[Beowulf] lsf mpi job run policy !!!

Ufuk Utku Turuncoglu turuncu at be.itu.edu.tr
Wed Aug 24 08:01:09 PDT 2005


i try to restrict the total cpu count in mpi (parallel) job under LSF 
so, i test the some lsf command combination. For example,

1 ) bsub -n 2 -q workq -o lsf.out mpirun -np 4 ./mpihello.x
job run in 4 cpu incase of 2 which is defined in bsub -n flag (greater 
than job slot).

2 ) bsub -n 2 -q workq -o lsf.out mpijob ./mpihello.x
job run sucessfully in 2 cpu

but in this case the "mpijob" command is used for only MPICH and it is 
not working in sun system. new "mpijob" command must be defined for the 
sun systems (for sun mpi implementation). Is it possible to restrict the 
requested number of cpu (from mpirun or mprun command) without using 
mpijob command? or how can i prevent the usage of the mpirun/mprun 
command(s)? Is it neccecary to define esub script for parallel jobs?

best regards,

Ufuk Utku Turuncoglu
Istanbul Technical University
Informatics Institute

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