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README.md

Strategy

curve25519 Backend Baseline cmp ed25519 Releases
[default] serial u32 -- 1.x*, 2.x
[default] serial u64 u32 1.x, 2.x
fiat_u32 u64 2.x
fiat_u64 fiat_u32** 2.x
simd avx2 fiat_u64** 1.x, 2.x
  • *The u32 backend was broken in 1.x
  • **The fiat backend was not available in 1.x - comparison is against u64

1.x Series

Report Description Snapshots
avx2 avx2 over u64 nightly-x86_64-unknown-linux-gnu 2022-14-1858-000
  • Broken: env cargo +nightly bench --features "u32_backend batch" > ~/ed25519-dalek-bench-u32.txt 2>&1 ; \
cargo +nightly bench --features batch > ~/ed25519-dalek-bench-u64.txt 2>&1 ; \
env RUSTFLAGS='-C target_feature=+avx2' cargo +nightly bench --features "simd_backend batch" > ~/ed25519-dalek-bench-avx2.txt 2>&1

2.x Series

Report Description Snapshots
u32 Default serial u32 nightly-x86_64-unknown-linux-gnu 2022-14-1858-000
u64 Default serial u64 nightly-x86_64-unknown-linux-gnu 2022-14-1858-000
fiat_u32 With fiat u32 nightly-x86_64-unknown-linux-gnu 2022-14-1858-000
fiat_u64 With fiat u64 nightly-x86_64-unknown-linux-gnu 2022-14-1858-000
avx2 With simd avx2 nightly-x86_64-unknown-linux-gnu 2022-14-1858-000

Linux

Tear down/up

In the to-be-tested crate directory

rm -rf target
rm -rf /tmp/ed25519-bench-results
mkdir -p /tmp/ed25519-bench-results/u32-baseline
mkdir -p /tmp/ed25519-bench-results/u64-delta-u32
mkdir -p /tmp/ed25519-bench-results/fiat_u32-delta-u64
mkdir -p /tmp/ed25519-bench-results/fiat_u64-delta-fiat_u32
mkdir -p /tmp/ed25519-bench-results/avx2-delta-fiat_u64

u32 Baseline

env RUSTFLAGS='--cfg curve25519_dalek_bits="32"' cargo +nightly bench --features batch > ~/ed25519-dalek-bench-u32.txt 2>&1 ; \
cp -R target/criterion/* /tmp/ed25519-bench-results/u32-baseline/ ; \

u64 over u32 baseline

cargo +nightly bench --features batch > ~/ed25519-dalek-bench-u64.txt 2>&1 ; \
cp -R target/criterion/* /tmp/ed25519-bench-results/u64-delta-u32/ ; \

fiat_u32 over u64

env RUSTFLAGS='--cfg curve25519_dalek_backend="fiat" --cfg curve25519_dalek_bits="32"' cargo +nightly bench --features batch > ~/ed25519-dalek-bench-fiat_u32.txt 2>&1 ; \
cp -R target/criterion/* /tmp/ed25519-bench-results/fiat_u32-delta-u64/ ; \

fiat_u64 over fiat_u32

env RUSTFLAGS='--cfg curve25519_dalek_backend="fiat"' cargo +nightly bench --features batch > ~/ed25519-dalek-bench-fiat_u64.txt 2>&1 ; \
cp -R target/criterion/* /tmp/ed25519-bench-results/fiat_u64-delta-fiat_u32/ ; \

simd +avx2 over fiat_u64

env RUSTFLAGS='-C target_feature=+avx2 --cfg curve25519_dalek_backend="simd"' cargo +nightly bench --features batch > ~/ed25519-dalek-bench-avx2.txt 2>&1
cp -R target/criterion/* /tmp/ed25519-bench-results/avx2-delta-fiat_u64