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2.6.20r5 wont detect 2nd processor on U60
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retroman
Apprentice
Apprentice


Joined: 18 Nov 2004
Posts: 207
Location: Stuttgart

PostPosted: Tue May 08, 2007 12:09 pm    Post subject: 2.6.20r5 wont detect 2nd processor on U60 Reply with quote

Hello all,

I built the 2.67.20r5 kernel with SMP support for up to 2 processors just like all of my others, however It will not detect the second processor.



SUN Ultra 60 - 2x 450mhz processor

Any ideas?


thanx

j
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Ferris
Retired Dev
Retired Dev


Joined: 13 Jan 2003
Posts: 426
Location: N. Virginia (USA)

PostPosted: Tue May 08, 2007 12:29 pm    Post subject: Reply with quote

Make sure you have (in .config):
Code:

CONFIG_SMP=y
CONFIG_NR_CPUS=4


(The CPUs in the U60 are numbered 0 and 2) :)

Regards,
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ibtim13
Tux's lil' helper
Tux's lil' helper


Joined: 12 Sep 2003
Posts: 81
Location: Troy, NY

PostPosted: Tue May 08, 2007 5:22 pm    Post subject: Reply with quote

I have to set

CONFIG_NR_CPUS=16 on my E4500 to get it to see all 8 processors. I wondered why that was, now it makes sense. My processors are numbered 0,1,4,5,8,9,14,15.

The only thing that doesn't make sense is why 14 and 15 since the machine only supports 14 cpus, which would be 0-13 if ordered sequentially and fully stocked.
_________________
Grrr, can't think of anything clever right now, I'll go back and edit this later (9/12/2003)
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