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World Community Grid Forums
Category: Beta Testing
Forum: Beta Test Support Forum
Thread: Work Now Available for Beta Test |
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Thread Status: Active Total posts in this thread: 231
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mikey
Veteran Cruncher Joined: May 10, 2009 Post Count: 821 Status: Offline Project Badges: 
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Well these OpenCL GPU tasks have a fair amount of CPU time at the start and end. So if you allocate a CPU core to support these GPU tasks your computer will be more efficient overall as the GPU tasks will complete faster. This is assuming that GPU work is consistently available. When GPU work is not available a CPU core would be idle. This should be handled automatically by BOINC for high CPU usage GPU applications but often isn't because variable performance potential of different contributors' hardware makes projects reluctant to do so. It's kind of a "can't please everyone" scenario. I understand all this and when the gpu units become consistently available I will do that, I am just saying that is it worth it to change Boinc to do it automatically NOW with everything else going on too? I HAVE done it already for my Nvidia card as it takes more alot of a cpu core when it is running. I do it manually when I see the Beta units come thru too, I just have too many machines to always see it. One question though, if I have more than one gpu in a machine, and I have two machines like that, will WCG require one cpu core for EACH gpu or will one cpu core be enough to fulfill both gpu's needs.   |
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Bugg
Senior Cruncher USA Joined: Nov 19, 2006 Post Count: 271 Status: Offline Project Badges: 
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As few and far between as the gpu beta units are right now here at WCG, I'm personally not going to worry about freeing up a cpu for my gpu. If I decide to crunch GPU later when it's launched, then I will do that.
----------------------------------------As for your last question, I don't know, but to me, logic would seem to point towards the fact that if a GPU unit uses about (just an example here, by the way) 0.16 of a cpu while crunching the gpu work unit, then I'd say you could (theoretically, of course) have up to 6 gpu's going at once in your machine and be fine. Now, this is all what seems logical to me, not what might really be the way it's handled.  i5-12600K (3.7GHz), 32GB DDR5, Win11 64bit Home |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
As a percent Bugg you are correct but remember the same.science requires the same resources.
If the CPU portion is anything above 30% than I will disable a core personally speaking. Since the beta for my.570 was taking .80 of my CPU. One was.disabled. I hope the % isn't that high when it officially starts though. |
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mwgiii
Advanced Cruncher United States Joined: Aug 17, 2006 Post Count: 131 Status: Offline Project Badges: 
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For those that only want to do WCG, but do not want to have their GPU idle, set backup projects [GPUgrid e.g.] with zero project weight / resource share. If WCG has non, the client will go fetch them from your backup projects. Theory as yet not seen this in operation. Who does know is asked to share. I have been using SETI set to zero resource share as a backup to GPUGrid. It seems to work very well for me. Whenever GPUGrid is down, SETI keeps my GPU working. Of course when WCG comes online, I plan on dropping SETI. I have always understood that if you have a hyper-threaded CPU, freeing a core for the GPU is a must. In my case with a non-hyper-threaded quad, freeing a core would not offset the loss of CPU work.   |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Makes sense since a Hyperthreaded core is really half a physical core. On an Quad-HT effectively an 8 threaded device, you'd in practice loose at start half a CPU core production. Would BOINC not be using that 8th thread, the 7 have quasi more juice at disposal... Wonder how in that setup it will run, so stand-by... testing imminently to see if any job suddenly will run faster or if the OS will spread the spare cycles out to all...
.. and a few minutes later, it is interesting to see how 5 threads continue to run near 100% but not fully as is the case if BOINC processor use is set to 100%. 1 thread runs about 80% and 2 run about 70%. Total load per Task Manager is steady on 88%, which is pretty much 7 of 8 threads equivalent and the CPU runs 1C cooler. Looks like W7 is managing to spread the headroom around. Now to understand if this translates to a general improvement in CPU time duration. The CPU Hrz do not show as were the multiplier increased. --//-- |
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Movieman
Veteran Cruncher Joined: Sep 9, 2006 Post Count: 1042 Status: Offline |
Ok, I need a question answered:
----------------------------------------Who do I need to write to to get at least ONE of these GPU units sent to me? I'm starting to feel like the red headed stepchild out here in New Hampshire. I mean heck, we do bathe daily like the rest of you, don't beat our wives or children and do have at least a few of the social graces! Don't you guys like us New Englander's?   |
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BladeD
Ace Cruncher USA Joined: Nov 17, 2004 Post Count: 28976 Status: Offline Project Badges:
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No one is getting any WUs now.
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nanoprobe
Master Cruncher Classified Joined: Aug 29, 2008 Post Count: 2998 Status: Offline Project Badges: 
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Ok, I need a question answered: Who do I need to write to to get at least ONE of these GPU units sent to me? I'm starting to feel like the red headed stepchild out here in New Hampshire. I mean heck, we do bathe daily like the rest of you, don't beat our wives or children and do have at least a few of the social graces! Don't you guys like us New Englander's? FWIW I think the Nvidia card holders got shorted on this run. Of the 39 I received only 2 made it to my GTX 460.  
In 1969 I took an oath to defend and protect the U S Constitution against all enemies, both foreign and Domestic. There was no expiration date.
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ryan222h
Senior Cruncher Joined: Sep 4, 2006 Post Count: 425 Status: Offline |
Ok, I need a question answered: Who do I need to write to to get at least ONE of these GPU units sent to me? I'm starting to feel like the red headed stepchild out here in New Hampshire. I mean heck, we do bathe daily like the rest of you, don't beat our wives or children and do have at least a few of the social graces! Don't you guys like us New Englander's? You have to realize that the only thing being sent right now are a limited number of BETA work units...this is not the actual project. Once the actual project is released (not beta) for GPU, there should be plenty of work units to go around. Be patient...I have also not even received 1 WU.  |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Ok, I need a question answered: Who do I need to write to to get at least ONE of these GPU units sent to me? I'm starting to feel like the red headed stepchild out here in New Hampshire. I mean heck, we do bathe daily like the rest of you, don't beat our wives or children and do have at least a few of the social graces! Don't you guys like us New Englander's?  Or maybe IBM knows HCC GPU means that XS is gonna trounce them in the stats - and is purposely withholding betas to XS members...   [Edit 1 times, last edit by Former Member at Mar 19, 2012 1:22:27 AM] |
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