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World Community Grid Forums
Category: Completed Research
Forum: Help Conquer Cancer
Thread: GPU Optimisations |
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Thread Status: Active Total posts in this thread: 198
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Picked up my Sapphire 7770 Ghz OC Edition today.
 http://www.sapphiretech.com/presentation/prod...59&lid=1&pid=1452 Installed with latest version of Catalyst 13.1 - ready to go !! No tasks available for download for AMD. So I put the Nvidia card back in to keep work going. Any way of telling when work is available in the "feeder" before installing and update to get new work ?? Thanks |
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coolstream
Senior Cruncher SCOTLAND Joined: Nov 8, 2005 Post Count: 475 Status: Offline Project Badges: 
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@ underwater, in the time it took to take out one card and replace it, I am sure you could have pulled in GPU units.
----------------------------------------I suggest putting your AMD card back in and doing a Project Update. (In Boinc Manager, this is done by going to Projects tab, highlighting World Community Grid line and hitting the Update button on the left. You can then check the result in the Event Log window. keep repeating this until you get some GPU units. You shouldn't have to do this too many times). There is some debate about the optimal amount of units you can process simultaneously, and this would also depend on your CPU. With the same card in one of my machines and an i7 920, I am doing 3 GPU tasks simultaneously. Good luck with yours!  Crunching in memory of my Mum PEGGY, cousin ROPPA and Aunt AUDREY. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
@ underwater, in the time it took to take out one card and replace it, I am sure you could have pulled in GPU units. I suggest putting your AMD card back in and doing a Project Update. (In Boinc Manager, this is done by going to Projects tab, highlighting World Community Grid line and hitting the Update button on the left. Cheers for quick response. Always have the event log window open. Gave maybe 15 minutes with same result, no tasks for amd. That's why I changed back. I'll try again later. Thanks. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
on my 7870 i am running 10 gpu wu's in an average of 12 minutes oc gpu and I get 10 minutes with i5 2500 all threads
----------------------------------------or on my 7870 i can run 8 gpu wu's in 8 minutes leaving one thread for cpu work [Edit 1 times, last edit by Former Member at Feb 11, 2013 3:42:51 PM] |
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Crystal Pellet
Veteran Cruncher Joined: May 21, 2008 Post Count: 1405 Status: Offline Project Badges: 
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I also tried branjo's option of 24 concurrent tasks on my not overclocked 7770 GPU and all went well without errors or restarts.
I did 4 runs of 24 each with all 8 threads of my not overclocked i7-2600 dedicated to the GPU-tasks. The first run I started 24 tasks at once, but after each run the GPU- and CPU-part of the tasks separates more and more, leading to lower elapsed times. Here the 4 runs with mean total run time for 24 tasks and runtime per task: 58:29 - 02:26 55:28 - 02:19 54:28 - 02:16 53:47 - 02:14 |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Reads like a Big Whopper config... 2 minutes 14.458 seconds on the last run, per task or differently, 26.77 results per hour. Say 65 credit per double image task, a *mere* 292K ppd [if that were correctly computed... :jawdropping smiley:]
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branjo
Master Cruncher Slovakia Joined: Jun 29, 2012 Post Count: 1892 Status: Offline Project Badges: 
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branjo, not sure if I am reading your post correctly. Is it taking 1 hour 45 minutes per wu when you were crunching 24 concurrently? With 8 gpu wu's having there own cpu thread, mine are averaging about 8 minutes per on a 7870 ghz edition with a 3770k processor. No, Bearcat, I meant 1 h 20 mins - 1 h 25 mins. Since you GPU is more than 3x powerful (i terms of compute power) than my 7750, also your 3770k is faster than my 3770, it is more-or-less similar (  ) performance to mine  Cheers   Crunching@Home since January 13 2000. Shrubbing@Home since January 5 2006  |
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Crystal Pellet
Veteran Cruncher Joined: May 21, 2008 Post Count: 1405 Status: Offline Project Badges:
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Reads like a Big Whopper config... 2 minutes 14.458 seconds on the last run, per task or differently, 26.77 results per hour. Say 65 credit per double image task, a *mere* 292K ppd [if that were correctly computed... :jawdropping smiley:] Please recompute: Your 292K looks like ppw and not ppd. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Looks again... 26.77 results per hour times 24 hours in a day times 65 credit per result times 7 points per credit... don't know what your abacus makes of this or which multiplicator is incorrect.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I also tried branjo's option of 24 concurrent tasks on my not overclocked 7770 GPU and all went well without errors or restarts. I did 4 runs of 24 each with all 8 threads of my not overclocked i7-2600 dedicated to the GPU-tasks. The first run I started 24 tasks at once, but after each run the GPU- and CPU-part of the tasks separates more and more, leading to lower elapsed times. Here the 4 runs with mean total run time for 24 tasks and runtime per task: 58:29 - 02:26 55:28 - 02:19 54:28 - 02:16 53:47 - 02:14 Hey C.P. Can get good comparison between the non OC'd and the OC'd 7770 as I'm also running a 2600 cpu that isn't OC'd. Same app_config as you I think - .333 cpu and .041 gpu per task for 24 concurrent GPU tasks. Task average finish time is 46 mins for mine. I can't wait for Rob's math on that, the ppd seems ridiculous for a cheap graphics card. Rob - you sure that math in your last post was correct ?? (I got no idea myself) ARH - it was too high then (didn't refresh my browsewr before I posted - sorry) [Edit 1 times, last edit by Former Member at Feb 11, 2013 8:43:01 PM] |
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