[Bioclusters] problems with AMD Athlon 2000+ MP
Joseph Landman
bioclusters@bioinformatics.org
29 Dec 2002 23:21:07 -0500
Hi Bonnie:
W/o the heat sink compound (I use Arctic Silver III) my 2000+ runs in
the 50->60C range (outside of specs). With the compound and same fan,
it is in the low 40C region. You need good thermal contact for the
cooling. Also, look into heat spreaders (about 25->50 cents) for
athlons. They are small metal templates which help to spread the heat
out (and help with the cooling).
Machines dropping could be due to heat, or bad power (not power
supplies, but overloaded electrical outlets or poor power
conditioning). Try putting the ganglia monitor on with the appropriate
heat sensor running, as well as the voltage sensors.
Also, look into running Memtest86. See http://www.memtest86.org.
One of the better memory testers. I have had more problems with
substandard memory on Athlons than I care to admit. Athlons require
high quality memory, the cheap stuff might or might not work. Memtest86
running w/o errors for a day is a good sign.
Joe
On Sun, 2002-12-29 at 21:49, BHurwitz@twt.com wrote:
> Hi William,
>
> Thank you so much. Our power supply in each node is Lemacs (model
> P1M6400P). I will look into the power supply and see if that might be the
> culprit.
>
> PS. The fans seem to be making good contact with the CPU's. But, we
> haven't tried a heat sink compound yet. Maybe that will be our next step?
>
> -Bonnie
>
>
>
> |---------+------------------------------------>
> | | William Park |
> | | <opengeometry@yahoo.ca> |
> | | Sent by: |
> | | bioclusters-admin@bioinfo|
> | | rmatics.org |
> | | |
> | | |
> | | 12/29/2002 08:26 PM |
> | | Please respond to |
> | | bioclusters |
> | | |
> |---------+------------------------------------>
> >-------------------------------------------------------------------------------------------------------------------------------|
> | |
> | To: bioclusters@bioinformatics.org |
> | cc: |
> | Subject: Re: [Bioclusters] problems with AMD Athlon 2000+ MP |
> >-------------------------------------------------------------------------------------------------------------------------------|
>
>
>
>
> On Sun, Dec 29, 2002 at 08:01:02PM -0600, BHurwitz@twt.com wrote:
> > Hello,
> >
> > We have a 20 CPU cluster which has AMD Athlon 2000+ MP processors. The
> > cluster is relatively new and almost every week we loose one or two nodes
> > due to the processors failing. I think the issue may be heat related, so
> > we tried separating the nodes, increasing the airflow with a fan, and
> > dropping the temp in the server room. None of these attempts have
> helped.
> > We have also tried to replace the fans. Has anyone ever had a similar
> > problem? How did you resolve it? Are pentium III more stable?
> >
> > Thank you in advance!
> > Bonnie
>
> - Check that CPU fan are making good contact with CPU. Use heatsink
> compound, if you have to.
>
> - I think your culprit may be power supply. Good case and power
> supply cannot be over-emphasized. I recommend Antec or Enlight.
>
> - Intel runs a lot cooler. P3 is more stable, but don't have the
> crunching power of AMD 2000+. If you have the money, go for
> quad-Xeon.
>
> --
> William Park, Open Geometry Consulting, <opengeometry@yahoo.ca>
> Linux solution for data management and processing.
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>
> _______________________________________________
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--
Joseph Landman, Ph.D
Scalable Informatics LLC
email: landman@scalableinformatics.com
web: http://scalableinformatics.com
phone: +1 734 612 4615