mpiexec is used to initiate MPI jobs.
How do you specify the machines on which your program will be run?
The simplest way is to call vsched -m to produce a file called machines,
which consists of a list of the machines your batch job has allocated.
vsched -machines
Next start up the mpds on each machine. Use the -f flag to specify the complete
path to the machines file.
mpdboot -n 2 -f $HOME/machines
Use mpiexec to run the parallel job.
run executable: mpiexec -n 2 myexe
or
run script: mpiexec -n 2 myscript
Options
-n (or -np) specifies the number of tasks to run
-wdir specifies the working directory to be used by the MPI processes. It is only necessary if your current directory
and desired working directory are not the same
-l labels standard out and standard error (stdout and stderr) with
the rank of the process
For more options: type man mpiexec or mpiexec
at a prompt.
