How to replicate

You can test and benchmark slas on your local machine by running cargo test -p tests and cargo bench -p tests respectively, in the repository root.

If you want to compare performance of slas, ndarray and nalgebra you can run

cargo bench -j8 -p tests --features tests/versus

Dot product benchmarks

All benchmarks are for 32-bit real floats using blis as a blas provider. Allocations are not being benchmarked, only the actual dot product function. Benchmarks have been run for vectors of multiple different sizes, the most relevant results are shown bellow.

Lower points are better

100

test versus::nalgebra::dot     ... bench:          18 ns/iter (+/- 2)
test versus::ndarray::dot      ... bench:          53 ns/iter (+/- 8)
test versus::slas::dot_blas    ... bench:          52 ns/iter (+/- 8)
test versus::slas::dot_default ... bench:          19 ns/iter (+/- 3)
test versus::slas::dot_rust    ... bench:          19 ns/iter (+/- 2)

750

test versus::nalgebra::dot     ... bench:         136 ns/iter (+/- 26)
test versus::ndarray::dot      ... bench:         128 ns/iter (+/- 14)
test versus::slas::dot_blas    ... bench:         126 ns/iter (+/- 20)
test versus::slas::dot_default ... bench:         126 ns/iter (+/- 16)
test versus::slas::dot_rust    ... bench:         230 ns/iter (+/- 29)

10000

test versus::nalgebra::dot     ... bench:       1,700 ns/iter (+/- 305)
test versus::ndarray::dot      ... bench:       1,044 ns/iter (+/- 69)
test versus::slas::dot_blas    ... bench:       1,086 ns/iter (+/- 113)
test versus::slas::dot_default ... bench:       1,077 ns/iter (+/- 233)
test versus::slas::dot_rust    ... bench:       3,403 ns/iter (+/- 538)

20000

test versus::nalgebra::dot     ... bench:       3,494 ns/iter (+/- 529)
test versus::ndarray::dot      ... bench:       2,452 ns/iter (+/- 449)
test versus::slas::dot_blas    ... bench:       2,090 ns/iter (+/- 277)
test versus::slas::dot_default ... bench:       2,252 ns/iter (+/- 375)
test versus::slas::dot_rust    ... bench:       6,897 ns/iter (+/- 886)