Re: preferred MPI: openmpi or mpich?
On Fri, 2017-07-07 at 11:47 +0200, Michael Banck wrote:
> Hi,
>
> We (Debichem) also have a few upstreams that claim OpenMPI is more
> buggy
> than MPICH.
Interesting. Can you check in with them to see whether they still
think that's the case, or was that poor experience with older OpenMPI
versions?
>
> On Fri, Jul 07, 2017 at 09:22:52AM +0100, Alastair McKinstry wrote:
> > The bigger question here is : how do we decide between them?
>
> How about we have both, at least for the core linear algebra
> packages,
> like scalapack etc.?
I think that could be a good policy regardless of our choice of Debian
default MPI.
We need to upgrade scalapack, so it's a good time to make that kind of
packaging change. We already have libscalapack-openmpi1. We'd rename
libscalapack-mpi-dev as libscalapack-openmpi-dev and make
libscalapack-mpi-dev a dummy package that depends on it (or on the mpi-
default version). Then alongside we'd create libscalapack-mpich-dev
and libscalapack-mpich1
Drew
Reply to: