Depending upon what version you are using, this could be resolved fairly simply. Check to see if your version supports the "nooversubscribe" command line option. If it does, then setting that option may (I believe) resolve the problem - at the least, it will only allow you to run one application process on each node the allocation you described. If you were to give -np = 2*x, you would get an error and the job would not be run.
Ralph On 8/3/06 7:47 AM, "Martin Schafföner" <martin.schaffoe...@e-technik.uni-magdeburg.de> wrote: > Hi all, I noticed by accident that if I allocate only 1 of 2 CPUs on, say, x > nodes with PBS, it is possible to run mpiexec with -np = 2*x, i.e. I can use > both CPUs on each SMP node. This is not would I would expect or want. I would > guess that this is due to the fact that even if the _one_ orted launched > through PBS' TM interface can launch as many processes as you like which is > not the case if one would launch MPI processes directly through the TM > interface. How can this behavior be fixed? Regards, -- Martin > Schafföner Cognitive Systems Group, Institute of Electronics, Signal > Processing and Communication Technologies, Department of Electrical > Engineering, Otto-von-Guericke University Magdeburg Phone: +49 391 > 6720063 PGP-Public-Key: > http://ca.uni-magdeburg.de/certs/pgp0Cschaffoener64D8BEC0.asc _______________ > ________________________________ users mailing > list us...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/users
