[OMPI users] SpMV Benchmarks

Hi, I'm hoping someone can help me locate a SpMV benchmark that runs w/ Open MPI so I can benchmark how my systems are interacting with the network as I add nodes / cores to the pool of systems. I can find SpMV benchmarks for single processor / OpenMP all over, but these networked ones are

[OMPI users] Prioritization of --mca btl openib,tcp,self

This is a follow-up to an earlier question, I'm trying to understand how --mca btl prioritizes it's choice for connectivity. Going back to my original network, there are actually two networks running around. A point to point Infiniband network that looks like this (with two fabrics): A(port

Re: [OMPI users] Multiple Subnet MPI Fail

> > --td > > On 11/22/2010 09:28 AM, Paul Monday (Parallel Scientific) wrote: >> >> We've been using OpenMPI in a switched environment with success, but we've >> moved to a point to point environment to do some work. Some of the nodes >> cann

[OMPI users] Multiple Subnet MPI Fail

We've been using OpenMPI in a switched environment with success, but we've moved to a point to point environment to do some work. Some of the nodes cannot talk directly to one another, sort of like this with computers A,B, C with A having two ports: A(1)(opensm)-->B A(2)(opensm)-->C