Hi all,
I am currently working on a multi-threaded hybrid parallel simulation
which uses both pthreads and OpenMPI. The simulation uses several
pthreads per MPI node.
My code uses the nonblocking routines MPI_Isend/MPI_Irecv/MPI_Waitany
quite successfully to implement the node-to-node communicat
communication somewhat pointless.
Cheers,
Pedro
On Thu, 2011-10-20 at 10:42 +0100, Pedro Gonnet wrote:
> Hi all,
>
> I am currently working on a multi-threaded hybrid parallel simulation
> which uses both pthreads and OpenMPI. The simulation uses several
> pthreads per MPI node.
>
of "usleep" in line 146 should be long enough
for all the nodes to have started exchanging data but small enough so
that they are not done yet.
Cheers,
Pedro
On Thu, 2011-10-20 at 11:25 +0100, Pedro Gonnet wrote:
> Short update:
>
> I just installed version 1.4.4 from source
vel of
> MPI_THREAD_MULTIPLE instead of MPI_INIT. This sets up internal locking
> in Open MPI to protect against multiple threads inside the progress
> engine, etc.
> Be aware that only some of Open MPI's transports are THREAD_MULTIPLE
> safe -- see the README for more detail.
> On Oct 23, 2
