pbs_resources_unicos(7B)						PBS						  pbs_resources_unicos(7B)

NAME

       pbs_resources_unicos - pbs resources under Unicos

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 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 val-
		 ues 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  properi-
		   ties 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  cer-
		 tain 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	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)

Local															  pbs_resources_unicos(7B)