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Date: Tue, 21 Oct 2014 20:03:27 +0200
From: Marco Atzeri <marco DOT atzeri AT gmail DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: Tester for openblas needed
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On 10/21/2014 6:59 PM, Achim Gratz wrote:
> Marco Atzeri writes:
>> Use "make NUM_THREADS=n " to support n threads. "
>
> Wait, what?
>
>> So how many THREADS would you like to see ?
>
> It should determine the number of cores at runtime as well as the level
> of SSE/AVX support: i686 starts with the PentiumPro, which didn't have
> SSE.  Fixing this at compile time is nice for local builds, but no good
> for packages.

Hi Achim,
feel free to require the feature upstream.
https://github.com/xianyi/OpenBLAS/issues

Building with NUM_THREADS=n should provide in the mean time
the maximum available.

The variable OPENBLAS_NUM_THREADS=m should allow to less than the 
maximum.

> Regards,
> Achim.

building rev -2 with  NUM_THREADS=16

Marco

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