1 unstable release
| 0.1.0 | May 26, 2023 |
|---|
#833 in Hardware support
19KB
423 lines
Another algorithm base on SIMD which use to check slice is sorted or not
It both support SSE2 and AVX2 and much faster than regular implementations.
generic
[ a, b, c, d .... x, y, z]
compare a and b,
compare b and c,
compare c and d
SIMD
[ a, b, c, d .... x, y, z]
load [a, b, c, d] into chunk0,
load [b, c, d, d] into chunk1,
compare chunk0 and chunk1,
load [d, e, f, g] into chunk0,
load [e, f, g, g] into chunk1,
compare chunk0 and chunk1 again
Benchmark on AMD
| size | generic | sse | avx2 |
|---|---|---|---|
| 4 | 7.4974 ns | 8.3876 ns | 1.1984 ns |
| 32 | 65.302 ns | 40.632 ns | 16.469 ns |
| 64 | 121.92 ns | 71.861 ns | 30.551 ns |
| 128 | 237.09 ns | 144.08 ns | 66.191 ns |
| 256 | 466.77 ns | 273.48 ns | 99.640 ns |
| 1024 | 1.8486 µs | 1.0634 µs | 410.66 ns |
| 4096 | 7.3648 µs | 4.2080 µs | 6.1038 µs |
| 16384 | 29.458 µs | 16.702 µs | 6.1038 µs |
| 65536 | 117.82 µs | 66.982 µs | 24.355 µs |
Dependencies
~505KB
~10K SLoC