On 11/23/2011 10:11 AM, Lukas Razik wrote:
Nuts!!! Ok I am going to have to think about this a little more.
Do you have the ability to configure and remake your ompi install?
I might want to have you add some stuff to help me track this down
some more if you can recompile your ompi.
TERRY DONTJE <email@example.com> wrote:
Can you try running the benchmark with coalescing off? To do that
add the following option to your mpirun line "-mca
I've tried this:
# /usr/mpi/gcc/openmpi-1.4.4/bin/mpirun -np 2
--mca btl_openib_use_message_coalescing 0
--mca btl_base_verbose 50
--mca btl_openib_verbose 1
And that's the result (which isn't different from the run without "--mca btl_openib_use_message_coalescing 0"):
Note, tomorrow and Friday are holiday's here in the U.S. so I won't
probably get to responding to any email until Monday after today.
Terry D. Dontje | Principal
Engineering | +1.781.442.2631
95 Network Drive, Burlington, MA 01803