Download the nightly 1.3 release branch snapshot - not the actual
release, but the nightly tarball:
http://www.open-mpi.org/nightly/v1.3/
It is very close to release quality - only waiting for a couple of
things, none of which would impact this issue.
Let me know how this works for you.
Ralph
On Aug 31, 2009, at 7:25 PM, Tim Miller wrote:
Hi,
Thanks -- I downloaded the latest 1.4 snapshot after I saw your
message and verified that this issue does not seem to occur in it.
However, I ran into other stability issues (not necessarily
surprising for a development snapshot). Is there any idea on when
1.3.4 will be out and if this fix will be migrated in?
Thanks again very much for your help.
Regards,
Tim
On Wed, Aug 26, 2009 at 6:07 PM, Ralph Castain <r...@open-mpi.org>
wrote:
This is a known issue - I'll test to see if it has been fixed for
the upcoming 1.3.4. We know the problem does not exist in our devel
trunk, but I don't know if the fix propagated to the 1.3 branch.
On Aug 26, 2009, at 3:40 PM, Tim Miller wrote:
Hello Everyone,
I have a problem that I can't seem to figure out from searching the
mailing list archive. I have a code that repeatedly spawns (via
MPI_COMM_SPAWN) a group of 8 processes and then waits for them to
finish. The problem is that OpenMPI (I've tried 1.3.1 and 1.3.3)
opens a pipe each time MPI_COMM_SPAWN is called, but this pipe never
gets closed (even if I call MPI_COMM_FREE on both the parent and
child). Therefore, eventually my master process hits the limit of
open file descriptors and cannot spawn any more. I cannot figure out
why this is happening since I am only spawning 8 jobs at a time.
I should note that I don't exchange any data over the child
intercommunicators -- they exist solely so I can call MPI_BARRIER on
them (the spawned processes are programed to call MPI_BARRIER
directly before they call MPI_FINALIZE, thus indicating that they
are done doing their work).
I'd appreciate any suggestions as to what I might be doing wrong
with this that is causing OpenMPI to hold the pipes open.
Thanks,
Tim M.
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