If you can, 1.3 would certainly be a good step to take. I'm not sure
why 1.2.5 would be behaving this way, though, so it may indeed be
something in the application (perhaps in the info key being passed to
us?) that is the root cause.
Still, if it isn't too much trouble, moving to 1.3 will provide you
with a better platform for dynamic process management regardless.
Ralph
On Jan 21, 2009, at 11:30 AM, Evgeniy Gromov wrote:
Dear Ralph,
Thanks for your reply.
I encountered this problem using openmpi-1.2.5,
on a Opteron cluster with Myrinet-mx. I tried for
compilation of Global Arrays different compilers
(gfortran, intel, pathscale), the result is the same.
As I mentioned in the previous message GA itself works
fine, but the application which uses it doesn't work
correctly if it runs on several nodes. If it runs on
one node with several cores everything is fine. So I
thought that the problem might be in this additional
process.
Should I try to use the latest 1.3 version of openmpi?
Best,
Evgeniy
Ralph Castain wrote:
Not that I've seen. What version of OMPI are you using, and on what
type of machine/environment?
On Jan 21, 2009, at 11:02 AM, Evgeniy Gromov wrote:
Dear OpenMPI users,
I have the following (problem) related to OpenMPI:
I have recently compiled with OPenMPI the new (4-1)
Global Arrays package using ARMCI_NETWORK=MPI-SPAWN,
which implies the use of dynamic process management
realised in MPI2. It got compiled and tested successfully.
However when it is spawning on different nodes (machine) one
additional process on each node appears, i.e. if nodes=2:ppn=2
then on each node there are 3 running processes. In the case
when it runs just on one pc with a few cores (let say
nodes=1:ppn=4),
the number of processes exactly equals the number of cpus (ppn)
requested and there is no additional process.
I am wondering whether it is normal behavior. Thanks!
Best regards,
Evgeniy
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--
_______________________________________
Dr. Evgeniy Gromov
Theoretische Chemie
Physikalisch-Chemisches Institut
Im Neuenheimer Feld 229
D-69120 Heidelberg
Germany
Telefon: +49/(0)6221/545263
Fax: +49/(0)6221/545221
E-mail: evge...@pci.uni-heidelberg.de
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