Message boards : Graphics cards (GPUs) : Are WU's same size?
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I am seeing a wide variation in CPU times from 26,000 to 45,000s per WU. | |
ID: 3970 | Rating: 0 | rate: / Reply Quote | |
They're all the same. To see the run time of your WUs you have to check the ouput of the individual tasks, unfortunately. E.g. here it's saying: | |
ID: 3975 | Rating: 0 | rate: / Reply Quote | |
How big of an effect does running multiple projects have? | |
ID: 3980 | Rating: 0 | rate: / Reply Quote | |
Default is to run 4 CPU-WUs along one GPU-Grid-WU. That's a good performance balance, although under windows the 4th cpu task doesn't get much time. You can increase the GPU speed a bit by setting your BOINC to use at max 3 CPUs, so you get 3 CPU + 1 GPU task. Depending on the speed of your CPU and GPU this will give you more credits / day than 4+1. With your 8800GT/9800GT 3+1 is probably the best choice. | |
ID: 3982 | Rating: 0 | rate: / Reply Quote | |
We are actually starting to send new WUs for testing. These are not of the same size nor they should have the same time/step. | |
ID: 3993 | Rating: 0 | rate: / Reply Quote | |
We are actually starting to send new WUs for testing. These are not of the same size nor they should have the same time/step. Interesting to hear. :-) How will the credits look like then? ____________ Member of BOINC@Heidelberg and ATA! | |
ID: 3995 | Rating: 0 | rate: / Reply Quote | |
We are actually starting to send new WUs for testing. These are not of the same size nor they should have the same time/step. Well thank you for that info- that may explain things a bit... and I second the question regarding how credit will be assigned for varying size WU's... Thanks! | |
ID: 3996 | Rating: 0 | rate: / Reply Quote | |
I am seeing a wide variation in CPU times from 26,000 to 45,000s per WU. What other projects do you run ? Some projects use the wrapper application, and I have found some of those do not behave well, they hog cpu time, although they show they are running at low system priority, they are not because that does not show spawned threads. JAVA is the worst. I had really bad times when running the 'optimzer' application of malaria control, the gpugrid task would sit at ZERO cpu useage while those were running. I've heard reports of others too. Now I run 1 less core for CPU projects and gpugrid almost always gets its own core and runs more consistantly, mostly. What you nned to do is observe cpu usage in task manager for windows or whatever for linux. I would start with no other tasks. Then allow one project at a time and see if any have an effct on acemd. You probably will find one project that has a large effect than others, that will be the one slowing down you cpu usage and increasing the elapsed time. | |
ID: 4000 | Rating: 0 | rate: / Reply Quote | |
Hello: | |
ID: 4001 | Rating: 0 | rate: / Reply Quote | |
Credits will be assigned based on flops computed by the wu. Credits/hour should be more or less equivalent regardless of the WUs, but not exactly identical. | |
ID: 4003 | Rating: 0 | rate: / Reply Quote | |
@GDF: What is changed of current test WUs (except length)? Any news about these existing errors with .cu? | |
ID: 4004 | Rating: 0 | rate: / Reply Quote | |
JAMC, everything you report looks perfectly normal :) | |
ID: 4011 | Rating: 0 | rate: / Reply Quote | |
JAMC, everything you report looks perfectly normal :) OK, thanks for the feedback... I'll add another cruncher to the project later in the week :) | |
ID: 4016 | Rating: 0 | rate: / Reply Quote | |
Message boards : Graphics cards (GPUs) : Are WU's same size?