I have BOINC 6.6.20, Intel Quad Q6600 CPU, nVidia 8800GTX GPU, Windows 7 RC1, all of my BOINC preferences are max'd (use all CPUs, 100% of the time, etc). However, only one WU runs at any given time and it is indicated as "0.12 CPUs, 1 CUDA". It seems like the least it should be doing is running at one WU on each of the 4 processors.

Any ideas on improving the performance here?

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I have BOINC 6.6.20, Intel Quad Q6600 CPU, nVidia 8800GTX GPU, Windows 7 RC1, all of my BOINC preferences are max'd (use all CPUs, 100% of the time, etc). However, only one WU runs at any given time and it is indicated as "0.12 CPUs, 1 CUDA". It seems like the least it should be doing is running at one WU on each of the 4 processors.

Any ideas on improving the performance here?

What are your settings for:

Suspend work while computer is in use?
Run only the selected applications
If no work for selected applications is available, accept work from other applications?
Use Graphics Processing Unit (GPU) if available
Use Central Processing Unit (CPU)

?

Do you have any other projects attached?

If so, are there other projects using the CPUs?

Do you have any non-CUDA work oh your computer? If not, is BOINC trying to get any in the work fetches?

Do you have a global_prefs_override.xml file? It will be in the same directory as your global_prefs.xml file (which you WILL have). These files will be in your BOINC Data directory. The directory can be found by looking at the first few messages immediately after a restart.



Sorry about all of the questions, but diagnostics can involve a fair amount of information.

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BOINC WIKI

Here is a screenshot of my Boinc Preferences:


...and of my Seti@Home Preferences:


Seti@Home is the only Boinc app I'm running.

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I noticed your prefs state that your default computer location is "Home", but it doesn't show which preferences you've taken a screen shot of. Is that the default preferences or the Home preferences?

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You have disabled AstroPulse (AP) in your preferences and your computer has not connected to Einstein since 23 Jun 2007 15:08:10, so there are probably no CPU tasks in your queue. See JM7's question

Do you have any non-CUDA work oh your computer? If not, is BOINC trying to get any in the work fetches?

From your first post, I conclude that only your GPU has work:

However, only one WU runs at any given time and it is indicated as "0.12 CPUs, 1 CUDA".

So, if you want your CPUs busy, you have to allow downloading work for them, either by enabling AP or by (re)attaching to Einstein or any other (non-CUDA) project.

Gruß,
Gundolf

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Computer sind nicht alles im Leben. (Kleiner Scherz)

SETI@home classic workunits 3,758
SETI@home classic CPU time 66,520 hours

I have about 260 (give or take) tasks "Ready to start." All are "Seti@Home Enhanced 6.08 (cuda)."

My Home, work, and default preferences are all the same...at least as far as there are 1:1 settings that can be the same. Seti@Home is given 1000 as the resource share in all 3 places.

I want my system busy running Seti@Home...that's why the other things are turned off. ...or are you saying that only 1 CUDA WU can run at any given time?

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...or are you saying that only 1 CUDA WU can run at any given time?

Yes and no. Yes, only one WU can be run per GPU. That means: no, if you had more than one GPU, more than one CUDA task could run. ;-)

If you should decide to give work to your CPUs (by enabling AP or Einstein), you should also consider to set your Computing preferences to

On multiprocessors, use at most 75 % of the processors

to avoid slowing down the data feeding of your GPU.

Gruß,
Gundolf

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Computer sind nicht alles im Leben. (Kleiner Scherz)

SETI@home classic workunits 3,758
SETI@home classic CPU time 66,520 hours

...or are you saying that only 1 CUDA WU can run at any given time?

Yes and no. Yes, only one WU can be run per GPU. That means: no, if you had more than one GPU, more than one CUDA task could run. ;-)

If you should decide to give work to your CPUs (by enabling AP or Einstein), you should also consider to set your Computing preferences to

On multiprocessors, use at most 75 % of the processors

to avoid slowing down the data feeding of your GPU.

Gruß,
Gundolf

You do not need to set the % of processors. 75% of 2 is 1 processor as the result has to be an integer.

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BOINC WIKI

You do not need to set the % of processors. 75% of 2 is 1 processor as the result has to be an integer.

??? {DvT}Hex's computer shows

CPU type GenuineIntel 
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz [Intel64 Family 6 Model 15 Stepping 11] 
Number of processors 4

So, 75% would be 3, with 1 reserved for feeding the GPU.

You do not need to set the % of processors. 75% of 2 is 1 processor as the result has to be an integer.

??? {DvT}Hex's computer shows

CPU type GenuineIntel 
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz [Intel64 Family 6 Model 15 Stepping 11] 
Number of processors 4

So, 75% would be 3, with 1 reserved for feeding the GPU.

You still don't need this as the GPU feeder runs at a higher priority than the CPU tasks, and the GPU task only takes about a tenth of a CPUs time.

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BOINC WIKI

I got it now. Thanks for the info.

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