Thread '3 cpu?'

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paul

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Joined: 21 Mar 09
Posts: 23
United Kingdom
Message 25649 - Posted: 24 Jun 2009, 8:41:01 UTC

I have running boinc for 4 months and I have 2 cpu's so all the time I have 2 running proccesses and the rest waiting to start or ready to run.
I have added freehal@home to my list of projects today and downloaded a project I find for the first time I have 3 running processes.
is this ok as all 3 have there percent increasing although only the original 2 show up on the task manager as using 50% each.
if it is ok is there a way to run 3 all the time
thanks as this has puzzled me today
Paul
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ProfileGundolf Jahn

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Joined: 20 Dec 07
Posts: 1069
Germany
Message 25650 - Posted: 24 Jun 2009, 9:19:49 UTC - in response to Message 25649.  

Do you have a CUDA capable Nvidia graphic card (GPU) in your computer?
If in addition Freehal has a GPU application, that would explain the third process.

Gruß,
Gundolf
Computer sind nicht alles im Leben. (Kleiner Scherz)
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paul

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United Kingdom
Message 25651 - Posted: 24 Jun 2009, 9:31:49 UTC

Hi Jahn

no mine is an intel(r)cor(Tm) 2Cpu 6400 at 213 ghz 2gb of ram
if this makes sense

Paul
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ProfileJord
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Joined: 29 Aug 05
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Netherlands
Message 25652 - Posted: 24 Jun 2009, 9:41:22 UTC

I'm suspecting that FreeHAL is a non-CPU-intensive project:

A 'non-CPU-intensive' project is one whose applications use little CPU time. Examples include:

* Host measurements
* Network measurements
* Web crawling
* Network data access

A non-CPU-intensive project is treated specially by the core client:

* The core client maintains one result for the project
* The core client executes this result whenever computation is enabled, bypassing the normal CPU scheduling mechanism.

A project labels itself as non-CPU-intensive by including the <non_cpu_intensive> flag in its configuration file.

This attribute is at the project level; there is no provision for a project to have some applications that are CPU intensive and some that aren't.

Non-CPU-intensive applications can use chunks CPU time; this won't break anything, and the CPU scheduler will adjust to it by changing its estimates of 'CPU efficiency'. However, non-CPU-intensive applications should try not to use more CPU time than their resource share fraction indicates.

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Nicolas

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Joined: 19 Jan 07
Posts: 1179
Argentina
Message 25732 - Posted: 27 Jun 2009, 3:11:49 UTC - in response to Message 25652.  

I'm suspecting that FreeHAL is a non-CPU-intensive project:

It is, but it shouldn't be. The app doesn't do network activity or anything like that, only CPU. It takes around 6 seconds of CPU time, the developer added intentional delays all over the code to make it use less than 1% CPU and take hours...
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Message boards : Questions and problems : 3 cpu?

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