I've made a simple performance test
i7-4790 3.60GHz + Windows 10 17763 + rustc 1.31.0-nightly (2bd5993ca 2018-10-02) x86_64-pc-windows-msvc
| Test |
Time(s) |
| ndarray_iter |
2.684 |
| slice_iter |
0.875 |
| slice_loop_safe_good |
0.298 |
i7-4790 3.60GHz + Windows 10 17763 + rustc 1.31.0-nightly (2bd5993ca 2018-10-02) x86_64-pc-windows-msvc + Thin LTO
| Test |
Time(s) |
| ndarray_iter |
1.310 |
| slice_iter |
0.776 |
| slice_loop_safe_good |
0.288 |
| ndarray_loop_safe_good |
0.133 |
| slice_loop_unsafe_good |
0.132 |
Iterate over a ArrayView is incredible slow than slice.
But for loop on ArrayView as fast as to get_unchecked on slice.
Maybe a bug?
I've made a simple performance test
i7-4790 3.60GHz+Windows 10 17763+rustc 1.31.0-nightly (2bd5993ca 2018-10-02) x86_64-pc-windows-msvci7-4790 3.60GHz+Windows 10 17763+rustc 1.31.0-nightly (2bd5993ca 2018-10-02) x86_64-pc-windows-msvc+Thin LTOIterate over a
ArrayViewis incredible slow than slice.But
for looponArrayViewas fast as toget_uncheckedonslice.Maybe a bug?