Having spoken to someone who knows what he is talking about, the Power 6 has power management logic in it to 'turn off' unused parts of the processor. The z/10 shares parts of its design from the Power processors, so it would not surprise me that it does 'power down' the unused processors or parts of them. I will attempt to get a more complete answer over the weekend.
Chris Blaicher Phone: 512-340-6154 Mobile: 512-627-3803 -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Jousma, David Sent: Friday, February 05, 2010 9:10 AM To: [email protected] Subject: Re: z9 / z10 hardware question - unused CPs While I have not actual knowledge, I suspect that all processors on an installed MCM are powered up. Reason being is dynamic sparing if an individual processor fails, etc. Maybe someone from IBM will speak up, but probably not. _________________________________________________________________ Dave Jousma Assistant Vice President, Mainframe Services [email protected] 1830 East Paris, Grand Rapids, MI 49546 MD RSCB1G p 616.653.8429 f 616.653.8497 -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Pommier, Rex R. Sent: Friday, February 05, 2010 10:06 AM To: [email protected] Subject: Re: z9 / z10 hardware question - unused CPs John, Not a weird question at all. I have the same question - and unfortunately no answer for it. Rex -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of McKown, John Sent: Friday, February 05, 2010 9:01 AM To: [email protected] Subject: z9 / z10 hardware question - unused CPs This is a weird question (again). But I know that Intel processor can go into a low power state when they are not being used. This is to reduce the power requirements based upon need (and to extend laptop battery time). So I was curious if the CPs, especially the unlicensed / unused, in a z9 or z10 would likewise be in a lower power state? After all, if I cannot use the CP for anything, why should it be using electricity? Just a curiousity. John McKown Systems Engineer IV IT ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html This e-mail transmission contains information that is confidential and may be privileged. It is intended only for the addressee(s) named above. If you receive this e-mail in error, please do not read, copy or disseminate it in any manner. If you are not the intended recipient, any disclosure, copying, distribution or use of the contents of this information is prohibited. Please reply to the message immediately by informing the sender that the message was misdirected. After replying, please erase it from your computer system. Your assistance in correcting this error is appreciated. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
