dmtcp_launch man page

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, --coord-host hostname (environment variable DMTCP_COORD_HOST)

Hostname where dmtcp_coordinator is run (default: localhost)

-p, --coord-port port (environment variable DMTCP_COORD_PORT)

Port where dmtcp_coordinator is run (default: 7779)

--port-file filename

File to write listener port number.  (Useful with --coord-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 --coord-port, or with environment variable DMTCP_COORD_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)

--ckpt-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@$HOST or /tmp/dmtcp-$USER@$HOST)

-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.

Reporting Bugs

Report bugs to:
DMTCP home page: <>

See Also

dmtcp(1), dmtcp_coordinator(1), dmtcp_launch(1), dmtcp_restart(1), dmtcp_command(1)


See /usr/share/doc/dmtcp-2.4.0-rc4/AUTHORS.


DMTCP version 2.4.0-rc4 of March 2014.

Referenced By

dmtcp_command(1), dmtcp_coordinator(1), dmtcp_restart(1).

March 2014 Distributed MultiThreaded CheckPointing