work_queue_worker - worker process for executing tasks dispatched through Work Queue


*work_queue_worker [options] *

*work_queue_worker [options] *

*work_queue_worker [options] "*"

*work_queue_worker [options] -M *


work_queue_worker is the worker process for executing tasks dispatched from a manager application built using the Work Queue API. work_queue_worker connects to the manager application, accepts, runs, and returns tasks dispatched to it.

The managerhost and port arguments specify the hostname and port number of the manager application for work_queue_worker to connect. Several managerhosts and ports may be specified, separated with a semicolon (;), with the worker connecting to any of the managers specified (When specifying multiple managers, remember to escape the ; from shell interpretation, for example, using quotes.)

Alternatevely, the manager may be specified by name, using the -M option.

work_queue_worker can be run locally or deployed remotely on any of the grid or cloud computing environments such as SGE, PBS, SLURM, and HTCondor using sge_submit_workers(1), pbs_submit_workers(1), slurm_submit_workers(), and condor_submit_workers(1) respectively.


  • -v Show version string.
  • -h Show this help message.
  • -N ---M Set the name of the project this worker should work for. A worker can have multiple projects.
  • -C --catalog Set catalog server to . Format: HOSTNAME:PORT
  • -d --debug Enable debugging for the given subsystem. Try -d all as a start.
  • -o --debug-file Write debugging output to this file. By default, debugging is sent to stderr (":stderr"). You may specify logs to be sent to stdout (":stdout") instead.
  • --debug-max-rotate bytes Set the maximum file size of the debug log. If the log exceeds this size, it is renamed to "filename.old" and a new logfile is opened. (default=10M. 0 disables)
  • --debug-release-reset Debug file will be closed, renamed, and a new one opened after being released from a manager.
  • --foreman Enable foreman mode.
  • -f --foreman-name Set the project name of this foreman to . Implies --foreman.
  • --foreman-port port[:highport] Set the port for the foreman to listen on. If is specified the port is chosen from between and . Implies --foreman.
  • -Z --foreman-port-file Select port to listen to at random and write to this file. Implies --foreman.
  • -F --fast-abort Set the fast abort multiplier for foreman (default=disabled).
  • --specify-log logfile Send statistics about foreman to this file.
  • -P --password Password file for authenticating to the manager.
  • -t --timeout Abort after this amount of idle time. (default=900s)
  • --parent-death Exit if parent process dies.
  • -w --tcp-window-size Set TCP window size.
  • -i --min-backoff Set initial value for backoff interval when worker fails to connect to a manager. (default=1s)
  • -b --max-backoff Set maxmimum value for backoff interval when worker fails to connect to a manager. (default=60s)
  • -A --arch Set the architecture string the worker reports to its supervisor. (default=the value reported by uname)
  • -O --os Set the operating system string the worker reports to its supervisor. (default=the value reported by uname)
  • -s --workdir Set the location where the worker should create its working directory. (default=/tmp)
  • --bandwidth mbps Set the maximum bandwidth the foreman will consume in Mbps. (default=unlimited)
  • --cores n Set the number of cores this worker should use. Set it to 0 to have the worker use all of the available resources. (default=1)
  • --gpus n Set the number of GPUs this worker should use. (default=0)
  • --memory mb Manually set the amount of memory (in MB) reported by this worker.
  • --disk mb Manually set the amount of disk space (in MB) reported by this worker.
  • --wall-time s Set the maximum number of seconds the worker may be active.
  • --feature feature Specifies a user-defined feature the worker provides (option can be repeated).
  • --volatility chance Set the percent chance per minute that the worker will shut down (simulates worker failures, for testing only).


work_queue_worker can also be run in foreman mode, in which it connects to a manager as a worker while acting as a manager itself. Any tasks the foreman receives from its manager are sent to its subordinate worker processes.

Foreman mode is enabled by either specifying a port to listen on using the -f option or by setting the mode directly with the --foreman option. The foreman can be directed to advertise its presence on the catalog_server() with the -N flag, which other workers can use to contact the foreman.


On success, returns zero. On failure, returns non-zero.


To run work_queue_worker to join a specific manager process running on host port 9123:

% work_queue_worker 9123

To run work_queue_worker in auto mode with debugging turned on for all subsystems and to accept tasks only from a manager application with project name set to project_A:

% work_queue_worker -a -d all -M project_A

To run work_queue_worker as a foreman working for project_A and advertising itself as foreman_A1 while listening on port 9123:

% work_queue_worker --foreman -M project_A -N foreman_A1 -f 9123

The Cooperative Computing Tools are Copyright (C) 2005-2019 The University of Notre Dame. This software is distributed under the GNU General Public License. See the file COPYING for details.


CCTools 8.0.0 DEVELOPMENT released on