I have a purely parallel job that runs ~100 processes. Each process has ~identical overhead so the speed of the program is dominated by the slowest processor.
For this reason, I would like to restrict the job to a specific set of identical (fast) processors on our cluster. I read the FAQ on -hosts and -hostfile, but it is still unclear to me what affect these directives will have in a queuing environment. Currently, I submit the job using the "qsub" command in the "sge" environment as : qsub -pe mpich 101 jobfile.job where jobfile contains the command mpirun -np 101 -nolocal ./executable I would like to restrict the job to nodes compute-5-1 to compute-5-32 on our machine, each containing 8 cpu's (slots). How do I go about this? Thanks, Erik -- Erik Nelson Howard Hughes Medical Institute 6001 Forest Park Blvd., Room ND10.124 Dallas, Texas 75235-9050 p : 214 645 5981 f : 214 645 5948