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    Command:

    pbs_resources_unicos8

    
    
    

    DESCRIPTION

           This  page  summarizes  the resources and special features supported by
           PBS for Cray Research computers running Unicos versions 8 and 9.  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

           ncpus     Maximum number of multitask processes in the job.  If this is
                     set  the  environment variable NCPUS will be set to the given
                     value.  Units: unitary.
    
           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 pro-
                     cesses 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 corre-
                     sponding device class of a, b, c, ..., h.  Units: unitary.
    
           nice      The nice value under which the job is to be run.  Units: uni-
                     tary.
    
           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
           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  depen-
                     dent.  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
    
           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  supports  checkpoint  and  restart.    Any description of
           checkpoint features in PBS are applicable to Unicos.
    
    
    

    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  multi-
                   plier 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
    
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