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Improve small-ish matrices #10

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cbouilla opened this issue Sep 17, 2021 · 2 comments
Open

Improve small-ish matrices #10

cbouilla opened this issue Sep 17, 2021 · 2 comments
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@cbouilla
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@malb said: Our performance for * 64x64 times 64x1, * 64x64 times 64x64 and * Nx64 times 64x64 matrix multiplication is embarrassingly bad. We must improve performance here, probably by using code by Emmanuel Thomé who worked on these dimensions quite a bit.
@cbouilla
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matops.txt

The attached file matops.c contains a variety of matrix multiplication routines by Emmanuel Thomé. Many of these routines do considerably better than we do. The file says LGPL but we have permission from the author to re-license what we need as GPL.

@cbouilla
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We should also look at CADO-NFS (linear algebra step), where there might be more up-to-date code.

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