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Subject: Re: [OMPI users] strange IMB runs
From: Dorian Krause (doriankrause_at_[hidden])
Date: 2009-07-29 13:55:22


Hi,

--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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