, 2010 11:29 AM
To: Open MPI Users
Cc: Stern, Craig J
Subject: EXTERNAL: [OMPI users] Open MPI vs IBM MPI performance help
OpenMPI version: 1.4.3
Platform: IBM P5, 32 processors, 256 GB memory, Symmetric
Multi-Threading (SMT) enabled
Application: starts up 48 processes and does MPI using MPI_Barrier
Collecting MPI Profile information might help narrow down the issue. You
could use some of the tools mentioned here -
http://www.open-mpi.org/faq/?category=perftools
--Nysal
On Wed, Dec 1, 2010 at 11:59 PM, Price, Brian M (N-KCI) <
brian.m.pr...@lmco.com> wrote:
> OpenMPI version: 1.4.3
>
>
J
Subject: EXTERNAL: [OMPI users] Open MPI vs IBM MPI performance help
OpenMPI version: 1.4.3
Platform: IBM P5, 32 processors, 256 GB memory, Symmetric Multi-Threading (SMT)
enabled
Application: starts up 48 processes and does MPI using MPI_Barrier, MPI_Get,
MPI_Put (lots of transfers, large
: users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] On Behalf
Of Price, Brian M (N-KCI)
Sent: Wednesday, December 01, 2010 11:29 AM
To: Open MPI Users
Cc: Stern, Craig J
Subject: EXTERNAL: [OMPI users] Open MPI vs IBM MPI performance help
OpenMPI version: 1.4.3
Platform: IBM P5, 32
OpenMPI version: 1.4.3
Platform: IBM P5, 32 processors, 256 GB memory, Symmetric Multi-Threading (SMT)
enabled
Application: starts up 48 processes and does MPI using MPI_Barrier, MPI_Get,
MPI_Put (lots of transfers, large amounts of data)
Issue: When implemented using Open MPI vs. IBM's MPI
