GPU issue
14 Jan 2013 13:08:11 UTC
Topic 196740
(moderation:
Hello,
The Symptom: My GPUs no longer process Einstein WUs (while they do others)
My story: Initialy, after a fresh install of the latest BOINC client, the GPUs were processing ALL types of Work Units from Einstein (and SETI). I haven't had BOINC on my system for a year, and certainly not since I aquired two OpenCL capable GPUs. So after re-establishing the connection, I was pleased to find the GPUs merryly crunching everthing they could. I had a look areound. I found the 'GPU utilization factor of BRP apps' setting and read about it in the Message Boards. So, I set mine to 0.5 and no Einstein Work Units were taken again by the GPUs. I reset 'GPU utilization factor of BRP apps' to 1.0 but still no GPU use by Einstein at all.
Speculation: Are the WUs pre-processed to be special types for use only by the GPU? The reason I ask is because when I made the settings adjustment, and the fast GPU processing stopped, the Einstein WUs started to accumulated. So I stopped the project from fetching new work. Now - for what ever reason - the GPUs arn't crunching Einstein at all. So I may only have WUs able to be processed by the normal CPU. Like I said: Speculation.
But the issue remains - my GPUs are not crunching for Einstein.
Help please.
And thank you.
Oh- and I looked around the Message Boards an copied an idea by making a cc_config.xml file in C:\ProgramData\BOINC with
1
in it. Just to let you know it's there.
GPU issue
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Can you post the messages when requesting work? Maybe the answer can be found there.
RE: Can you post the
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Trouble is, at the moment he's not requesting work. From the server log for his host's most recent contact:
Yes, that's right. No more
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Yes, that's right. No more WUs until this lot gets processed - I'm working on the assumption stated, that there are separate WUs for the GPUs. I've got 82+ hours worth to get through(! - 5.5hrs per WU) before I resume downloading.
The issue with this is that it is taking sooo long (for Einstein) and there's no room for WUs from other projects. And I don't want to download any more - at the moment - to see if it's working again.
****
So, the lines posted; it looks like there ARE two types.
So waiting it out like this; the right course?
Well, technically speaking,
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Well, technically speaking, all the WUs are the same, but your computer requests work for the two queues separately, and the server issues and accounts for them as if they were kept separate.
If you feel you want to get only ATI work from Einstein (either temporarily, while the backlog clears, or permanently), the best way is to visit your Einstein@Home preferences page, and deselect "Use CPU (Enforced by version 6.10+)" (second line). That won't affect your crunching of any tasks you may already have, but it will prevent your computer requesting new work for the CPU queue.
After that, you'll just have to wait until whatever work you already have marked for ATI processing to run down until your computer feels that it is ready to ask for more ATI work (from whichever project) again.
I see. Thank you, that's
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I see. Thank you, that's really helpful information. This way I will be able to carefully experiment with the 'GPU utilization factor of BRP apps' setting without interference.
86 bottles of beer on the wall....
Cheers!
Hi, I was working on binary
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Hi, I was working on binary radio, but I found in GPU-Z that gpu wasn´t loaded and tasks took about 8 hours compared to 8 minutes in milkyway applications (ati 7770). Is there any solution?
Einstein BRP4s running on the
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Einstein BRP4s running on the GPU run best when you leave one CPU core free. Now you seem to not do that, so the CPU core that works with the GPU is fighting for attention between whatever you run on it and Einstein.
Set your computing preferences for "On multiprocessors, use at most X% of the processors" to 75% to free one CPU core and you'll immediately see a decrease in time it takes for the OpenCL BRPs here to run to completion.
And ATI 7770 supported by a free CPU core should be able to run these tasks in around 1,900 seconds.
RE: Einstein BRP4s running
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Thanks, it helped. It took me 44 minutes, but it´s definitely better than 8 hours :D