1pbs_resources_unicos(7B) PBS pbs_resources_unicos(7B)
2
6 pbs_resources_unicos - pbs resources under Unicos
7
9 This page summarizes the resources and special features supported by
10 PBS for Cray Research computers running Unicos versions 8 and 9. These
11 resources are specified by including them in the -l option argument on
12 the qsub or qalter command or in the PBS job script.
13
15 ncpus Maximum number of multitask processes in the job. If this is
16 set the environment variable NCPUS will be set to the given
17 value. Units: unitary.
18 cput Maximum amount of CPU time used by all processes in the job.
20 Root processes are not limited, see limit(2). Units: time.
21 mem Maximum amount of physical memory used by all concurrent pro‐
23 cesses in the job. Units: size.
24 mppe The number of processing elements used by a single process in
26 the job. Units: unitary.
27 mppt Maximum amount of wall clock time used on the MPP in the job.
29 Units: time.
30 mta, mtb, mtc, ..., mth
32 Maximum number of magnetic tape drives required in the corre‐
33 sponding device class of a, b, c, ..., h. Units: unitary.
34 nice The nice value under which the job is to be run. Units: uni‐
36 tary.
37 pncpus Maximum number of processors used by any single process in
39 the job. Units: unitary.
40 pcput Maximum amount of CPU time used by any single process in the
42 job. Units: time.
43 pf Maximum number of file system blocks that can be used by all
45 process in the job. Units: size.
46 pmem Maximum amount of physical memory used by any single process
48 in the job. Units: size.
49 pmppt Maximum amount of wall clock time used on the MPP by a single
51 process in the job. Units: time.
52 ppf Maximum number of file system blocks that can be used by a
54 single process in the job. Units: size.
55 procs Maximum number of processes in the job. Units: unitary.
57 psds Maximum number of data blocks on the SDS (secondary data
59 storage) for any process in the job.
60 sds Maximum number of data blocks on the SDS (secondary data
62 storage) for the job.
63 srfs_tmp Session Reservable File System (SRFS) space in TMPDIR. Note,
65 SRFS is not supported by Cray. Units: size.
66 srfs_wrk SRFS space in WRKDIR. Units: size.
68 srfs_big SRFS space in BIGDIR. Units: size.
70 srfs_fast SRFS space in FASTDIR. Units: size.
72 walltime Maximum amount of real time during which the job can be in
74 the running state. Units: time.
75 arch Specifies the administrator defined system architecture re‐
77 quried. This defaults to whatever the PBS_MACH string is set
78 to in "local.mk". Units: string.
79 host Name of host on which job should be run. This resource is
81 provided for use by the site's scheduling policy. The al‐
82 lowable values and effect on job placement is site dependent.
83 Units: string.
84 nodes Number and/or type of nodes to be reserved for exclusive use
86 by the job. The value is one or more node_specs joined with
87 the '+' character, "node_spec[+node_spec...]. Each node_spec
88 is an number of nodes required of the type declared in the
89 node_spec and a name or one or more property or properties
90 desired for the nodes. The number, the name, and each prop‐
91 erty in the node_spec are separated by a colon ':'. If no
92 number is specified, one (1) is assumed. Units: string.
93 The name of a node is its hostname. The properties of nodes
95 are:
96 . ppn=# specifying the number of processors per node re‐
98 quested. Defaults to 1.
99 . arbitrary string assigned by the system administrator,
101 please check with your administrator as to the node names
102 and properties available to you.
103 Examples:
105 . To ask for 12 nodes of any type: -l nodes=12
107 . To ask for 2 "server" nodes and 14 other nodes (a total of
109 16): -l nodes=2:server+14
110 The above consist of two node_specs "2:server" and "14".
111 . To ask for (a) 1 node that is a "server" and has a "hippi"
113 interface, (b) 10 nodes that are not servers, and (c) 3
114 nodes that have a large amount of memory an have hippi:
115 -l nodes=server:hippi+10:noserver+3:bigmem:hippi
116 . To ask for three nodes by name:
118 -l nodes=b2005+b1803+b1813
119 . To ask for 2 processors on each of four nodes:
121 -l nodes=4:ppn=2
122 . To ask for 4 processors on one node:
124 -l nodes=1:ppn=4
125 . To ask for 2 processors on each of two blue nodes and three
127 processors on one red node:
128 -l nodes=2:blue:ppn=2+red:ppn=3
129 host Allows a user to specify the desired execution location.
131 This resource is provided for use by the site's scheduling
132 policy. The allowable values and effect on job placement is
133 site dependent. Units: string.
134 other Allows a user to specify site specific information. This re‐
136 source is provided for use by the site's scheduling policy.
137 The allowable values and effect on job placement is site de‐
138 pendent. Units: string.
139 software Allows a user to specify software required by the job. This
141 is useful if certain software packages are only available on
142 certain systems in the site. This resource is provided for
143 use by the site's scheduling policy. The allowable values
144 and effect on job placement is site dependent. Units:
145 string.
146
148 qsub -l nodes=15,walltime=2:00:00 script
149 or in a qsub script as a directive:
151 #PBS -l nodes=15,walltime=2:00:00
153 qsub -l cput=1:00:00,pcput=20:00,file=50gb,mem=15mb,mta=2 script
156 qalter -lcput=30:00,pmem=8mb 123.jobid
157 qsub -lsrfs_tmp=50mb,srfs_big=2gw script
158 or in a qsub script as directives:
160 #PBS -l cput=1:00:00,pcput=20:00,file=50gb,mem=15mb,mta=2
162 #PBS -lsrfs_tmp=50mb,srfs_big=2gw
163
165 Cray Unicos supports checkpoint and restart. Any description of
166 checkpoint features in PBS are applicable to Unicos.
167
169 The resource values take the following units:
170 time specifies a maximum time period the resource can be used. Time
172 is expressed in seconds as an integer, or in the form:
173 [[hours:]minutes:]seconds[.milliseconds]
174 size specifies the maximum amount in terms of bytes or words. It is
176 expressed in the form integer[suffix] The suffix is a multi‐
177 plier defined in the following table, The size of a word is the
178 word size on the execution host.
179 b or w bytes or words.
181 kb or kw Kilo (1024) bytes or words.
183 mb or mw Mega (1,048,576) bytes or words.
185 gb or gw Giga (1,073,741,824) bytes or words.
187 unitary The maximum amount of a resource which is expressed as a simple
189 integer.
190
192 the PBS ERS, qsub(1B), qalter(1B), pbs_submit(3B), pbs_alterjob(3B),
193 pbs_statjob(3b) pbs_resources_aix4(7B), pbs_resources_irix5(7B) pbs_re‐
194 sources_sp2(7B), pbs_resources_sunos4(7B)
195Local pbs_resources_unicos(7B)