Hi Don,

I concur with Sam.  Scheduling work as an Enclave SRB is necessary, but
not sufficient.  You must also use an IBM licensed API to define/manage
the Enclave's zIIP eligibility.  The API is part of the materials that IBM
may license to ISVs.

More to the point of your question... As part of our zIIP-enablement R&D
we compared the cost of: (a) frequently starting Enclave SRBs, and (b)
using a "persistent" Enclave SRB in conjunction with MVS Suspend/Resume
services.  We actually ended up using both techniques in our product
(although in different situations).

Russ Teubner
HostBridge

-----Original Message-----
From: Sam Siegel [mailto:s...@pscsi.net]
Sent: Tuesday, October 16, 2012 9:15 AM
Subject: Re: Using zIIP engine

Don - contact IBM partner world.  You need to sign a license and
confidentiality agreement to obtain documentation needed to run on a zIIP.
License is only available to ISV devs.  ,ot to in-house commercial cust.
Sam
------Original Message------
From: Donald Likens
Sender: IBM Mainframe Discussion List
To: IBM-MAIN@LISTSERV.UA.EDU
ReplyTo: IBM Mainframe Discussion List
Subject: Using zIIP engine
Sent: Oct 16, 2012 7:09 AM

I am upgrading my product to use the zIIP engine. It is my understanding
that to do this I must schedule an enclave SRB. I am confused here. WLM is
involved and there seems to be more to this. Can anyone explain? My only
purpose in using the zIIP is to reduce the GP CPU usage, so I plan on
issuing a dependent enclave SRB and wait for it to finish. Does anyone
have any gotchas to share?

I know this is contrary to SRB designed but would it be more efficient to
have one preemptable SRB running forever and use wait and post to control
or simply schedule the SRB and wait for it to complete?

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