I have enabled zIIP in IDMS but DCPROFIL is displaying 0 zIIP Engines. Is there anything else I need to do to anable zIIP in IDMS?

Document ID : KB000012893
Last Modified Date : 14/02/2018
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Question:

I have zIIP processing enabled for IDMS but on the DCPROFIL task I see:

zIIP ENGINES:          0000

Is there anything else I need to do to anable zIIP in IDMS?

Answer:

DCPROFIL will always show the number of zIIP processors available even when zIIP processing is turned off in IDMS. If the number of zIIP processors is 0 it means there are no zIIP processors online. You need to ensure at least one  zIIP processors is online for IDMS to make use of it. To check the status of processors use the z/OS console command: 

DISPLAY M=CPU

This will show  you the status of general and zIIP processors:

General processors online will be marked with a +
zIIP processors online will be marked with a +I
General processors offline will be marked with a -
zIIP processors offline will be marked with a -I

To enable the use of zIIP processors in IDMS you need to specify zIIP=Y in the PARM statement of the JCL when starting IDMS.

You can also use DCMT VARY ZIIP ON/OFF to enable/disable zIIP.

In addition some modules need to be loaded form an APF authorized library. The list of modules is documented in the section titled zIIP Eligibility in https://docops.ca.com/

The easiest way to implement this is to APF authorize the whole CAGJLOAD library. Note that not every load library in the STEPLIB and CDMSLIB need to be authorized. Only the libraries containing the nucleus modules. 

The following PTFs are currently needed in 19.0 to solve problems with zIIP:

RO92366
RO92321
RO85457
RO83713
RO82708
RO80760

Once zIIP processors are online and zIIP is activated in IDMS, DCPROFIL will display:

TAPE: CAGJJ0 OPERATING SYSTEM: z/OS ZIIP=Y 

zIIP ENGINES: 0001

 

Additional Information:

The requirements for using zIIP in IDMS are documented in https://docops.ca.com/  in the section zIIP Exploitation