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NAME

       pbs_resources_darwin - pbs resources on Darwin

DESCRIPTION

       This  page  summarizes  the resources supported by PBS for PC workstations running Darwin.
       These resources are specified by including them in the -l option argument on the  qsub  or
       qalter command or in the PBS job script.

RESOURCES

       cput      Maximum amount of CPU time used by all processes in the job.  Units: time.

       file      The  largest  size  of  any  single file that may be created by the job.  Units:
                 size.

       nice      The nice value under which the job is to be run.  Units: unitary.

       pcput     Maximum amount of CPU time used by any single process in the job.  Units: time.

       pmem      Maximum amount of physical memory (workingset) used by any single process of the
                 job.  Units: size.

       pvmem     Maximum  amount of virtual memory used by any single process in the job.  Units:
                 size.

       vmem      Maximum amount of virtual memory used by all concurrent processes  in  the  job.
                 Units: size.

       walltime  Maximum  amount  of  real time during which the job can be in the running state.
                 Units: time.

       arch      Specifies the administrator defined system architecture requried.  This defaults
                 to whatever the PBS_MACH string is set to in "local.mk".  Units: string.

       host      Name  of  host on which job should be run.  This resource is provided for use by
                 the site's scheduling policy.   The allowable values and effect on job placement
                 is site dependent.  Units: string.

       nodes     Number  and/or  type  of nodes to be reserved for exclusive use by the job.  The
                 value  is  one   or   more   node_specs   joined   with   the   '+'   character,
                 "node_spec[+node_spec...].  Each node_spec is an number of nodes required of the
                 type declared in  the  node_spec  and  a  name  or  one  or  more  properity  or
                 properities  desired for the nodes.  The number, the name, and each properity in
                 the node_spec are separated by a colon ':'.  If no number is specified, one  (1)
                 is assumed.  Units: string.

                 The name of a node is its hostname.  The properities of nodes are:

                 . ppn=# specifying the number of processors per node requested.  Defaults to 1.

                 . arbitrary  string assigned by the system administrator, please check with your
                   administrator as to the node names and properities available to you.

                 Examples:

                 . To ask for 12 nodes of any type: -l nodes=12

                 . To  ask  for  2  "server"  nodes  and  14  other  nodes  (a  total   of   16):
                   -l nodes=2:server+14
                   The above consist of two node_specs "2:server" and "14".

                 . To  ask  for (a) 1 node that is a "server" and has a "hippi" interface, (b) 10
                   nodes that are not servers, and (c) 3 nodes that have a large amount of memory
                   an have hippi:
                   -l nodes=server:hippi+10:noserver+3:bigmem:hippi

                 . To ask for three nodes by name:
                   -l nodes=b2005+b1803+b1813

                 . To ask for 2 processors on each of four nodes:
                   -l nodes=4:ppn=2

                 . To ask for 4 processors on one node:
                   -l nodes=1:ppn=4

                 . To  ask for 2 processors on each of two blue nodes and three processors on one
                   red node:
                   -l nodes=2:blue:ppn=2+red:ppn=3

       host      Allows a user to specify the  desired  execution  location.   This  resource  is
                 provided  for  use  by  the  site's scheduling policy.  The allowable values and
                 effect on job placement is site dependent.  Units: string.

       other     Allows a user to specify site specific information.  This resource  is  provided
                 for use by the site's scheduling policy.  The allowable values and effect on job
                 placement is site dependent.  Units: string.

       software  Allows a user to specify software required by  the  job.    This  is  useful  if
                 certain  software  packages  are  only available on certain systems in the site.
                 This resource is  provided  for  use  by  the  site's  scheduling  policy.   The
                 allowable values and effect on job placement is site dependent.  Units: string.

EXAMPLES

       qsub -l nodes=15,walltime=2:00:00 script

       or in a qsub script as a directive:

       #PBS -l nodes=15,walltime=2:00:00

       qsub -l cput=1:00:00,walltime=2:00:00,file=50gb,mem=15mb script
       qalter -lcput=30:00,pmem=8mb 123.jobid

       or in a qsub script as a directive:

       #PBS -l cput=1:00:00,walltime=2:00:00,file=50gb,mem=15mb

RESOURCE UNITS

       The resource values take the following units:

       time    specifies  a  maximum  time period the resource can be used.  Time is expressed in
               seconds as an integer, or in the form:
               [[hours:]minutes:]seconds[.milliseconds]

       size    specifies the maximum amount in terms of bytes or words.  It is expressed  in  the
               form  integer[suffix]  The  suffix is a multiplier defined in the following table,
               The size of a word is the word size on the execution host.

                b or  w    bytes or words.

               kb or kw    Kilo (1024) bytes or words.

               mb or mw    Mega (1,048,576) bytes or words.

               gb or gw    Giga (1,073,741,824) bytes or words.

       unitary The maximum amount of a resource which is expressed as a simple integer.

SEE ALSO

       the PBS  ERS,  qsub(1B),  qalter(1B),  pbs_submit(3B),  pbs_alterjob(3B),  pbs_statjob(3b)
       pbs_resources_aix4(7B),          pbs_resources_sp2(7B),          pbs_resources_sunos4(7B),
       pbs_resources_unicos8(7B)