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NAME
pbs_resources_aix4 - pbs Resources on IBM AIX 4
DESCRIPTION
This page summarizes the resources supported by PBS for IBM systems running AIX version 4.
These resources are specified for jobs 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.
mem Maximum amount of physical memory (workingset) used by the job. Units: size.
vmem Maximum amount of virtual memory used by all concurrent processes in 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.
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_irix5(7B), pbs_resources_sp2(7B), pbs_resources_sunos4(7B),
pbs_resources_unicos8(7B)