slurmctld(8)

NAME

   slurmctld - The central management daemon of Slurm.

SYNOPSIS

   slurmctld [OPTIONS...]

DESCRIPTION

   slurmctld  is  the  central management daemon of Slurm. It monitors all
   other Slurm daemons and resources, accepts work (jobs),  and  allocates
   resources to those jobs. Given the critical functionality of slurmctld,
   there may be a backup server to assume these  functions  in  the  event
   that the primary server fails.

   OPTIONS

   -B     Do  not  recover  state  of  BlueGene  blocks  when running on a
          bluegene system.

   -c     Clear all previous slurmctld state  from  its  last  checkpoint.
          With  this  option, all jobs, including both running and queued,
          and all node states, will  be  deleted.   Without  this  option,
          previously  running jobs will be preserved along with node State
          of DOWN, DRAINED and DRAINING nodes and  the  associated  Reason
          field  for those nodes.  NOTE: It is rare you would ever want to
          use this in production as all jobs will be killed.

   -D     Debug mode. Execute slurmctld in the foreground with logging  to
          stdout.

   -f <file>
          Read configuration from the specified file. See NOTES below.

   -h     Help; print a brief summary of command options.

   -L <file>
          Write log messages to the specified file.

   -n <value>
          Set  the daemon's nice value to the specified value, typically a
          negative number.

   -r     Recover partial  state  from  last  checkpoint:  jobs  and  node
          DOWN/DRAIN  state  and  reason  information state.  No partition
          state is recovered.  This is the default action.

   -R     Recover  full  state  from  last  checkpoint:  jobs,  node,  and
          partition  state.   Without this option, previously running jobs
          will be preserved along with node State  of  DOWN,  DRAINED  and
          DRAINING  nodes and the associated Reason field for those nodes.
          No other node or partition state will be preserved.

   -v     Verbose operation. Multiple -v's increase verbosity.

   -V     Print version information and exit.

ENVIRONMENT VARIABLES

   The following environment variables can be used  to  override  settings
   compiled into slurmctld.

   SLURM_CONF          The  location of the Slurm configuration file. This
                       is overridden by explicitly naming a  configuration
                       file on the command line.

CORE FILE LOCATION

   If  slurmctld  is started with the -D option then the core file will be
   written   to   the   current   working   directory.     Otherwise    if
   SlurmctldLogFile  is  a  fully  qualified  path  name  (starting with a
   slash), the core file will be written to the same directory as the  log
   file,  provided  SlurmUser  has  write  permission  on  the  directory.
   Otherwise the core file will be written to  the  StateSaveLocation,  or
   "/var/tmp/"  as  a  last  resort. If none of the above directories have
   write permission for SlurmUser, no core file  will  be  produced.   The
   command  "scontrol abort" can be used to abort the slurmctld daemon and
   generate a core file.

NOTES

   It may be  useful  to  experiment  with  different  slurmctld  specific
   configuration  parameters  using  a  distinct  configuration file (e.g.
   timeouts).  However, this special configuration file will not  be  used
   by  the  slurmd  daemon  or the Slurm programs, unless you specifically
   tell each of them to use  it.  If  you  desire  changing  communication
   ports,  the  location of the temporary file system, or other parameters
   used by other Slurm components, change the common  configuration  file,
   slurm.conf.

COPYING

   Copyright  (C)  2002-2007  The Regents of the University of California.
   Copyright (C) 2008-2010 Lawrence Livermore National Security.  Produced
   at   Lawrence   Livermore   National   Laboratory   (cf,   DISCLAIMER).
   CODE-OCEC-09-009. All rights reserved.

   This file is  part  of  Slurm,  a  resource  management  program.   For
   details, see <http://slurm.schedmd.com/>.

   Slurm  is free software; you can redistribute it and/or modify it under
   the terms of the GNU General Public License as published  by  the  Free
   Software  Foundation;  either  version  2  of  the License, or (at your
   option) any later version.

   Slurm is distributed in the hope that it will be  useful,  but  WITHOUT
   ANY  WARRANTY;  without even the implied warranty of MERCHANTABILITY or
   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General  Public  License
   for more details.

SEE ALSO

   slurm.conf(5), slurmd(8)

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