/me facepalms... IEAOPT00 is there, but there's no OPT=00 line in IEASYS00... duh. I had thought that OPT=00 would be the default. And no, the SDSF SYSP panel doesn't show an OPT value.
OK, now that I've gotten my dumb mistake out fo the way for the week... On Mon, Feb 2, 2026 at 4:04 PM Paul Feller < [email protected]> wrote: > I want to think that the wait completion option was drop from z/OS so if > you > are running say z/OS 3.1 I don't think that should be an issue. Please > someone correct me if I'm wrong. > > I think you could use the SYSP panel in SDSF to display what parms got used > at IPL time. I would verify that you actually used IEAOPT00. > > I would have thought that you should have seen some type of IWM message > (good or bad) at IPL time. > > Before I retired, I helped setup the use of SHOWMVS (SHOWzOS) during the > IPL process. I think the process was to run the program (started task) > from > automation as a last step during the IPL process. The output was put into > a > dataset (GDG) so we had a record of what was done during the IPL. We kept > “X” generations depending on how frequently an lpar was IPLed. > > Paul > > -----Original Message----- > From: IBM Mainframe Discussion List <[email protected]> On Behalf > Of > Jay Maynard > Sent: Monday, February 2, 2026 12:38 PM > To: [email protected] > Subject: Re: MT_ZIIP_MODE=2 at IPL? > > Nope, no IWM067I messages at all. I do have HIPERDISPATCH enabled. What's > WAITCOMPLETION? > > On Mon, Feb 2, 2026 at 11:40 AM allan winston < > [email protected] > <mailto:[email protected]> > wrote: > > > By any chance is the IWM067I message being displayed? > > > > Some reasons that the mode 2 is not being honored, per that message, are: > > HIPERDISPATCH FUNCTION IS NOT ACTIVE > > WAITCOMPLETION=YES IS SET > > > > Allan Winston > > > > > > On Mon, Feb 2, 2026 at 9:33 AM Jay Maynard < > > [email protected] > <mailto:[email protected]> > wrote: > > > > > We've enabled MT_ZIIP_MODE=2 on our systems. At yesterday morning's > > > production LPAR IPL, I expected it to take effect; it's in IEAOPT00, > > > with PROCVIEW=CORE in LOADxx. > > > > > > Instead, we had the zIIP multithreading mode equal to 1 after the > > > IPL, according to D M=CPU. Issuing SET OPT=00 changed the mode > > > without having > > to > > > do anything else. > > > > > > Am I missing something? > > > -- > > > Jay Maynard > > > > > > -------------------------------------------------------------------- > > > -- For IBM-MAIN subscribe / signoff / archive access instructions, > > > send email to [email protected] > <mailto:[email protected]> with the message: INFO > > > IBM-MAIN > > > > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, send > > email to [email protected] <mailto:[email protected]> > with > the message: INFO IBM-MAIN > > > > > -- > Jay Maynard > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email > to [email protected] <mailto:[email protected]> with the > message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > -- Jay Maynard ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
