Michael Di Domenico wrote:
mpi_leave_pinned didn't help still at ~145MB/sec
btl_sm_eager_limit from 4096 to 8192 pushes me upto ~212MB/sec, but
pushing it past that doesn't change it anymore
Are there any intelligent programs that can go through and test all
the different permutations of tunables for openmpi? Outside of me
just writing an ugly looping script...
actually there is,
http://svn.open-mpi.org/svn/otpo/trunk/
this tool has been used to tune openib parameter, and I would guess that
it could be used without any modification to also run netpipe over sm...
Thanks
Edgar
On Wed, Jul 29, 2009 at 1:55 PM, Dorian Krause<doriankra...@web.de> wrote:
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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--
Edgar Gabriel
Assistant Professor
Parallel Software Technologies Lab http://pstl.cs.uh.edu
Department of Computer Science University of Houston
Philip G. Hoffman Hall, Room 524 Houston, TX-77204, USA
Tel: +1 (713) 743-3857 Fax: +1 (713) 743-3335
