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Aatch / ramp

RAMP - Rust Arithmetic in Multiple Precision
Apache License 2.0
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div_1000 & pow_10 slow on default 32-bit Rust #61

Closed MagaTailor closed 8 years ago

MagaTailor commented 8 years ago

Compiled with default codegen (pentium4) settings:

test int::test::bench_div_1000_1000 ... bench: 7,178 ns/iter (+/- 9,400) test int::test::bench_pow_10_10 ... bench: 2,717 ns/iter (+/- 9,571)

whereas with pentium2:

test int::test::bench_div_1000_1000 ... bench: 1,431 ns/iter (+/- 9,266) test int::test::bench_pow_10_10 ... bench: 1,576 ns/iter (+/- 9,464)

Used rustc 1.8 (0d1cd9b) after llvm rebase. The rest of the benchmarks didn't exhibit any anomalous results.

MagaTailor commented 8 years ago

I didn't repeat the benchmarks enough times to notice those high error bars were really causing lots of variability. My bad!