SYNOPSIS

mpirun [MPI OPTIONS] ltsmin-reduce-dist [OPTIONS] <input> [<output>]

DESCRIPTION

Using the option --workers=N, this tool starts the command mpirun silently in the background with the suitable options, i.e. -np 4. Alternatively, one may wish to call mpirun with additional options. This can be done using the --mpi option, e.g.:

mpirun -np 4 -mca btl tcp,self {manname} --mpi

OPTIONS

LTS I/O Options

--block-size=BYTES

Size of a block in bytes. Defaults to 32,768.

--cluster-size=BLOCKS

Number of blocks in a cluster. Defaults to 32.

Hybrid Runtime Options

The Hybrid Runtime Environment provides startup options for several parallel architectures.

Posix threads options

If the application supports it and Posix threads are supported by the OS then the following option is available:

--threads[=count]

Start count worker threads. The default count is the number of CPU’s in the system.

Posix processes options

If the application supports it and Posix shared memory is supported by the OS then the following option is available:

--procs[=count]

Fork count worker processes. The default count is the number of CPUs in the system.

Note that MacOS X only supports Posix shared memory from version 10.7 (Lion) onwards.

MPI options

If the application supports it and MPI support was compiled into the binary then the following options are available:

--workers=count

Start the program with count MPI workers.

--mpirun=mpirun arguments

Invoke mpirun with the given arguments.

--mpi

Ignore --workers and --mpirun options and start the MPI runtime.

General Options

-v

Increase the level of verbosity

-q

Be quiet; do not print anything to the terminal.

--debug=file

Enable debugging output for file.

--version

Print version string of this tool.

-h, --help

Print help text

--usage

Print short usage summary.

--stats

Enable statistics gathering/printing.

--where

Include file and line number in debug messages.

--when

Include the wall time since program start in all messages.

SEE ALSO