Joined: 27 Jun 2008
|Posted: Thu Mar 21, 2013 2:30 pm Post subject: OpenMPI 32- and 64-bit
I'm running ~amd64 Gentoo cluster and users are demanding not only 64-bit, but 32-bit openmpi.
Is it possible to install them at once?
Looks like it is, because e.g. scientific linux 6.4 ships both i686 and x86_64 versions in their x86_64 distribution.
So now the question is: how? There is no abi_x86_32 port of virtual/mpi right now.
I do not care about all MPI implementations right now, but I desperately need it for openmpi.
Looks like I have to do this on my own and to file a bugreport with my solution, though mine may be not so universal.
Hmm, sys-cluster/empi is a good start. It allows to use any mpi implementations from the science overlay on the single system.
Now all that is needed to be done is to install all 32-bit libraries/tools needed for openmpi on mpich2 build. Not an easy job, of course.
Per aspera ad astra!