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- From: rabel@netcom.com (Robert Abeles)
- Subject: Re: Dynamically adding a CPU to MVS/ESA under VM/ESA
- Message-ID: <1992Nov16.184553.20027@netcom.com>
- Organization: Netcom - Online Communication Services (408 241-9760 guest)
- References: <921116.113433.CET.REICHETZ@AWIIMC12.IMC.UniVie.AC.AT>
- Date: Mon, 16 Nov 1992 18:45:53 GMT
- Lines: 25
-
- Christian.J.Reichetzeder@AWIIMC12.IMC.UNIVIE.AC.AT writes:
-
- >On Sat, 14 Nov 92 11:42:31 EST Gary Buhrmaster said:
- >>>Dennis Caffi <ASMIDCC@VM7CG.HQ.AF.MIL> said:
- >>> Is is possible to define another CPU to the MVS virtual machine and
- >>> have MVS/ESA see it and bring it online ? We are running VM/ESA 1.0
- >>Theoritically you should have no problem although you will have to
- >>issue a 'CONFIG CPU(n),ONLINE' command to MVS, but theory may not be
- >>sufficient. [...]
- >I played with it on my test system (MVS 3.1) and it looks like you can't use
- >what's not there at IPL time. This is true for CPUs as well as vectors. Once
- >the thing is there at IPL you can play all sorts of games.
- >Christian
- As an earlier poster guessed, the reason for this is that MVS issues a
- "READ SCP INFO" SERVC only during initialization. When you define the
- additional CPU with the CP DEF command, subsequent "READ SCP INFO" SERVCs
- do in fact show the updated config. However, MVS never expects a change
- like this to occur, so it never again issues the "READ SCP INFO". If you
- want to give IBM a thrill, open a problem with the support center, go to
- level 2, and insist that they APAR it. Good luck.
-
- --
- --------------------------------------
- - Bob Abeles, rabel@netcom.com -
- --------------------------------------
-