Multiprocessor Server Class using 25% of Processor

Message boards : Number crunching : Multiprocessor Server Class using 25% of Processor

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Profile jaxom1
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Message 17841 - Posted: 6 Jun 2006, 20:10:53 UTC

I am new. So bear with me.
I have a couple of Duel Proc Server Class machines I installed boinc/rosetta on. They are both only using 25% of their processor. I ran a CPU benchmark, and one of them downloaded more work, and it is running 50% on the processor. They are 3.4Ghz Xeon with 3+GB of RAM.

My question is this. How do I am them do more work? They are servers, I would like them to do 100%. The old SETI, I would just start 4 clients. Is there any setting to make them work harder?

Thanks..

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Ethan
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Message 17844 - Posted: 6 Jun 2006, 20:19:32 UTC - in response to Message 17841.  
Last modified: 6 Jun 2006, 20:20:48 UTC

Since Xeon's are hythreaded, maxing out 1 'cpu' only shows up as 25% in your system. If you're running at 50%, then you're maxing out two of the logical processors. In actuality, you're using almost all of your cpu resources. While hyperthreading makes your system look like a quad, it still is a 2 cpu system. I'd suggest leaving your settings how they are now. . running 4 WU's at once will give you 100% CPU, but you may run into memory bandwidth problems and actually do less work overall.

If you would like to give it a shot and see how it performs, go to your account settings (off the main page on the left hand side), and change your preferences to allow up to 4 cpus. After a couple hours the changes should take effect.

Cheers,
Ethan
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Message 17854 - Posted: 6 Jun 2006, 22:14:21 UTC

good to have you join us John!

as Ethan says, Task Manager may show 50% utilisation, but in reality on a hyperthreaded CPU such as yours, it's running pretty much flat out.


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Message 17856 - Posted: 6 Jun 2006, 22:27:34 UTC

Welcome aboard, John. I have pretty much the same systems as you, and can help you if you like. YAHOO ID = endokr0n25 - MSN = endonet25@hotmail.com

Team EndoNet
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Message 17891 - Posted: 7 Jun 2006, 5:54:23 UTC

Got it on the hyperthreading VS Preferences. Makes perfect sense.
I will leave it set to two.

Thanks for the help on such a "newbie" issue.

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Message boards : Number crunching : Multiprocessor Server Class using 25% of Processor



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