--mca mpi_leave_pinned 1
might help. Take a look at the FAQ for various tuning parameters.
Michael Di Domenico wrote:
> I'm not sure I understand what's actually happened here. I'm running
> IMB on an HP superdome, just comparing the PingPong benchmark
> HP-MPI v2.3
> Max ~ 700-800MB/sec
> OpenMPI v1.3
> -mca btl self,sm - Max ~ 125-150MB/sec
> -mca btl self,tcp - Max ~ 500-550MB/sec
> Is this behavior expected? Are there any tunables to get the OpenMPI
> sockets up near HP-MPI?
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