AMPSUBZ parameter: Difference between revisions
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<p>On a z/OS system, <var class="product">Model 204</var> zIIP support enables you to offload <var class="product">Model 204</var> work from regular processors to zIIP processors.</p> | <p>On a z/OS system, <var class="product">Model 204</var> zIIP support enables you to offload <var class="product">Model 204</var> work from regular processors to zIIP processors.</p> | ||
<p>AMPSUBZ specifies the number of active zIIP subtasks.</p> | <p>AMPSUBZ specifies the number of active zIIP subtasks.</p> | ||
<p class="note"><b>Note:</b> MP subtasks and zIIP subtasks may be used together. Therefore, AMPSUBS, NMPSUBS, AMPSUBZ and NMPSUBZ may all be greater than zero. However, to avoid unnecessary overhead: </p> | <p class="note"><b>Note:</b> MP subtasks and zIIP subtasks may be used together. Therefore, <var>[[AMPSUBS_parameter|AMPSUBS]]</var>, <var>[[NMPSUBS_parameter|NMPSUBS]]</var>, AMPSUBZ and <var>[[NMPSUBZ_parameter|NMPSUBZ]]</var> may all be greater than zero. However, to avoid unnecessary overhead: </p> | ||
<ul> | <ul> | ||
<li> | <li> | ||
Revision as of 14:55, 9 October 2014
Number of active zIIP eligible subtasks
Summary
- Default value
- None
- Parameter type
- System
- Where set
- On User 0's parameter line or reset by system manager
- Related products
- All
- Introduced
- Model 204 V7.4
Description
Applies to z/OS only
On a z/OS system, Model 204 zIIP support enables you to offload Model 204 work from regular processors to zIIP processors.
AMPSUBZ specifies the number of active zIIP subtasks.
Note: MP subtasks and zIIP subtasks may be used together. Therefore, AMPSUBS, NMPSUBS, AMPSUBZ and NMPSUBZ may all be greater than zero. However, to avoid unnecessary overhead:
- Do not set AMPSUBS greater than the number of central processors actually available.
- Do not set AMPSUBZ greater than the number of zIIP processors actually available.
For more information about zIIP processing, refer to the Rocket Model 204 System Manager's Guide.