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NAME

       pbs_resources_unicosmk2 - pbs resources under Unicos MK2

DESCRIPTION

       This page summarizes the resources and special features supported by PBS for Cray Research
       computers running Unicos MK version 2.  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.  Root processes are
              not limited, see limit(2).  Units: time.

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

       mppe   The  number  of  processing  elements  used by a single process in the job.  Units:
              unitary.

       mppt   Maximum amount of wall clock time used on the MPP in the job.  Units: time.

       mta, mtb, mtc, ..., mth
              Maximum number of magnetic tape drives required in the corresponding  device  class
              of a, b, c, ..., h.  Units: unitary.

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

       pncpus Maximum  number  of  processors  used  by  any  single  process in the job.  Units:
              unitary.

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

       pf     Maximum number of file system blocks that can be used by all process  in  the  job.
              Units: size.

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

       pmppt  Maximum amount of wall clock time used on the MPP by a single process in  the  job.
              Units: time.

       ppf    Maximum  number  of  file system blocks that can be used by a single process in the
              job.  Units: size.

       procs  Maximum number of processes in the job.  Units: unitary.

       psds   Maximum number of data blocks on the SDS (secondary data storage) for  any  process
              in the job.

       sds    Maximum number of data blocks on the SDS (secondary data storage) for the job.

       srfs_tmp
              Session Reservable File System (SRFS) space in TMPDIR.  Note, SRFS is not supported
              by Cray.  Units: size.

       srfs_wrk
              SRFS space in WRKDIR.  Units: size.

       srfs_big
              SRFS space in BIGDIR.  Units: size.

       srfs_fast
              SRFS space in FASTDIR.  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,pcput=20:00,file=50gb,mem=15mb,mta=2 script
       qalter -lcput=30:00,pmem=8mb 123.jobid
       qsub -lsrfs_tmp=50mb,srfs_big=2gw script

       or in a qsub script as directives:

       #PBS -l cput=1:00:00,pcput=20:00,file=50gb,mem=15mb,mta=2
       #PBS -lsrfs_tmp=50mb,srfs_big=2gw

SPECIAL FEATURES

       Cray  Unicos  MK supports checkpoint and restart.   Any description of checkpoint features
       in PBS are applicable to Unicos MK.

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_irix5(7B)           pbs_resources_sp2(7B),
       pbs_resources_sunos4(7B)