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consensus/ethash: use 64bit indexes for the DAG generation #21793

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merged 2 commits into from
Nov 11, 2020
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consensus/ethash: use 64bit indexes for the DAG generation #21793

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46750bc
Bit boundary fix for the DAG generation routine
shrikus Nov 6, 2020
cea20af
Fix unnecessary conversion warnings
shrikus Nov 6, 2020
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10 changes: 5 additions & 5 deletions consensus/ethash/algorithm.go
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Original file line number Diff line number Diff line change
Expand Up @@ -304,16 +304,16 @@ func generateDataset(dest []uint32, epoch uint64, cache []uint32) {
keccak512 := makeHasher(sha3.NewLegacyKeccak512())

// Calculate the data segment this thread should generate
batch := uint32((size + hashBytes*uint64(threads) - 1) / (hashBytes * uint64(threads)))
first := uint32(id) * batch
batch := (size + hashBytes*uint64(threads) - 1) / (hashBytes * uint64(threads))
first := uint64(id) * batch
limit := first + batch
if limit > uint32(size/hashBytes) {
limit = uint32(size / hashBytes)
if limit > size/hashBytes {
limit = size / hashBytes
}
// Calculate the dataset segment
percent := uint32(size / hashBytes / 100)
for index := first; index < limit; index++ {
item := generateDatasetItem(cache, index, keccak512)
item := generateDatasetItem(cache, uint32(index), keccak512)
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if swapped {
swap(item)
}
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