On Wed, Oct 14, 2015 at 1:16 PM, Oscar Benjamin <oscar.j.benja...@gmail.com> wrote:
> Numpy's Windows installer bundles several BLAS binaries with different > levels of SSE and this was the initial reason for not providing Windows > wheels. > indeed -- but IIRC, SSE2 made a pretty big difference, but SSE3 not so much -- though, of course, who knows how fabulously useful some future extension might be... > The problem is being solved though by switching from ATLAS to OpenBLAS > which selects different levels of SSE at runtime. > > Maybe that approach (runtime machine code selection) is the only way to > marry the needs of packaging with the desire to fully utilise CPU > capabilities. It keeps the packaging side simple at the expense of pushing > the complexity onto the project authors. Though it's probably only viable > for something like a BLAS library which would often contain a load of hand > crafted assembly code anyway. > only viable ,and probably only necessary... I'd be really surprised if SSE2 made any notabel difference in regular old python code. -CHB -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception chris.bar...@noaa.gov
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