Should work just fine. If it finds IB libraries on the machines that don’t have IB hardware, you might see a warning that it couldn’t find an IB NIC (not sure, but I think it might).
No configuration tweaks should be required. > On Mar 16, 2015, at 3:59 AM, Pablo Escobar Lopez > <pablo.escobarlo...@unibas.ch> wrote: > > Hi all, > > I am planning to upgrade my software stack and now I will have machines > without infiniband and machines with infiniband, I would like to share the > same software stack across all those machines if possible. > > I am thinking about trying to compile openmpi with infiniband support (I > would compile openmpi in one of the machine connected to the infiniband > network) and then use this openmpi version also in the non infiniband > machines. I am expecting that when using this version of openmpi with > infiniband support enabled in a non-infiniband machine openmpi will detect > this and will fallback to use ethernet. > > Am I expecting correctly or this won't work? Does anyone has experience with > this scenario? In case this is possible, is there any > configuration/compilation tweaks required when building openmpi for this to > work? > > thanks in advance for any help. > regards, > Pablo. > > -- > Pablo Escobar López > HPC systems engineer > Biozentrum, University of Basel > Swiss Institute of Bioinformatics SIB > Email: pablo.escobarlo...@unibas.ch <mailto:pablo.escobarlo...@unibas.ch> > Phone: +41 61 267 21 80 > http://www.biozentrum.unibas.ch <http://www.biozentrum.unibas.ch/> > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: > http://www.open-mpi.org/community/lists/users/2015/03/26476.php
