mpiexec.slurm - Run an MPI program under Slurm
mpiexec.slurm args executable pgmargs
where args are comannd line arguments for mpiexec (see below),
executable is the name of the eecutable and pgmargs are command line
arguments for the executable. For example the following command will run the
MPI program a.out on 4 processes:
mpiexec.slurm -n 4 a.out
mpiexec.slurm supports the following options:
[-n nprocs]
[-host hostname]
[-verbose]
[-nostdin]
[-allstdin]
[-nostdout]
[-pernode]
[-config config_file]
[-help|-?]
[-man]
- -n <np>
- Specify the number of processes to use
- -host hostname
- Name of host on which to run processes
- -verbose
- Increase the verbosity of mpiexec.slurm informational messages. Multiple
-verbose's will further increase mpiexec.slurm's verbosity. By default
only errors will be displayed.
- -nostdin
- Do not connect the standard input stream of process 0 to the mpiexec
process. If the process attempts to read from stdin, it will see an
end-of-file.
- -allstdin
- Send the standard input stream of mpiexec.slurm to all processes. Each
character typed to mpiexec (or read from a file) is duplicated numproc
times, and sent to each process. This permits every process to read, for
example, configuration information from the input stream.
- -nostdout
- Do not connect the standard output and error streams of each process back
to the mpiexec.slurm process. Standard output and error will be
respectively writte in files of the form job.ojobid and job.ejobid for
batch jobs, and directly to the controlling terminal for interactive
jobs.
- -pernode
- Allocate only one process per compute node. For SMP nodes, only one
processor will be allocated a job. This flag is used to implement multiple
level parallelism with MPI between nodes, and threads within a node,
assmuming the code is set up to do that.
- -config
<config_file>
- Process executable and arguments are specified in the given configuration
file. This flag permits the use of heterogeneous jobs using multiple
executables. No executable is given on the command line when using the
-config flag. If config_file is "-", then the configuration is
read from standard input. In this case the flag -nostdin is mandatory, as
it is not possible to separate the contents of the configuration file from
process input. The config_file can contain lines beginning with
"#", that are considered comments and ignored and and one or
more lines with the following format:
-n XX : executable [args]
where XX is the number of processes to be used, executable is
the name of the program to run and args are its arguments. For
example:
# Sample mpiexec config file
# Launch two instance of foo
-n 2 : foo
# and three instances of bar
-n 3 bar
There is no support for hostname task layout in a config file
at the moment.
- -help|-?
- Display a brief help page