This section describes the prerequisites required to use an IBM System z Integrated Information Processor (zIIP) under Natural.
zIIP support by Natural requires that zIIP Enabler for Natural (including an extra product license) is installed at your site.
All prerequisites for installation are described in Installing zIIP Enabler for Natural in the Installation for z/OS documentation.
The Natural Com-plete/SMARTS Interface or Natural CICS Interface version installed at your site must support zIIP Enabler for Natural and the prerequisites for installation mentioned earlier must be fulfilled.
The requirements and restrictions described in this section depend on the version of the Natural Com-plete/SMARTS Interface or Natural CICS Interface installed.
The requirements and restrictions that apply when using zIIP Enabler for Natural under Com-plete help optimize runtime performance and reduce the number of SRB/TCB switches to a minimum:
The Natural startup application must be cataloged with the Com-plete ULIB attributes PV (privileged) and AF (OS task affinity) specified. For more information, see the appropriate Com-plete documentation.
The number of threads and tasks for zIIP processing should be increased with the Com-plete startup parameters THREAD-GROUP and TASK-GROUP to prevent Com-plete from dispatching bottlenecks. For more information, see the appropriate Com-plete documentation.
Specify the same number of threads and tasks for each group.