topology.conf(5)

NAME

   topology.conf  -  Slurm  configuration  file  for  defining the network
   topology

DESCRIPTION

   topology.conf is an ASCII file which describes  the  cluster's  network
   topology  for optimized job resource allocation.  The file location can
   be modified at system build time using the DEFAULT_SLURM_CONF parameter
   or  at  execution  time by setting the SLURM_CONF environment variable.
   The file will always be located in the same directory as the slurm.conf
   file.

   Parameter  names are case insensitive.  Any text following a "#" in the
   configuration file is treated as a comment  through  the  end  of  that
   line.   Changes  to  the configuration file take effect upon restart of
   Slurm daemons, daemon receipt of the SIGHUP signal, or execution of the
   command "scontrol reconfigure" unless otherwise noted.

   The  network topology configuration one one line defining a switch name
   and its children, either node names or switch names.  Slurm's  hostlist
   expression  parser  is  used,  so the node and switch names need not be
   consecutive         (e.g.         "Nodes=tux[0-3,12,18-20]"         and
   "Switches=s[0-2,4-8,12]"  will parse fine).  An optional link speed may
   also be specified.

   The topology.conf file for an Infiniband switch  can  be  automatically
   generated      using      the     ib2slurm     tool     found     here:
   <https://github.com/fintler/ib2slurm>.

   The overall configuration parameters available include:

   SwitchName
          The name of a  switch.  This  name  is  internal  to  Slurm  and
          arbitrary.   Each  switch should have a unique name.  This field
          must be specified.

   Switches
          Child switches of the named switch.  Either this option  or  the
          Nodes option must be specified.

   Nodes  Child Nodes of the named leaf switch.  Either this option or the
          Switches option must be specified.

   LinkSpeed
          An  optional  value   specifying   the   performance   of   this
          communication  link.   The  units  used  are  arbitrary and this
          information is currently not used.  It may be used in the future
          to optimize resource allocations.

EXAMPLE

   ##################################################################
   # Slurm's network topology configuration file for use with the
   # topology/tree plugin
   ##################################################################
   SwitchName=s0 Nodes=dev[0-5]
   SwitchName=s1 Nodes=dev[6-11]
   SwitchName=s2 Nodes=dev[12-17]
   SwitchName=s3 Switches=s[0-2]

COPYING

   Copyright  (C)  2009 Lawrence Livermore National Security.  Produced at
   Lawrence Livermore National Laboratory (cf, DISCLAIMER).
   Copyright (C) 2010-2013 SchedMD LLC.

   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)

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