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.TH pbs_mpilam 8B "23 October 2017" Local "PBS Professional"
.SH NAME
.B pbs_mpilam 
\- run MPI programs under PBS with LAM MPI

.SH SYNOPSIS
.B pbs_mpilam 
[<mpilam options>]

.B pbs_mpilam 
--version

.SH DESCRIPTION
The PBS command 
.B pbs_mpilam 
replaces the standard 
.I mpirun
command in a PBS LAM MPI job.

If used to run a single program, PBS tracks resource usage 
and controls all user processes spawned by the program.
If used to run multiple programs as specified in an application file
(no 
.I <where> 
argument and no 
.I -np/-c 
option), PBS does not manage the spawned user processes of each program.

If the 
.I where 
argument is not specified,
.I pbs_mpilam
will try to run the user's program on all available CPUs
using the 
.I C
keyword.

.B Prerequisites
.br
The PATH on remote machines must contain 
.I PBS_EXEC/bin.

.SH USAGE
Usage is the same as for LAM 
.I mpirun.
All options are passed directly to 
.I mpirun.  

.SH OPTIONS
.IP "<mpilam options>" 8
The 
.B pbs_mpilam 
command uses the same options as 
.I mpirun.

.IP "--version" 8
The 
.B pbs_mpilam
command returns its PBS version information and exits.
This option can only be used alone.

.SH SEE ALSO
The 
.B PBS Professional Administrator's Guide
.LP
mpirun(1)