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Category: Support
Forum: Suggestions / Feedback
Thread: What a difference a GPU makes |
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Thread Status: Active Total posts in this thread: 16
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mikaok
Senior Cruncher Finland Joined: Aug 8, 2006 Post Count: 489 Status: Offline Project Badges: 
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But, as I already said, don't use credits as a measure of actual processing power. The difference on processing time in Milkyway that you point out is more valid and very interesting, a 170x increase I think. As discussed earlier, I'll stay sceptical until I see it. Nothing against CUDA applications (my gtx is folding btw), but there's always something that just doesn't seem to fit in the big picture.
to infinity and beyond
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nasher
Veteran Cruncher USA Joined: Dec 2, 2005 Post Count: 1423 Status: Offline Project Badges: 
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P.S.: @Nasher: I just realized that you joined WCG one day before me  strange world hu well to be honest i know they are working on GPU processing here and it will be nice when it comes out (if you have a supported GPU) but honestly i am trying to get more people involved in Boinc and WCG..i figure i cant help WCG get to GPU but if i can get one more cruncher out there i have done my part while i wait for GPU  |
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cw64
Advanced Cruncher Joined: Oct 6, 2007 Post Count: 120 Status: Offline Project Badges: 
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If your sceptical about the credits plz read this
----------------------------------------Milkyway tasks taking ~1.5 mins on GPU or ~4.25 hours on CPU* * To put that into some context the same CPU has been chewing through the last splash of DDDT C types at 1.62-1.37 hours per p WU and 0.59-0.53 per s WU  |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
An article on the considerations in GPU programming so it is actually done efficiently and in a way that not 50% of the time is spend waiting on data (particularly of importance with larger models)
----------------------------------------http://www.theregister.co.uk/2010/09/22/weather_at_gtc/ H/t to David Autumns for finding this.
WCG
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nasher
Veteran Cruncher USA Joined: Dec 2, 2005 Post Count: 1423 Status: Offline Project Badges:
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If your sceptical about the credits plz read this Milkyway tasks taking ~1.5 mins on GPU or ~4.25 hours on CPU* * To put that into some context the same CPU has been chewing through the last splash of DDDT C types at 1.62-1.37 hours per p WU and 0.59-0.53 per s WU for the applications run at Milkyway yes the GPU is alot faster or appears to be. quick question is is a GPU work unit Identical to a CPU unit? 2nd thing none of these projects were developed or optimized for GPU's another thing to consider with programs like CEP-2 it has been out for months and we are hopefully getting a version to run on Windows... and haven't touched the Mac version... and you want a CPU version as well???? they have told us they are working on building GPU's but it isnt in the top 10 things they are working on right now. Milkyway will be processing similar data for years to come and every Milkyway project will be similar in style or all convert to a new project type at the same time. here at WCG there are 8+ active project by different partners. |
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Ingleside
Veteran Cruncher Norway Joined: Nov 19, 2005 Post Count: 974 Status: Offline Project Badges:
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for the applications run at Milkyway yes the GPU is alot faster or appears to be. quick question is is a GPU work unit Identical to a CPU unit? Yes, the same Milkyway-wu's can be run by either a cpu or a GPU. For most projects it's similar behaviour. This is probably easiest seen with SETI, since they're needing a quorom of 2, it's easy to find wu's there one result has been returned by cpu while the other result by GPU. Appart for GPU-only projects like GPUGRID, the AFAIK only project that has special GPU-wu's is the non-BOINC-project Folding@Home, since in FAH example a Nvidia-GPU-wu is never sent to anything except Nvidia, and an Ati-GPU-wu is only sent to Ati and so on...  "I make so many mistakes. But then just think of all the mistakes I don't make, although I might." |
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