On Tue, 22 Dec 2020, Carl Friedrich Bolz-Tereick wrote:

That said, I can understand that 5x slower is still a somewhat disappointing result and I suspect given enough effort we could maybe get it down to around 3x slower.

Just to clarify, if I understand you correctly, you mean that by investing some serious effort into optimising those "small" inefficiencies one could improve the situation from 5x to 3x.

However, I wonder if anything could be done on the SIMD front in a rather generic way with a reasonable investment of time but without going the full NumPyPy way, e.g. by doing something special for tight loops performing math on objects with a special layout (lists, arrays)...

--
Sincerely yours,
Yury V. Zaytsev
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