1 May 2002
gfmpirun_p4 1 Gfarm
gfmpirun_p4 run Gfarm parallel programs with mpirun
`gfmpirun_p4` options command args

## DESCRIPTION

`gfmpirun_p4` executes a parallel command on filesystem nodes with mpirun provided by MPICH/p4, which is determined by the `-G` option, the `-H` option, or the `-N` option.

`-G`, `-H`, and `-N` options are exclusive. When none of `-G`, `-H`, and `-N` options are not specified, `gfmpirun_p4` schedules filesystem nodes by the file-affinity scheduling using the first existent Gfarm file in the argument list args.

Command can be specified by a gfarm-URL that is registered using gfreg(1).

## OPTIONS

`-G` gfarm-URL

  specifies a Gfarm file gfarm-URL for file-affinity scheduling.

`-H` hostfile

  specifies a hostfile that lists filesystem nodes.

  if ``-'' is specified, standard input is used to read the host list.

`-N` np

  specifies the number of nodes np, which are selected by the increasing order of load average.

## BUGS

`gfmpirun_p4` can only work with the MPICH/p4.

## SEE ALSO

gfrun 1