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Windows HPC Integration >
   Supported HPC Software >
       Portable Batch System Pro From Altair Engineering >
           PBS qsub Arguments

PBS qsub Arguments

The PBS qsub command has a large number of options for controlling the submission process. This section describes the “-l nodes=value” command line option for use with Ansoft parallel batch jobs.

The nodes option has the following format:

-l nodes=node_spec[+node_spec...][#suffix]

where node_spec is one of the following:

• Host name of the specified node, followed by optional ppn or cpp specifiers.

nodename[:pc_spec[:pc_spec...]]

• Optional number of nodes, followed by optional node properties, followed by optional ppn or cpp specifiers. If the number N is omitted, then the default value of 1 host is used.

[N][:property[:property...]][:pc_spec[:pc_spec...]]

where:

ppn=X : Number of processes (tasks) per node. Default is 1 if not specified.

cpp=Y : Number of CPUs (threads) per process. Default is 1 if not specified.

and where the optional global #suffix, which applies to all hosts, has one of the following values:

#excl : This suffix requests exclusive access to the allocated nodes.

#shared : This suffix requests shared (i.e., non-exclusive) access to the allocated nodes.

• The total number of requested processes is determined by multiplying the sum of the number of nodes times the number of processes per node for each node_spec. In general, this should match the number of distributed engines specified in the Ansoft desktop command-line option, -Machinelist num=num_distributed_engines.

• The number of CPUs per process (cpp) specified in the PBS qsub command line or in the PBS directives in the script file should generally match the number of processors per engine that is specified by the Desktop value, -batchoptions . Both the NumberOfProcessors and the NumberOfProcessorsDistributed should match the PBS cpp value.

See the PBS documentation for a complete list of options for the qsub command and for further information on running multi-node jobs.

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