Bug#895748: Default MPI

[Michael Banck]

Hi,

On Mon, Apr 16, 2018 at 04:42:31PM +0800, Drew Parsons wrote:
> On Mon, 2018-04-16 at 08:27 +0100, Alastair McKinstry wrote:
> > > Now that mpich builds on all arches, it could be a good opportunity
> > > to 
> > > review and discuss whether we want to keep openmpi as the default
> > > default, or whether we want to switch to mpich.
> > > 
> > I'd favour switching over to mpich for all archs for this release.
> > This
> > is because MPICH has the failed image support, OpenMPI hasn't.
> 
> Thanks Alastair. OpenMPI 3 has just arrived in unstable.  Is it still
> the case that openmpi 3 does not provide failed image support?

One thing I could do is upload a new mpi-testsuite package, which tries
to run (the MPICH testsuite mostly, IIRC) for both MPICH and OpenMPI;
that might give some input on how good/bad they are on the various
arches.


Michael