Le 23/12/2012 17:56, William Stein a écrit :
I was at a conference a week ago with a bunch of applied mathematicians
who are extremely experienced in high performance *numerical* computing
(at least compared to me). One strongly suggested we simply dump ATLAS
for OpenBLAS (https://github.com/xianyi/OpenBLAS). OpenBLAS does
not support OS X, but that might be OK, since I don't think we build
ATLAS on OS X anyways.
I'm not for or against the above proposal (yet). But I'm putting it out
there. The argument was that OpenBLAS has significant and broad
developer momentum around it, whereas ATLAS is almost all Clint Whaley's
project, and OpenBLAS is much easier to build. I've not verified any of
these claims. (Both projects are I think BSD licensed.)
I was all for throwing atlas a few days ago ; I have since been in touch
with Clint Whaley (reporting upstream my issues with #10508 [1]), and he
has been extremely reactive and efficient. That has definitely softened
my point of view on the matter.
In any case, the question of atlas vs openblas can only be asked when
sage will be blas-implementation-agnostic ; and that is the point of
this thread, if I don't err.
Snark on #sagemath
PS:
[1]
https://sourceforge.net/tracker/?func=detail&aid=3598167&group_id=23725&atid=379482
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