Subject: Re: [OMPI users] 50% performance reduction due to OpenMPI v 1.3.2forcing all MPI traffic over Ethernet instead of using Infiniband
From: Noam Bernstein (noam.bernstein_at_[hidden])
Date: 2009-06-24 11:18:09
On Jun 24, 2009, at 11:05 AM, Jim Kress wrote:
> Noam, Gus and List,
>
> Did you statically link your openmpi when you built it? If you did
> (the
> default is NOT to do this) then that could explain the discrepancy.
Not explicitly:
env CC=gcc CXX=g++ F77=ifort FC=ifort ./configure --prefix=/share/apps/
mpi/openmpi-$VER/intel-11.0.083 --with-sge
Noam