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Message boards : Number crunching : No Milkyway with GTX480
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Just installed GTX 480 with driver 197.41 | |
| ID: 38673 · Rating: 0 · rate:
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Have a look at this: | |
| ID: 38675 · Rating: 0 · rate:
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Unfortunate the cuda app has compute capability 1.3 hard coded into it, so the app will not find a valid card and exit. The behaviour is effectively the same as if you were running it on older G80 or G90 with no double precision support. The good news is that is it only 1 one line change to the code and a one line change to the Makefile to fix it. It will also require building against Cuda 3.0 and need 195 series drivers on linux or 196/197 series on Windows. | |
| ID: 38690 · Rating: 0 · rate:
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Normally if you do not have the right card Milkyway does not download any WU, so why now it downloads WU?? | |
| ID: 38705 · Rating: 0 · rate:
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The milkyway application itself doesn't have any influence on when jobs are downloaded, the boinc client does that. I am going to guess that the boinc client contains a compute capability test like this: if (CUDACapabilityMajorrevisionnumber >= 1) and (CUDACapabilityMinorrevisionnumber >= 3) then card is OK whereas the milkway app has a test like this: if (CUDACapabilityMajorrevisionnumber == 1) and (CUDACapabilityMinorrevisionnumber == 3) then card is OK so that compute 2.0 cards are OK with the boinc client and not OK with the milkway app. The first first is a guess, because I haven't seen the boinc client code, but the second part is definitely right - you can see it in the code available for download here. | |
| ID: 38719 · Rating: 0 · rate:
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Correct, the code specifically asks for compute capability 1.3. I will have to look into the changes that compute capability 2.0 brought and determine whether or not they support the CUDA Framework 2.3. | |
| ID: 38747 · Rating: 0 · rate:
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Any idea when the change to CC 2.0 can take place? | |
| ID: 39004 · Rating: 0 · rate:
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I posted new applications on Milkyway@Home version 3, I only have a GTX 285 so I am not able to test whether it works or not. | |
| ID: 39017 · Rating: 0 · rate:
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I posted new applications on Milkyway@Home version 3, I only have a GTX 285 so I am not able to test whether it works or not. hi testing no error so far:) 5.20min GTX480 | |
| ID: 39019 · Rating: 0 · rate:
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Hmmm...slower than my 4850. What's it like at Collatz? | |
| ID: 39021 · Rating: 0 · rate:
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Hmmm...slower than my 4850. What's it like at Collatz? hi:) 8.15min | |
| ID: 39022 · Rating: 0 · rate:
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Hmmm...slower than my 4850. What's it like at Collatz? 5 minutes faster than my 4870. | |
| ID: 39038 · Rating: 0 · rate:
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Hmmm...slower than my 4850. What's it like at Collatz? 1:05 slower than my 5830. ____________ | |
| ID: 39040 · Rating: 0 · rate:
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I posted new applications on Milkyway@Home version 3, I only have a GTX 285 so I am not able to test whether it works or not. and: hi:) 8.15min To contrast I have a 5870 and the comparable times are >2Min at MW and ~5:44-6:00 at Collatz, and at a cost of a little over $400 a bit cheaper ... Just food for comparison. I hate losing the ability to run other projects like GPU Grid, but the cost benefit ratio says ATI to me ... I can get a suite of 5870 cards to replace my older Nvidia cards as soon as I can ... and my production is going to go up a lot... and my power is staying the same or falling (depending on whose numbers you use) ... In one system I am doing about 294K CS per day with a 5870 and GTX280 card... I had a system with a pair of GTX260 cards and it was doing about 72K a day ... it is too soon to know if it is going to go all the way up to 290K or not, would be nice, but even so, one card is likely to double that machine's production... my pair of 4870 cards do about 140K per day together which also is not bad at all ... I will know better in a couple days when the stat sites start to crunch the data but here is hoping ... :) | |
| ID: 39041 · Rating: 0 · rate:
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The benchmarking I have done for the GTX470 shows it to be slightly better than twice as fast at double precision compared to a GTX275. The linear algebra benchmarks I use are generally memory bandwidth limited - a stock GTX275 hits about 77 Gflop/s double precision, and the GTX470 hits about 160 Gflop/s doing the same operation running identical code. There are new architectural features in Fermi which should allow that to improve further with some tuning. | |
| ID: 39043 · Rating: 0 · rate:
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GTX480 - WU Milkyway 3 = OK - 5 min. 8 secs. | |
| ID: 39044 · Rating: 0 · rate:
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If you want to push the beast - there is a good review on o/c the 480 at Guru3d (they also did one for the 470, which was a little dubious in outcome). | |
| ID: 39047 · Rating: 0 · rate:
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I have a GTX 480 and also a GTX 470. | |
| ID: 39050 · Rating: 0 · rate:
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At stock it will be "ok" - even NVidia are not going to field something that needs earplugs at stock. Although the 480 gets close to that in its guise as an egg-fryer. | |
| ID: 39052 · Rating: 0 · rate:
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The benchmarking I have done for the GTX470 shows it to be slightly better than twice as fast at double precision compared to a GTX275. The linear algebra benchmarks I use are generally memory bandwidth limited - a stock GTX275 hits about 77 Gflop/s double precision, and the GTX470 hits about 160 Gflop/s doing the same operation running identical code. There are new architectural features in Fermi which should allow that to improve further with some tuning. And were they the only game in town I would be salivating over upgrading my 260/280/295 cards to the latest and greatest. However, the numbers you post here for the 470 shows that it is twice as fast as my 4870 for Collatz (~16 min) it is more than twice as slow for MW (~3:15) and the 4870's are only about $150 US ... In a way I regret my slow migration to the world of ATI because I really do like GPU Grid for example and there is no doubt that the CUDA applications are more common still ... but, we are up to 3 ATI projects with SaH looming on the horizon in having a viable 4th application "real soon now" to quote Jerry Pournell ... | |
| ID: 39062 · Rating: 0 · rate:
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Message boards :
Number crunching :
No Milkyway with GTX480