[ethash] remove manual unrolling (#11069)
* [ethash] remove unroll in calculate_dag_item * [ethash] add keccak bench * [ethash] remove unroll! completely * [ethash] specify required-features for benches * [ethcore/verification] specify required-features for benches * [CI] simplify cargo-check-benches step
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Andronik Ordian
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fc22c58408
@ -100,9 +100,7 @@ cargo-check-benches:
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stage: test
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<<: *docker-cache-status
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script:
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- time (cargo check --all --benches --exclude ethash --exclude verification --target $CARGO_TARGET --locked --verbose --color=always)
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- time (cd ethash; cargo check --benches --features bench --target $CARGO_TARGET --locked --verbose --color=always)
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- time (cd ethcore/verification; cargo check --benches --features bench --target $CARGO_TARGET --locked --verbose --color=always)
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- time cargo check --all --benches --target $CARGO_TARGET --locked --verbose --color=always
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- sccache -s
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cargo-audit:
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1
Cargo.lock
generated
1
Cargo.lock
generated
@ -936,7 +936,6 @@ version = "1.12.0"
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dependencies = [
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"common-types 0.1.0",
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"criterion 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"crunchy 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
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"either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"ethereum-types 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"keccak-hash 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
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@ -6,7 +6,6 @@ authors = ["Parity Technologies <admin@parity.io>"]
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[dependencies]
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common-types = { path = "../ethcore/types" }
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crunchy = "0.1.0"
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either = "1.0.0"
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ethereum-types = "0.6.0"
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keccak-hash = "0.2.0"
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@ -29,7 +28,9 @@ bench = []
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[[bench]]
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name = "basic"
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harness = false
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required-features = ['bench']
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[[bench]]
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name = "progpow"
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harness = false
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required-features = ['bench']
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@ -20,7 +20,7 @@ extern crate ethash;
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extern crate common_types;
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use criterion::Criterion;
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use ethash::NodeCacheBuilder;
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use ethash::{NodeCacheBuilder, keccak};
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use common_types::engines::OptimizeFor;
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const HASH: [u8; 32] = [
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@ -40,7 +40,8 @@ const NONCE: u64 = 0xd7b3ac70a301a249;
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criterion_group! {
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name = basic;
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config = dont_take_an_eternity_to_run();
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targets = bench_light_compute_memmap,
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targets = bench_keccak_512_inplace,
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bench_light_compute_memmap,
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bench_light_compute_memory,
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bench_light_new_round_trip_memmap,
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bench_light_new_round_trip_memory,
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@ -56,6 +57,13 @@ fn dont_take_an_eternity_to_run() -> Criterion {
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.sample_size(10)
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}
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fn bench_keccak_512_inplace(b: &mut Criterion) {
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b.bench_function("bench_keccak_512_inplace", move |b| b.iter(|| {
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let mut data = [4u8; 64];
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keccak::keccak_512::inplace(&mut data);
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}));
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}
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fn bench_light_compute_memmap(b: &mut Criterion) {
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use std::env;
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@ -21,7 +21,7 @@ use memmap::MmapMut;
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use parking_lot::Mutex;
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use seed_compute::SeedHashCompute;
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use shared::{ETHASH_CACHE_ROUNDS, NODE_BYTES, NODE_DWORDS, Node, epoch, get_cache_size, to_hex};
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use shared::{ETHASH_CACHE_ROUNDS, NODE_BYTES, Node, epoch, get_cache_size, to_hex};
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use std::borrow::Cow;
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use std::fs;
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@ -317,11 +317,6 @@ unsafe fn initialize_memory(memory: *mut Node, num_nodes: usize, ident: &H256) {
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// Now this is initialized, we can treat it as a slice.
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let nodes: &mut [Node] = slice::from_raw_parts_mut(memory, num_nodes);
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// For `unroll!`, see below. If the literal in `unroll!` is not the same as the RHS here then
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// these have got out of sync! Don't let this happen!
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debug_assert_eq!(NODE_DWORDS, 8);
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// This _should_ get unrolled by the compiler, since it's not using the loop variable.
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for _ in 0..ETHASH_CACHE_ROUNDS {
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for i in 0..num_nodes {
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let data_idx = (num_nodes - 1 + i) % num_nodes;
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@ -331,11 +326,8 @@ unsafe fn initialize_memory(memory: *mut Node, num_nodes: usize, ident: &H256) {
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let mut data: Node = nodes.get_unchecked(data_idx).clone();
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let rhs: &Node = nodes.get_unchecked(idx);
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unroll! {
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for w in 0..8 {
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*data.as_dwords_mut().get_unchecked_mut(w) ^=
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*rhs.as_dwords().get_unchecked(w);
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}
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for (a, b) in data.as_dwords_mut().iter_mut().zip(rhs.as_dwords()) {
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*a ^= *b;
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}
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data
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@ -239,7 +239,6 @@ fn hash_compute(light: &Light, full_size: usize, header_hash: &H256, nonce: u64)
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fnv_hash(first_val ^ i, mix_words[i as usize % MIX_WORDS]) % num_full_pages
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};
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unroll! {
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// MIX_NODES
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for n in 0..2 {
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let tmp_node = calculate_dag_item(
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@ -247,16 +246,9 @@ fn hash_compute(light: &Light, full_size: usize, header_hash: &H256, nonce: u64)
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cache,
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);
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unroll! {
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// NODE_WORDS
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for w in 0..16 {
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mix[n].as_words_mut()[w] =
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fnv_hash(
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mix[n].as_words()[w],
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tmp_node.as_words()[w],
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);
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}
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}
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for (a, b) in mix[n].as_words_mut().iter_mut().zip(tmp_node.as_words()) {
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*a = fnv_hash(*a, *b);
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}
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}
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}
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@ -277,7 +269,6 @@ fn hash_compute(light: &Light, full_size: usize, header_hash: &H256, nonce: u64)
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// Compress mix
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debug_assert_eq!(MIX_WORDS / 4, 8);
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unroll! {
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for i in 0..8 {
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let w = i * 4;
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@ -288,7 +279,6 @@ fn hash_compute(light: &Light, full_size: usize, header_hash: &H256, nonce: u64)
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compress[i] = reduction;
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}
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}
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}
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let mix_hash = buf.compress_bytes;
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@ -312,7 +302,6 @@ fn hash_compute(light: &Light, full_size: usize, header_hash: &H256, nonce: u64)
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ProofOfWork { mix_hash: mix_hash, value: value }
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}
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// TODO: Use the `simd` crate
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pub fn calculate_dag_item(node_index: u32, cache: &[Node]) -> Node {
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let num_parent_nodes = cache.len();
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let mut ret = cache[node_index as usize % num_parent_nodes].clone();
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@ -326,10 +315,8 @@ pub fn calculate_dag_item(node_index: u32, cache: &[Node]) -> Node {
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num_parent_nodes as u32;
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let parent = &cache[parent_index as usize];
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unroll! {
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for w in 0..16 {
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ret.as_words_mut()[w] = fnv_hash(ret.as_words()[w], parent.as_words()[w]);
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}
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for (a, b) in ret.as_words_mut().iter_mut().zip(parent.as_words()) {
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*a = fnv_hash(*a, *b);
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}
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}
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@ -21,8 +21,6 @@ extern crate memmap;
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extern crate parking_lot;
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extern crate primal;
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#[macro_use]
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extern crate crunchy;
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#[macro_use]
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extern crate log;
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#[macro_use]
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@ -44,6 +42,9 @@ mod compute;
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mod seed_compute;
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mod cache;
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#[cfg(feature = "bench")]
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pub mod keccak;
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#[cfg(not(feature = "bench"))]
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mod keccak;
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mod shared;
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@ -9,6 +9,7 @@ license = "GPL-3.0"
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[[bench]]
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name = "verification"
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harness = false
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required-features = ['bench']
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[dependencies]
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blockchain = { package = "ethcore-blockchain", path = "../blockchain" }
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