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Number crunching :
Running SETI@home on an nVidia Fermi GPU
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MadMaC Send message Joined: 4 Apr 01 Posts: 201 Credit: 47,158,217 RAC: 0 |
Think I screwed this up last night, but will have another look when I get back tomorrow. I think it was adding the app block for the rescheduler entries that mess things up, so I rolled back to my original entry.. Looking at my tasks online I can see lots of 'Not in DB' messages in the application column, is this due to the scheduler problems posted here and elsewhere? |
TheFreshPrince a.k.a. BlueTooth76 Send message Joined: 4 Jun 99 Posts: 210 Credit: 10,315,944 RAC: 0 |
Bought a GTX 470 today, I hope it all works when the servers start splitting again :) It's fun to see many old members over here :) |
Richard Haselgrove Send message Joined: 4 Jul 99 Posts: 14679 Credit: 200,643,578 RAC: 874 |
I moved my GTX 470 to a different host while we were down yesterday, and left it on stock settings (no app_info) for the time being to see what happens. Just got an allocation of v6.10, with the right application, DLLs and all. Looks like they've got it sorted, and the Fermis should work as designed without babysitting. |
perryjay Send message Joined: 20 Aug 02 Posts: 3377 Credit: 20,676,751 RAC: 0 |
Great to hear Richard. Let us know if there are any problems. PROUD MEMBER OF Team Starfire World BOINC |
SciManStev Send message Joined: 20 Jun 99 Posts: 6658 Credit: 121,090,076 RAC: 0 |
I moved my GTX 470 to a different host while we were down yesterday, and left it on stock settings (no app_info) for the time being to see what happens. Are you able to get work for your 470 currently? My CPU has no problem getting new work, but the GPU's can't get a thing. Steve Warning, addicted to SETI crunching! Crunching as a member of GPU Users Group. GPUUG Website |
Richard Haselgrove Send message Joined: 4 Jul 99 Posts: 14679 Credit: 200,643,578 RAC: 874 |
It's fetching OK. I'll be off to bed shortly, but you can keep an eye on host 4292666 for me. Should start reporting shortly after 00:15 UTC (got a GPUGrid to polish off first), run about 8 tasks, then break for three hours or so for another GPUGrid. |
ToxicTBag Send message Joined: 5 Feb 10 Posts: 101 Credit: 57,197,902 RAC: 0 |
Hi all I am having the same problem Steve, i installed 6.10.56 and keep getting "reached daily quota of 100tasks" message. Not sure how long this will last, hopefully it is only temporary but it has certainly made me think twice about investing in more hardware. |
SciManStev Send message Joined: 20 Jun 99 Posts: 6658 Credit: 121,090,076 RAC: 0 |
Hi all It's not just Fermi's that are having the problem, but many GPU crunchers. You may have a separate problem as I might. See this thread. http://setiathome.berkeley.edu/forum_thread.php?id=60285&nowrap=true#1002625 We may both have this problem. Todd might also. Steve Warning, addicted to SETI crunching! Crunching as a member of GPU Users Group. GPUUG Website |
perryjay Send message Joined: 20 Aug 02 Posts: 3377 Credit: 20,676,751 RAC: 0 |
Might want to see this.. http://setiathome.berkeley.edu/forum_thread.php?id=60287&nowrap=true#1002666 another headache for the Berkeley boys! PROUD MEMBER OF Team Starfire World BOINC |
Todd Hebert Send message Joined: 16 Jun 00 Posts: 648 Credit: 228,292,957 RAC: 0 |
No different here - I thought I would wait a day to chime in (and I have been working like a dog) Most of my crunching machines have run out of GPU work and are starving right now. Thankfully my Fermi machine has enough work to keep going through the weekend. Todd Hi all |
MadMaC Send message Joined: 4 Apr 01 Posts: 201 Credit: 47,158,217 RAC: 0 |
Im not too bad, I do have work, but with a 10 day cache, I estimate that I have 20 days work for my cpu and maybe 2 days work for my fermi gpu. Rescheduler doesn't work for fermi, and I borked a load of units playing with my app info to try and get rescheduler to work, might have another go soon, as my cpu has more work than it can complete within the deadlines and it would make sense to move some of it to the gpu.. |
TheFreshPrince a.k.a. BlueTooth76 Send message Joined: 4 Jun 99 Posts: 210 Credit: 10,315,944 RAC: 0 |
Yes, finally I got it to work :) <app_info> <app> <name>setiathome_enhanced</name> </app> <file_info> <name>AK_v8b_win_x64_SSSE3x.exe</name> <executable/> </file_info> <app_version> <app_name>setiathome_enhanced</app_name> <version_num>603</version_num> <platform>windows_intelx86</platform> <file_ref> <file_name>AK_v8b_win_x64_SSSE3x.exe</file_name> <main_program/> </file_ref> </app_version> <app_version> <app_name>setiathome_enhanced</app_name> <version_num>603</version_num> <platform>windows_x86_64</platform> <file_ref> <file_name>AK_v8b_win_x64_SSSE3x.exe</file_name> <main_program/> </file_ref> </app_version> <app> <name>setiathome_enhanced</name> </app> <file_info> <name>libfftw3f-3-1-1a_upx.dll</name> <executable/> </file_info> <file_info> <name>setiathome_6.10_windows_intelx86__cuda_fermi.exe</name> <executable/> </file_info> <file_info> <name>cudart32_30_14.dll</name> <executable/> </file_info> <file_info> <name>cufft32_30_14.dll</name> <executable/> </file_info> <app_version> <app_name>setiathome_enhanced</app_name> <version_num>610</version_num> <avg_ncpus>0.200000</avg_ncpus> <max_ncpus>0.200000</max_ncpus> <plan_class>cuda_fermi</plan_class> <file_ref> <file_name>setiathome_6.10_windows_intelx86__cuda_fermi.exe</file_name> <main_program/> </file_ref> <file_ref> <file_name>cudart32_30_14.dll</file_name> </file_ref> <file_ref> <file_name>cufft32_30_14.dll</file_name> </file_ref> <file_ref> <file_name>libfftw3f-3-1-1a_upx.dll</file_name> </file_ref> <coproc> <type>CUDA</type> <count>0.5</count> </coproc> </app_version> </app_info> My specs: Windows 7 x64 (Dutch) Intel E8400 C2D 3.0@3.6Ghz Asus ENGTX470 2 tasks running on the CPU 2 tasks running on the GTX470 CUDA device |
Richard Haselgrove Send message Joined: 4 Jul 99 Posts: 14679 Credit: 200,643,578 RAC: 874 |
Flops estimating for Fermi In the middle of all the error messages last night, somebody asked about getting the running time estimates for the various applications into balance. This was my initial background explanation: BOINC 'knows' how fast your CPU and your GPU are. But when you put in an optimised app (strictly: when you use app_info.xml to specify an 'anonymous platform'), you're saying "forget everything you thought you knew: I know better, and I'm telling you everything you need to know in this file." I'm not going to go over all the practicalities again - read MarkJ's thread, especially the opening post - but here are my experiences with a Fermi. I was working on my Q9300 host (processor speed 2.5 GHz, benchmark 2.645 GFlops), running BOINC as a service under Windows XP, 32-bit - there are reports that Fermis run significantly slower under Windows 7. My Fermi is a GTX 470, which BOINC rates at 1,089 GFlops peak. Note that the last figure is peak GFlops. When Mark wrote that earlier thread, BOINC reported NVidia speeds in estimated GFlops, which are 5.6 times lower. My card would rate about 195 GFlops on the old measurement scale. When I calculate these figures, I aim for a Duration Correction Factor of 0.2. There's nothing special about that figure, except I believe it's roughly what the stock CPU application for SETI settles at on a modern Intel processor (it's a very long time since I tested that assumption!). So if somebody using the stock app stumbles across these message boards, and decides to do all the upgrading at once, their cache shouldn't be too badly affected. My figures ended up at: CPU: 3,826,762,478 GPU: 57,462,450,464 or, in multiplier terms, CPU: multiply <p_fpops> by 1.45 GPU: divide peak GFlops by 18.95 That's a rather narrower spread than we're used to with the earlier cards, which I think is perhaps accounted for by: a) The stock Fermi app uses rather more CPU support than earlier CUDA apps, which drags down CPU performance a bit. b) The CUDA 3.0 runtime doesn't yet get as close to the theoretical hardware speed as the older DLLs do for their hardware. Hopefully, both of these will improve as the software matures, but this was a good enough starting point for now. |
perryjay Send message Joined: 20 Aug 02 Posts: 3377 Credit: 20,676,751 RAC: 0 |
Thanks Richard, Can you add this to MarkJ's thread so we can have just one thread to point to if we give someone advise on this? PROUD MEMBER OF Team Starfire World BOINC |
Richard Haselgrove Send message Joined: 4 Jul 99 Posts: 14679 Credit: 200,643,578 RAC: 874 |
Thanks Richard, No - that thread hasn't been added to for over six months, so it's automatically locked. It's also buried away on page 16 (the next thread started will bump it to 17), so I don't think it would be helpful to ask a Mod to resurrect it. There is also a copy of Mark's opening post in the sticky FAQ's, Astropulse, Cuda, MultiBeam - Read Only, but as the name says that's read only and I can't post there. Perhaps if Pappa is passing he might make a copy. One reason I posted in this thread is that it is already sticky, and a reasonable gathering of Fermi-related stuff. Would anyone who's posted here mind if I ask a Mod to move some of the individual Q & A material to a separate discussion thread, so we improve the signal-to-noise ratio for future readers? ... ... that is, if I can find a technically-minded Mod: they seem to be rather thin on the ground these days, since OzzFan and the others left us. |
perryjay Send message Joined: 20 Aug 02 Posts: 3377 Credit: 20,676,751 RAC: 0 |
That's the thread I was thinking about. Didn't remember it was read only but if we could get your information copied over to there it would sure help. PROUD MEMBER OF Team Starfire World BOINC |
RottenMutt Send message Joined: 15 Mar 01 Posts: 1011 Credit: 230,314,058 RAC: 0 |
...they seem to be rather thin on the ground these days, since OzzFan and the others left us. so that is why it's been so peaceful around here. finally some good news:) |
John Send message Joined: 21 May 99 Posts: 51 Credit: 5,667,907 RAC: 0 |
started the first set of fermi (gxt 470 card) Hostid http://setiathome.berkeley.edu/show_host_detail.php?hostid=5012909 uninstalled Lunatic Unfied installer I detached from project first to clear seti@home project file no app_info file reattached to project Fermi files appear to be working no -9 errors yet |
MadMaC Send message Joined: 4 Apr 01 Posts: 201 Credit: 47,158,217 RAC: 0 |
I have seen a few people stating that they are running 2 tasks on their gtx470&480's - why? When I look at gpu usage, I typically see 69% usage peaking in the 90's for short bursts. Is there any benefit to doing this, would it actually work out any quicker as Im thinking that it might crunch 2 units but would do so at half the speed? Am I right? |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 66286 Credit: 55,293,173 RAC: 49 |
I have seen a few people stating that they are running 2 tasks on their gtx470&480's - why? When I look at gpu usage, I typically see 69% usage peaking in the 90's for short bursts. Is there any benefit to doing this, would it actually work out any quicker as Im thinking that it might crunch 2 units but would do so at half the speed? Am I right? Based on experience with the GTX295 and sometimes running the thing with 4 WU's, So I'd say No and agree 1 WU per gpu is preferred. Savoir-Faire is everywhere! The T1 Trust, T1 Class 4-4-4-4 #5550, America's First HST |
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