Forum > GPU crunching
how do i run the stock GPU app and Lunatic CPU apps
RottenMutt:
i tried installing using lunatic unified installer and not checking the gpu app and ended dumping my cache :P
anyhow, the stock app has been outperforming the lunatic app!!!!
look at this rig http://setiathome.berkeley.edu/show_host_detail.php?hostid=5413841
Jason G:
Hi RottenMutt,
It's well known that higher 2XX series running on XP with older drivers & apps can beat x32f at mid angle ranges under particular conditions, which happen to be quite common for now (as always your mileage may vary). You can use the stock app if you wish via manual customisation of your appinfo and providing appropriate files, Or returning to stock outright.
The reason it's a 'your mileage may vary' situation, is that x32f was an early 'preview' release to address reliability problems in the stock app, reducing the number of '-12 errors' on high throughput hosts, and plugging a difficult emerging situation where Fermi users were installing incompatible applications that trash work.
Current optimisation efforts are directed at performance, and so status quo regarding preferred operating system and builds for best throughput is likely to change in the next few weeks, as skills and techniques learned in the powerspectrum unit tests are injected into the codebase.
For a pretty good idea on how much current efforts are likely to effect you, please visit the [Now closed for implementation of those developments] Powerspectrum Unit tests thread at http://lunatics.kwsn.net/12-gpu-crunching/split-powerspectrum-unit-test.msg33244.html#msg33244, and post results for your 295 here (That thread is closed, due to research in that area being deemed sufficiently complete for implementation to proceed. ).
The latest test piece (PowerspectrumTest10) requires Cuda 3.2 drivers & DLLs, and covers ~40-60% of multibeam processing through total rewrite for performance ( Still a lot of work to do in other areas though)
Best regards, Jason
perryjay:
Hi Jason G,
Looking forward to the next round of tests but my system has changed. I've now got a new power supply and a GTS 450 running in place of my little 9500GT. I'm running my 450 at 900/1800/1804 and two work units at a time. (Just like the big boys! ;D ) If we get much faster we won't need to download any work, it will be done before we can get it at the rate these things are growing. Okay, enough kidding around, I've got my 450 stable and ready to go on the next round of tests whatever they may be.
Jason G:
--- Quote from: perryjay on 28 Jan 2011, 10:50:12 am ---Hi Jason G,
Looking forward to the next round of tests but my system has changed. I've now got a new power supply and a GTS 450 running in place of my little 9500GT. I'm running my 450 at 900/1800/1804 and two work units at a time. (Just like the big boys! ;D ) If we get much faster we won't need to download any work, it will be done before we can get it at the rate these things are growing. Okay, enough kidding around, I've got my 450 stable and ready to go on the next round of tests whatever they may be.
--- End quote ---
If you feel like it, you could post PowerspectrumTest10 results for that killer here ;D
perryjay:
Here it is...
Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\perry>cd/test
C:\test>powerspectrumtest10.exe
Device: GeForce GTS 450, 1800 MHz clock, 993 MB memory.
Compute capability 2.1
Compiled with CUDA 3020.
PowerSpectrum+summax Unit test #10 (FFT pipeline throughput)
Stock:
Processing... Done!
Compute Thoughput GFlops Avg( 39.55) Peak( 64.30) Min( 6.03) [OK]
Memory thoughput GB/s Avg( 21.70) Peak( 32.15) Min( 9.69)
Opt1 (worst case): 256 thrds/block, 2 x 524288 element streams
revert to single stream from size 512
Processing... Done!
Compute thoughput [GFlops] -
Avg( 56.33, 1.42x) Peak( 87.73, 1.36x) Min( 19.94, 3.31x) [OK]
Memory thoughput [GB/s] -
Avg( 33.93, 1.56x) Peak( 44.28, 1.38x) Min( 23.74, 2.45x)
C:\test>
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