AMPSUBS parameter: Difference between revisions
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==Description== | ==Description== | ||
<p>The number of active subtasks in a <var class="product">Model 204</var> multiprocessing online configuration (IBM z/OS systems only)</p> | <p>The number of active subtasks in a <var class="product">Model 204</var> multiprocessing online configuration (IBM z/OS systems only)</p> | ||
<p>The value of AMPSUBS must be less than or equal to the value of the NMPSUBS parameter, which determines the number of subtasks attached during initialization. The AMPSUBS parameter allows the system manager to adjust the number of active offload subtasks without bringing down the online.</p> | <p>The value of AMPSUBS must be less than or equal to the value of the <var>[[NMPSUBS_parameter|NMPSUBS]]</var> parameter, which determines the number of subtasks attached during initialization. The AMPSUBS parameter allows the system manager to adjust the number of active offload subtasks without bringing down the online.</p> | ||
<p>If AMPSUBS is less than NMPSUBS, the extra subtasks remain attached but do not perform offloaded work. If AMPSUBS is set to 0, the main task performs all the work and multiprocessing is effectively turned off.</p> | <p>If AMPSUBS is less than NMPSUBS, the extra subtasks remain attached but do not perform offloaded work. If AMPSUBS is set to 0, the main task performs all the work and multiprocessing is effectively turned off.</p> | ||
<p>For more information about tuning MP, refer to the <var class="book">Rocket Model 204 System Manager's Guide</var>. </p> | <p>For more information about tuning MP, refer to the <var class="book">Rocket Model 204 System Manager's Guide</var>. </p> | ||
[[Category:System parameters]] | [[Category:System parameters]] | ||
[[Category:Parameters]] | [[Category:Parameters]] | ||
Revision as of 14:50, 9 October 2014
Number of active offload 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 V6.1 or earlier
Description
The number of active subtasks in a Model 204 multiprocessing online configuration (IBM z/OS systems only)
The value of AMPSUBS must be less than or equal to the value of the NMPSUBS parameter, which determines the number of subtasks attached during initialization. The AMPSUBS parameter allows the system manager to adjust the number of active offload subtasks without bringing down the online.
If AMPSUBS is less than NMPSUBS, the extra subtasks remain attached but do not perform offloaded work. If AMPSUBS is set to 0, the main task performs all the work and multiprocessing is effectively turned off.
For more information about tuning MP, refer to the Rocket Model 204 System Manager's Guide.