_get_seedhash():
+    assert pyethash.get_seedhash(0).encode('hex') == '0' * 64
+    import hashlib, sha3
+    expected = pyethash.get_seedhash(0)
+    #print "checking seed hashes:",
+    for i in range(0, 30000*2048, 30000):
+        #print i // 30000,
+        assert pyethash.get_seedhash(i) == expected
+        expected = hashlib.sha3_256(expected).digest()

Godeps/_workspace/src/github.com/ethereum/ethash/test/test.sh

@@ -14,7 +14,12 @@ TEST_DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
 echo -e "\n################# Testing JS ##################"
 # TODO: Use mocha and real testing tools instead of rolling our own
 cd $TEST_DIR/../js 
+if [ -x "$(which nodejs)" ] ; then 
+	nodejs test.js
+fi
+if [ -x "$(which node)" ] ; then 
 	node test.js
+fi
 
 echo -e "\n################# Testing C ##################"
 $TEST_DIR/c/test.sh