mpiexec smp runs.

[Amitoj Singh]

Hi,
   We are running OpenPBS 2.3.16 with mpiexec Version 0.74. 
Non-smp jobs run fine. But for smp runs i gather we need to launch a jobs as follows ..

   qsub -l nodes=4:ppn=2 <pbsscript>

  If yes, then we have a problem because we define our nodes as single processor "np=1"  nodes. The reason behind this is that we wish to restrict PBS from trying to launch more than one different process per node. For eg. if job xyz is using 4 nodes then we wish the nodes to be job-exclusive to job xyz. And so the above qsub command fails. 

   We are currently using mpirun to launch jobs at our site. We had changed the mpirun script to launch smp jobs at our site (by editing the file PBS_NODEFILE to have each node appear twice for an smp job), but with mpiexec this seems impossible. Any help in this regard will be much appreciated.

Amitoj Singh,
Fermilab/CD/CCF/FTP
Location : WH 8 East
Phone : (630)-840-5020
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