Jack,
note that support for THREAD_MULTIPLE is available in [newer] versions of open
MPI, but disabled by default. You have to enable it by configuring, in 1.6:
--enable-mpi-thread-multiple
Enable MPI_THREAD_MULTIPLE support (default:
Jeff Squyres cisco.com> writes:
>
> On Oct 31, 2007, at 9:52 PM, Neeraj Chourasia wrote:
>
> > but the program is running on TCP interconnect with same
> > datasize and also on IB with small datasize say 1MB. So i dont
> > think problem is in OpenMPI, it has to do something with IB
On Oct 31, 2007, at 9:52 PM, Neeraj Chourasia wrote:
but the program is running on TCP interconnect with same
datasize and also on IB with small datasize say 1MB. So i dont
think problem is in OpenMPI, it has to do something with IB logic,
which probably doesnt work well with threads.
