Hi, I'm referring to ipoib.
I'm using Intel mpi. But we have openmpi too. But per default Intel MPI is used. intel mpi is configured with "shm:ofa". Regards, Guillaume Le 07/12/2010 16:21, Mike Heinz a écrit : > When you say "connected mode" you referring to ipoib or your MPI > configuration? You really don't want to use ipoib for HPC applications. What > MPI are you using? > > For MPI - my personal experience is that OpenMPI is sometimes more reliable > but Mvapich-1 offers the best performance. > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of giggzounet > Sent: Tuesday, December 07, 2010 9:01 AM > To: [email protected] > Subject: [ewg] Need help for Infiniband optimisation for our cluster (MTU...) > > Hi, > > I'm new on this list. We have in our laboratory a little cluster: > - master 8 cores > - 8 nodes with 12 cores > - DDR infiniband switch Mellanox MTS3600R > > On these machines we have an oscar cluster with CentOS 5.5. We have > installed the ofed packages 1.5.1. The default config for the infiniband > is used. So infiniband is running in connected mode. > > Our cluster is used to solve CFD (Computational Fluid Dynamics) > problems. And I'm trying to optimize the infiniband network and so I > have several questions: > > - Is it the right mailing list to ask ? (if not...where should I post ?) > > - Is there a how-to on infiniband optimisation ? > > - CFD computations need a lot of bandwidth. There are a lot of data > exchange through MPI (we are using intel mpi). Has the infiniband mode > (connected or datagram) influence in this case ? What is the "best" MTU > for those computation ? > > > Best regards, > Guillaume > > _______________________________________________ > ewg mailing list > [email protected] > http://lists.openfabrics.org/cgi-bin/mailman/listinfo/ewg _______________________________________________ ewg mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/ewg
