Am 20.10.2008 um 14:17 schrieb Pedro G:
On 10/20/08, Reuti <re...@staff.uni-marburg.de> wrote: Hi,
Am 20.10.2008 um 12:18 schrieb Pedro G:
I would like to know if Msc Nastran supports openmpi.
I have been searching in google about Nastran and Openmpi but I
couldn't find if it works or not.
Now I'm using lam/mpi for nastran parallel jobs, but I have some
problems with lam, nastran and sge, so I'd like to upgrade to openmpi.
do you have the source code of the application? If you have only
the binary compiled for LAM, then you can't do anything to change.
You checked the LAM/MPI Howto at the SGE website?
No, I don't have the source code, the application seems to be able
to work with openmpi since it has an option openmpi=yes in the
command line, but I couldn't make it to work. Anyway, I think it is
not fully supported yet since there is nothing about that option in
the user manual
About LAM/MPI I have already read the howto and did a tight
integration. The problem is that Msc Nastran in parallel jobs start
a new lam environment getting out of control of sge.
I contacted with Nastran and they told that was a LAM/MPI or SGE
problem.
No, IMO it's not. When they start a new LAM/MPI environment, they are
violating the granted slot allocation. What about the following
(although it would be more a discussion on the [GE suers] list:
- Suppose you have a tight LAM/MPI integration for other MPI programs.
- In your jobscript, change the $PATH, so that the found "lamboot"
points to e.g. /bin/true - i.e. doing nothing.
- When they then call "mpirun C", they should get the already started
LAM daemons.
- If mpiexec is not working, maybe the found mpiexec must also point
to a script to supply the proper "-np ..." values.
- When they call "mpiexec" in one-shot-mode, it must also be mapped
to a script to execute just the program, but not to do a "lamboot".
-- Reuti
-- Reuti
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