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dmtcp_launch -- start a process under DMTCP control.


dmtcp_launch [OPTIONS] <command> [args...]


dmtcp_command is a tool to send user commands to the dmtcp_coordinator remotely.


Connecting to the DMTCP Coordinator
-h, --host hostname (environment variable DMTCP_HOST)
Hostname where dmtcp_coordinator is run (default: localhost)

-p, --port port (environment variable DMTCP_PORT)
Port where dmtcp_coordinator is run (default: 7779)

--port-file filename
File to write listener port number. (Useful with --port 0, which is used to
assign a random port)

-j, --join
Join an existing coordinator, raise error if one doesn't already exist

Create a new coordinator at the given port. Fail if one already exists on the
given port. The port can be specified with --port, or with environment variable
DMTCP_PORT. If no port is specified, start coordinator at a random port (same as
specifying port '0').

Execute the process in stand-alone coordinator-less mode.
Use dmtcp_command or --interval to request checkpoints.

-i, -interval seconds (environment variable DMTCP_CHECKPOINT_INTERVAL)
Time in seconds between automatic checkpoints. 0 implies never (manual ckpt
only); if not set and no env var, use default value set in dmtcp_coordinator or
dmtcp_command. Not allowed if --join is specified

Checkpoint image generation
--gzip, --no-gzip (environment variable DMTCP_GZIP=[01])
Enable/disable compression of checkpoint images (default: 1 (enabled))
WARNING: gzip adds seconds. Without gzip, ckpt is often < 1s

--ckptdir path (environment variable DMTCP_CHECKPOINT_DIR)
Directory to store checkpoint images (default: curr dir at launch)

Checkpoint open files and restore old working dir. (default: do neither)

Deprecated. Use --ckpt-open-files instead.

--ckpt-signal signum
Signal number used internally by DMTCP for checkpointing (default: 12)

--mtcp-checkpoint-signal signum
Deprecated. Use --ckpt-signal instead.

Enable/disable plugins
--with-plugin plugins (environment variable DMTCP_PLUGIN)
Colon-separated list of DMTCP plugins to be preloaded with DMTCP. (Absolute
pathnames are required.)

--batch-queue, --rm
Enable support for resource managers (Torque PBS and SLURM). (default: disabled)

Enable support for PTRACE system call for gdb/strace etc. (default: disabled)

Update environment variables based on the environment on the restart host (e.g.,
DISPLAY=$DISPLAY). This can be set in a file dmtcp_env.txt. (default: disabled)

--ib, --infiniband
Enable InfiniBand plugin. (default: disabled)

--disable-alloc-plugin (environment variable DMTCP_ALLOC_PLUGIN=[01])
Disable alloc plugin (default: enabled).

--disable-dl-plugin (environment variable DMTCP_DL_PLUGIN=[01])
Disable dl plugin (default: enabled).

--disable-all-plugins (EXPERTS ONLY, FOR DEBUGGING)
Disable all plugins.

Other options
--prefix path
Prefix where DMTCP is installed on remote nodes.

--tmpdir path (environment variable DMTCP_TMPDIR)
Directory to store temporary files (default: $TMDPIR/dmtcp-$USER@$HOST or

-q, --quiet (or set environment variable DMTCP_QUIET = 0, 1, or 2)
Skip NOTE messages; if given twice, also skip WARNINGs

Print this message and exit.

Print version information and exit.


Report bugs to: [email protected]
DMTCP home page: <http://dmtcp.sourceforge.net>

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