Open MPI logo

Open MPI Development Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Development mailing list

Subject: Re: [OMPI devel] [BUG?] OpenMPI with openib on SPARC64: Signal: Bus error (10)
From: Lukas Razik (linux_at_[hidden])
Date: 2011-11-23 10:11:46


TERRY DONTJE <terry.dontje_at_[hidden]> wrote:
>Can you try running the benchmark with coalescing off?  To do that
    add the following option to your mpirun line "-mca
    btl_openib_use_message_coalescing 0".

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
  -host cluster1,cluster2
    /usr/mpi/gcc/openmpi-1.4.3/tests/osu_benchmarks-3.1.1/osu_latency

And that's the result (which isn't different from the run without "--mca btl_openib_use_message_coalescing 0"):
http://net.razik.de/linux/T5120/openmpi-1.4.4-verbose_no_coalescing.txt

>thanks,
>

I thank you!

Regards,
Lukas