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Re: RFC: building numpy against OpenBLAS.
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From: |
Federico Beffa |
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Subject: |
Re: RFC: building numpy against OpenBLAS. |
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Date: |
Thu, 28 May 2015 08:38:34 +0200 |
On Wed, May 27, 2015 at 5:50 PM, Ricardo Wurmus
<address@hidden> wrote:
>
> Federico Beffa writes:
>
>> Out of curiosity, could you outline how OpenBLAS is optimized for a
>> specific CPU architecture while being compiled on a different CPU (and
>> hence allowing to be substituted)?
>
> The Quick Install instructions[1] say that when OpenBLAS is compiled
> with DYNAMIC_ARCH=1
>
> "All kernel will be included in the library and dynamically switched
> the best architecutre at run time."
>
> It seems that unlike ATLAS, OpenBLAS does not perform any self-tuning
> but relies on hand-optimised code (e.g. by using CPU-specific
> instructions).
Sounds good. Thanks!
Fede