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Subject: [bug#27850] gnu: mpi: openmpi: Don't enable thread-multiple
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From: ludovic.courtes@inria.fr (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
References: <87wp6thqjc.fsf@i-ulialbion.it.manchester.ac.uk>
	<87379c4oxs.fsf@gnu.org>
	<87o9s0bhro.fsf@i-ulialbion.it.manchester.ac.uk>
Date: Tue, 01 Aug 2017 11:27:45 +0200
In-Reply-To: <87o9s0bhro.fsf@i-ulialbion.it.manchester.ac.uk> (Dave Love's
	message of "Mon, 31 Jul 2017 19:09:15 +0100")
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To: Dave Love <fx@gnu.org>
Cc: 27850@debbugs.gnu.org

Dave Love <fx@gnu.org> skribis:

> Ludovic Court=C3=A8s <ludovic.courtes@inria.fr> writes:

[...]

>>>      (arguments
>>>       `(#:configure-flags `("--enable-static"
>>>=20=20
>>> -                           "--enable-mpi-thread-multiple"
>>
>> Should we upgrade our openmpi package instead of doing this?
>
> I don't know whether they've fixed all the breakage I knew about in
> OMPI 2 or whether there's still any penalty from thread-multiple.  1.10
> seems fairly safe, but I don't have strong opinions if people think 2 is
> solid.  Apart from ABI incompatibility, I assume it has the usual
> incompatibilities at the mpirun/MCA level, and that they aren't well
> documented.

ABI compatibility is normally not an issue with Guix, so I=E2=80=99d be in =
favor
of upgrading to 2.0.3.  Would you like to do it?

Thanks,
Ludo=E2=80=99.