Re: preferred MPI: openmpi or mpich?

[Michael Banck <mbanck@debian.org>]

Hi,

On Fri, Jul 07, 2017 at 06:07:25PM +0800, Drew Parsons wrote:
> On Fri, 2017-07-07 at 11:47 +0200, Michael Banck wrote:
> >  
> > There's http://packages.debian.org/src:mpi-testsuite which is
> > basically
> > the MPICH testsuite, but OpenMPI runs on it as well.  The idea was to
> > see how the various implementation work on the various architectures.
> 
> mpi-testsuite currently reports
> 
> $ grep "^ok" /usr/share/mpi-testsuite/results/mpich/summary.tap | wc
>      28     300    1805
> $ grep "^not ok" /usr/share/mpi-testsuite/results/mpich/summary.tap | wc
>     922    5526   33004
> $ grep "^ok" /usr/share/mpi-testsuite/results/openmpi/summary.tap | wc
>     681    3565   21965
> $ grep "^not ok" /usr/share/mpi-testsuite/results/openmpi/summary.tap | wc
>     237    1314    8780
> 
> Odd result, that set of "not ok" suggests mpich is the more buggy.

I remember that it was difficult to get the testsuite to run reliablyin
on a buildd/in an sbuild/schroot, so that could be part of the problem.

If I'm going to DebConf, I will try to look into it then, but I am not
sure I will have a lot of time before that.


Michael