ZIIP

LOADPLUS uses enclave service request blocks (SRBs) to enable zIIP processing automatically while running jobs. Using zIIP processing can reduce the overall CPU time for LOADPLUS jobs.

When invoking DSNUTILB, LOADPLUS ignores this option.

ENABLED

Specifying ZIIP ENABLED tells LOADPLUS to attempt to offload eligible processing to an available zIIP. If the zIIP is busy or not available, normal processing continues on a general-purpose processor.

To enable and use zIIP processing with LOADPLUS, you must:

• Have an installed authorized version of XBM or SUF
• Have a zIIP available in your environment

• Start and maintain an XBM subsystem in your environment

  Important

  • You can specify a particular XBM subsystem to use by specifying a value for the XBMID installation or command option. For more information, see XBMID.
  • Additional zIIP offload beyond LEVEL1 (new zIIP workload) does not require an XBM subsystem.

For more information, see the following references:

• For XBM or SUF requirements and considerations, see  SUF (also known as XBM) considerations.
• For the steps to follow to enable zIIP processing, see  SUF (also known as XBM) considerations.
• For more information about the XBM component that enables the use of zIIPs, see 

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DISABLED

Specifying ZIIP DISABLED tells LOADPLUS not to use zIIP processing.

LEVEL1

Specifying ZIIP LEVEL1 tells LOADPLUS not to use zIIP offloading for the new zIIP workload.

Specifying the default

You can specify the default for the ZIIP command option in your installation options module by using the ZIIP installation option. LOADPLUS is shipped with a default value of ENABLED for this option. The ZIIP command option overrides the default that is in the installation options module.