10.04 LTS has lost 3 of my cpu's!

[Lifeboat]

I have a 4 processor PC with a clean 10.04 LTS 64 bit (desktop) OS newly re-installed on it.

Everything went fine EXCEPT it is seeing only 1 processor. :(

Which is really strange, because it was running on it last week, and saw all 4 processors. (I tried to update to 10.10, and then to 11.04 and 11.10 (clean) -- which was a big mistake that I will not be repeating any time soon).

What can I do to have 10.04 LTS see my other 3 processors? (I tried re-installing 10.10 and it had the same problem, so I did a clean re-install of 10.04 LTS.)

Thanks for you help!

[2F4U]

Can you be more precise? What are your hardware specs and what makes you think that it recogizes only one processor? If you talk about four processors, do you mean "cores" or actually processors?

[sudodus]

If you download htop (an improved top) and run it, how many processors can it see?



1 [|| 2.6%] Tasks: 252 total, 1 running
2 [|| 2.6%] Load average: 1.72 0.57 0.29
Mem[||||||||||||||||| 458/1886MB] Uptime: 00:25:35
Swp[ 0/9538MB]

PID USER PRI NI VIRT RES SHR S CPU% MEM% TIME+ Command
2507 sudo 20 0 6428 3672 1560 S 0.0 0.2 0:00.19 bash
2487 sudo 20 0 2600 1352 984 R 1.0 0.1 0:02.59 htop
2469 sudo 20 0 460M 83596 27984 S 0.0 4.3 0:00.00 /usr/lib/thunderbi
2468 sudo 20 0 460M 83596 27984 S 0.0 4.3 0:00.00 /usr/lib/thunderbi
2444 sudo 20 0 150M 36564 26292 S 0.0 1.9 0:12.03 /usr/bin/nspluginv
2427 sudo 20 0 41396 9516 7036 S 0.0 0.5 0:00.04 kdeinit4: kio_http
2426 sudo 20 0 41524 9544 7032 S 0.0 0.5 0:00.04 kdeinit4: kio_http
2425 sudo 20 0 41528 9456 6988 S 0.0 0.5 0:00.03 kdeinit4: kio_http
2424 sudo 20 0 41528 9568 7036 S 0.0 0.5 0:00.04 kdeinit4: kio_http
2423 sudo 20 0 41512 9476 7016 S 0.0 0.5 0:00.03 kdeinit4: kio_http
2379 sudo 20 0 50452 14908 11152 S 0.0 0.8 0:00.00 gnome-terminal --g
2378 sudo 20 0 6428 3672 1560 S 0.0 0.2 0:00.21 bash
2377 sudo 20 0 1984 712 580 S 0.0 0.0 0:00.00 gnome-pty-helper
2376 sudo 20 0 50452 14908 11152 S 0.0 0.8 0:01.44 gnome-terminal --g
2370 root 30 10 1768 444 380 S 0.0 0.0 0:00.00 sleep 1424
2349 root 30 10 1828 548 456 S 0.0 0.0 0:00.00 /bin/sh /etc/cron.
2343 root 30 10 1752 500 424 S 0.0 0.0 0:00.00 run-parts --report
F1Help F2Setup F3SearchF4InvertF5Tree F6SortByF7Nice -F8Nice +F9Kill F10Quit

The red text is describing the cpu core load, in this case for 2 cpus. So you should have 4 lines, each one describing its cpu load. What does htop show on your computer?

[sudodus]

Please post the output of
uname -a which can help making sure your version of Ubuntu can manage several cpu cores, and the output of
gksudo "lshw -class cpu" that should show the cpu hardware explicitly.

[Lifeboat]

Can you be more precise? What are your hardware specs and what makes you think that it recogizes only one processor? If you talk about four processors, do you mean "cores" or actually processors?

cpu's are 4 AMD Opteron 6272. Each 6272 has 16 cores, for a total of 64 cores.

mobo is a Supermicro four socket H8QCLi-F

This is a Folding@Home dedicated system, and when you start up the F@Home client, it should show this:



64 cores detected


--- Opening Log file [March 11 09:38:51 UTC]


# Linux SMP Console Edition #
################################################## ###################

Folding@Home Client Version 6.34

http://folding.stanford.edu

################################################## ###################


Instead it was showing 16 cores detected, and the rate of work was FAR below meeting the minimum time needed. (It folds special and very BIG work units).

10.04 LTS Desktop (64 bit), can handle this number of cores - it had previously been doing it just fine - for two months. It's a popular OS for this brand and model of mobo, across several folding teams.



glibtop: This machine has 64 CPUs, 32 are being monitored.


It has only 4 cpu's, but 64 cores, and Desktop Ubuntu will monitor up to 32 of them. (The server version will monitor all of them, but it gives you no gui - and I can't swing Linux without a gui AND a terminal for CLI.

I went back into the BIOS for the 5th time, and found PowerNow was turned on - and I shut it off. The next time I booted up, it saw all the processors and cores.

Although I posted this not long ago, I've been fighting with it for several hours (and before that, fighting to get FahMon (a monitoring program for Folding@Home), working).

So I REALLY appreciate your time and input, and I'll keep that little command line handy, in case I need it in the future.

Thank you gentlemen!

Adak (aka Lifeboat)

[jonnyboysmithy]

Could you please mark the thread as solved?