topic Re: Disabling cores on BL495c in BladeSystem - General

Disabling cores on BL495c

Rob Buxton — Mon, 07 Mar 2011 23:51:45 GMT

Hi All,
I've found the following item for the BL495c G5 / G6 that covers off how to disable cores in a BL495c.
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=115&prodSeriesId=3782978&prodTypeId=3709945&objectID=c01989569

All good except the option for me is completely different.
I get to an item "Processor Core Disable" and rather than being able to selectively disable cores I'm left with just two options, Disable Half, Enable All.
I actually want to disable all but one.
As far as I can see I am on the latest BIOS.

Is this document wrong?

Re: Disabling cores on BL495c

Jan Soska — Tue, 08 Mar 2011 12:37:22 GMT

Hello Rob,
there is problem at your site, I've just tested our bl495cG6, bios A14 12/09/2009, core selector is at: Advanced Options - Processor Options - AMD COre Select (Per Node).

do you have latest bios in place?

Jan

Re: Disabling cores on BL495c

Rob Buxton — Tue, 08 Mar 2011 19:49:49 GMT

Thanks,
The BIOS is listed as A14 (12/09/2009).
I've just tried powering off / removing the Blade. That's made things worse as now I cannot connect to it as it's reporting the ILO is unresponsive.
Think this is a job for HP Engineering!

Re: Disabling cores on BL495c

Jan Soska — Tue, 08 Mar 2011 19:55:51 GMT

pretty strange, let us know

Jan

Re: Disabling cores on BL495c

Rob Buxton — Tue, 08 Mar 2011 20:04:46 GMT

Jan,
Maybe the ILO BIOS got corrupted, I did do a full FW upgrade. Not sure what state the BIOS on the ILO was in, but I don't think it was the latest.
We're running the Quad Core G5's but the notes I see indicate the BIOS is the same for both G5's and G6's.
Anyway a call has been logged so we'll see what comes back.
Rob.

Re: Disabling cores on BL495c

Rob Buxton — Thu, 10 Mar 2011 02:29:45 GMT

Disable cores option is different between the 2300 series and the 2400 series. With teh 2300's you can only disable half the cores.
Now need to see if I can replace 2300's with 2400's on this MB.

Re: Disabling cores on BL495c

Jan Soska — Thu, 10 Mar 2011 08:42:18 GMT

Ah, interesting...

in my opinion, you can change cpu without problem - bios is the same, mobo is the same, we did it on older generation bl685cG1-G5

jan