I am fairly new to BOINC and even newer to GPU's so please bear with me...

A team member donated his old GTX275 to me a few months ago and I have been using it here ever since. I have 910K credits and was looking for my first Million. Now, I understand there have been some changes and I am no longer getting and WU's.

I do not know what CUDA 3.1 or CUDA 4.2 is. I have figured out it has nothing to do with my nVidia driver version though! I am running 306.23 and was unable to upgrade to 310.90...

Is the GTX275 compatible with CUDA 4.2? If so, how do I upgrade CUDA on my machine?

Thanks for any and all help!

Chuck

I tried a 285gtx with cuda 4.2 but the performance was very poor. Nearly 50% longer then cuda31. So i would recommend to stay on short tasks.

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DSKAG Austria Research Team: http://www.research.dskag.at

OK, this is weird. I disabled long runs in my GPUGrid preferences and then reset the project in BAM. Then I received a CUDA42 long run WU! I was hoping to still get the short CUDA31 tasks...

http://www.gpugrid.net/workunit.php?wuid=4066922


Chuck

Thanks! I didn't realize the short tasks were still using the old CUDA31.

Chuck

To prevent receipt of tasks from either queue, when editing your Project Preferences unselect the following,

If no work for selected applications is available, accept work from other applications?

This is usually not required as the queues are normally loaded with plenty of tasks. However application testing is presently under way.

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FAQ's

HOW TO:
- Opt out of Beta Tests
- Ask for Help

I forgot to do that. However, I am curious why I am getting a CUDA42 task AND it appears to be running OK...

On short you get cuda42 And 31. Only with driver under 301 you get cuda31 only.

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DSKAG Austria Research Team: http://www.research.dskag.at

OK, if I understand you correctly...

With nVidia driver 306.23 I do have CUDA42. However, from your experience, it will run very slow on my GTX275 and I should stick with CUDA31.

I was not aware that driver 306.23 had CUDA42. So, I need to find a stable driver under 301.xx to run only CUDA31 short runs.

Is that correct? If so, what driver would you recommend?

Thanks and sorry for the Noob questions.

Chuck

OK, if I understand you correctly...

With nVidia driver 306.23 I do have CUDA42. However, from your experience, it will run very slow on my GTX275 and I should stick with CUDA31.

I was not aware that driver 306.23 had CUDA42. So, I need to find a stable driver under 301.xx to run only CUDA31 short runs.

Is that correct?

Yes, this is correct.

If so, what driver would you recommend?

I would recommend the driver 285.58.
There are two more recent drivers (296.10 and 295.73) before 301.42 which are also suitable for you, but they have the monitor sleep bug (e.g. you have to set Windows to never turn off your monitor, or else your tasks will fail when it happens)