#PBS -l select=2:ncpus=36:mpiprocs=1:ompthreads=36 # Request two nodes, each with one MPI task and 36 threads Follow this example: module load intel/19.1.1 mpt/2.25 If you think you might run a particular compiled executable well into the future, we advise that you load specific versions of desired modules to ensure reproducibility. Load all modules that are necessary to run your program at the start of your batch scripts by including a line like this: module load intel mpt Failure to do so may result in the job oversubscribing its nodes, resulting in poor performance or puzzling behavior such as exceeding its wallclock limit. If your code was compiled with a PGI compiler with option -mp.įor a parallel job that does not use OpenMP threads – for a pure MPI job, for example – specify ompthreads=1 in your PBS select statement as shown below.If your code was compiled with the GNU or Intel compiler using the -f openmp option.This is particularly important in a couple of cases:
Specify an ompthreads value in your script to help ensure that any parallel job will run properly. That includes the commands shown for setting TMPDIR in your batch scripts as recommended here: Storing temporary files with TMPDIR. When you use any of these examples, remember to substitute your own job name and project code, and customize the other directives and commands as necessary. – The introduction on this page has been updated to emphasize the importance of loading modules within your batch scripts.
0 kommentar(er)
