OpenVMS Cluster Systems - OpenVMS Systems - HP

Setting Up and Managing Cluster Queues
7.9 Setting Up Execution Batch Queues
7.9.2 Batch Command Format
You create a batch queue with a unique name by specifying the DCL command
INITIALIZE/QUEUE/BATCH in the following format:
INITIALIZE/QUEUE/BATCH/ON=node::[/START][/NAME_OF_MANAGER=name-of-manager] queuename
Qualifier Description
/ON Specifies the computer on which the batch queue runs.
/START Starts the queue.
/NAME_OF_MANAGER Specifies the name of the queue manager if you are running
multiple queue managers.
7.9.3 Autostart Command Format
You can initialize and start an autostart batch queue by specifying the DCL
command INITIALIZE/QUEUE/BATCH. Use the following command format:
INITIALIZE/QUEUE/BATCH/AUTOSTART_ON=node::queue-name
When you use the /AUTOSTART_ON qualifier, you must initially activate
the queue for autostart, either by specifying the /START qualifier with the
INITIALIZE/QUEUE command or by entering a START/QUEUE command.
However, the queue cannot begin processing jobs until the ENABLE AUTOSTART
/QUEUES command is entered for a node on which the queue can run.
Rule: Generic queues cannot be autostart queues. Note that you cannot specify
both /ON and /AUTOSTART_ON.
7.9.4 Examples
The following commands make the local batch queue assignments for JUPITR,
SATURN, and URANUS shown in Figure 7–4:
$ INITIALIZE/QUEUE/BATCH/ON=JUPITR::/START/NAME_OF_MANAGER=BATCH_QUEUE JUPITR_BATCH
$ INITIALIZE/QUEUE/BATCH/ON=SATURN::/START/NAME_OF_MANAGER=BATCH_QUEUE SATURN_BATCH
$ INITIALIZE/QUEUE/BATCH/ON=URANUS::/START/NAME_OF_MANAGER=BATCH_QUEUE URANUS_BATCH
Because batch jobs on each OpenVMS Cluster computer are queued to
SYS$BATCH by default, you should consider defining a logical name to establish
this queue as a clusterwide generic batch queue that distributes batch job
processing throughout the cluster (see Example 7–2). Note, however, that you
should do this only if you have a common-environment cluster.
7.10 Setting Up Clusterwide Generic Batch Queues
In an OpenVMS Cluster system, you can distribute batch processing among
computers to balance the use of processing resources. You can achieve this
workload distribution by assigning local batch queues to one or more clusterwide
generic batch queues. These generic batch queues control batch processing across
the cluster by placing batch jobs in assigned batch queues that are available. You
can create a clusterwide generic batch queue as shown in Example 7–2.
A clusterwide generic batch queue needs to be initialized and started only
once. The most efficient way to perform these operations is to create a common
command procedure that is executed by each OpenVMS Cluster computer (see
Example 7–2).
7–10 Setting Up and Managing Cluster Queues