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Number crunching :
Now that v7 has rolled out..........
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Author | Message |
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jason_gee Send message Joined: 24 Nov 06 Posts: 7489 Credit: 91,093,184 RAC: 0 |
One WU finished waiting for validation. Much appreciated here :) Dr Ivan mentioned, buried amidst the chaos, that he's going to have a look for x41zc update needs, and Urs provided some helpful starting suggextions. "Living by the wisdom of computer science doesn't sound so bad after all. And unlike most advice, it's backed up by proofs." -- Algorithms to live by: The computer science of human decisions. |
Josef W. Segur Send message Joined: 30 Oct 99 Posts: 4504 Credit: 1,414,761 RAC: 0 |
Now that my GTX460 cruncher is on stock app for the first time, it downloaded its first Nvidea AP to crunch using opencl. However, GPU utilization is very low. For MB WUs, GPU utilization is typically 80-90% (for 1 v7 WU), but the AP was only showing ca 4% GPU utilization. I freed up one CPU core and this increased to 18% with occaisional bursts up to 100%. Freeing up a second CPU core made no difference. Is this normal? Assuming that was your Task 3022864474, the "percent blanked: 79.34" is why CPU and Run time were long and GPU usage low. More than half the time was spent in class T_remove_radar_randomize which has to be run on CPU. Joe |
Keith Myers Send message Joined: 29 Apr 01 Posts: 13164 Credit: 1,160,866,277 RAC: 1,873 |
The developers might want to look at the V7 rollout again with regard to the inability of the servers to supply the necessary files to run the tasks. I'm still pissed that upon updating to V7, the project promptly assigned me 100 CUDA50 tasks while the client was still unsuccessfully trying to download the .DLL for them. And all 100 tasks got errored out immediately because the DLL was still missing. It took over 2 hours to persuade BOINC to download the DLL file. I would have thought the system should not have downloaded any tasks until the necessary files were on board. Keith http://setiathome.berkeley.edu/results.php?hostid=5741129&offset=0&show_names=0&state=6&appid= Seti@Home classic workunits:20,676 CPU time:74,226 hours A proud member of the OFA (Old Farts Association) |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13854 Credit: 208,696,464 RAC: 304 |
I would have thought the system should not have downloaded any tasks until the necessary files were on board. It downloads them, but then holds them untill the necessary files have downloaded. They wouldn't have errored out unless something else happened or was done (such as aborting the download of one or more of the application files). That's the way it was for me. Grant Darwin NT |
betreger Send message Joined: 29 Jun 99 Posts: 11416 Credit: 29,581,041 RAC: 66 |
Maybe this is the correct thread to ask this question. The auto correlation increases the sensitivity for weak signals by how many db? |
Keith Myers Send message Joined: 29 Apr 01 Posts: 13164 Credit: 1,160,866,277 RAC: 1,873 |
I didn't abort the download. I kept hitting try again and watched the backoff times increase, so I shut client down and rebooted. Again watched the client unsuccessfully try to download the .DLL (either unable to access the server or server timeout). Got disgusted and left the room. Came back a couple of hours later and saw the client finally got the .DLL. Only, now the server is only offering up mainly CUDA32 tasks and a couple of CUDA42 tasks. My quota for CUDA50 is now 1 a day until the errors clear. Cheers, Keith Seti@Home classic workunits:20,676 CPU time:74,226 hours A proud member of the OFA (Old Farts Association) |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13854 Credit: 208,696,464 RAC: 304 |
I didn't abort the download. I kept hitting try again and watched the backoff times increase, so I shut client down and rebooted. Again watched the client unsuccessfully try to download the .DLL (either unable to access the server or server timeout). Got disgusted and left the room. Came back a couple of hours later and saw the client finally got the .DLL. Only thing that comes to mind is in it's many attempts to download, one of the files was corrupted or only partial. When it tried to run, it errored out the WUs & re-downloaded the file. I had something similar happen on one of my systems; on the other system i just left it alone & the files eventually download OK & things started running without aborts or other issues. Grant Darwin NT |
Josef W. Segur Send message Joined: 30 Oct 99 Posts: 4504 Credit: 1,414,761 RAC: 0 |
Maybe this is the correct thread to ask this question. The auto correlation increases the sensitivity for weak signals by how many db? None. Autocorrelation is a search for a different type of signal, where the transmission is the combination of an original signal combined with a delayed copy of the same signal. Such a combination would be a good indication of intelligent intent given a significant delay. Joe |
juan BFP Send message Joined: 16 Mar 07 Posts: 9786 Credit: 572,710,851 RAC: 3,799 |
After 2 days of work, still having some trouble with the scheduler dsending the wrong WU to some hosts, for example cuda50 to a 590/580 host, cuda32 to a 2x690 host, etc. Any clues how to fix that? |
Gary Charpentier Send message Joined: 25 Dec 00 Posts: 31006 Credit: 53,134,872 RAC: 32 |
Maybe this is the correct thread to ask this question. The auto correlation increases the sensitivity for weak signals by how many db? Or gravitational lensing. |
W-K 666 Send message Joined: 18 May 99 Posts: 19400 Credit: 40,757,560 RAC: 67 |
After 2 days of work, still having some trouble with the scheduler dsending the wrong WU to some hosts, for example cuda50 to a 590/580 host, cuda32 to a 2x690 host, etc. Any clues how to fix that? I'm stuck in the same boat. My two computers, both with 670's, started on 100+ tasks using 32 on one and 42 on the other. Neither computer has any 50's validated so the server cannot make a decision yet on which is the best app. Although one has got 32 and 42 tasks validated and it should see that the 42 app is much better than 32. When I get 50's tasks I force the computer to do these asap, in the hope that the more done the greater the chance one, at least, will be verified. |
juan BFP Send message Joined: 16 Mar 07 Posts: 9786 Credit: 572,710,851 RAC: 3,799 |
After 2 days of work, still having some trouble with the scheduler dsending the wrong WU to some hosts, for example cuda50 to a 590/580 host, cuda32 to a 2x690 host, etc. Any clues how to fix that? The wierd thing is i allready have a lot of cuda42 work done in the 590/580 host and the scheduler continues to send only cuda50 to that host, the same happens on the 2x690, it allready have a lot of cuda50 done and the server still sending cuda32 to it. Something similar happening of some of my others hosts. I just don´t understand why not put a instruction to allow us to choose the best app to our host manualy, that could save a lot of time and resources. |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13854 Credit: 208,696,464 RAC: 304 |
I just don´t understand why not put a instruction to allow us to choose the best app to our host manualy, that could save a lot of time and resources. Because those that know will use the Lunatics installer. The stock application is for those that don't know. Grant Darwin NT |
Wiggo Send message Joined: 24 Jan 00 Posts: 36789 Credit: 261,360,520 RAC: 489 |
After 2 days of work, still having some trouble with the scheduler dsending the wrong WU to some hosts, for example cuda50 to a 590/580 host, cuda32 to a 2x690 host, etc. Any clues how to fix that? Thankfully I've avoided this problem all together. Cheers. |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 66339 Credit: 55,293,173 RAC: 49 |
I just don´t understand why not put a instruction to allow us to choose the best app to our host manualy, that could save a lot of time and resources. Some will do stuff by hand, even with the installer, all I need to do is extract the cpu file and add it's name and other pertinent facts to the app info file and I'm done, for others, I agree. Savoir-Faire is everywhere! The T1 Trust, T1 Class 4-4-4-4 #5550, America's First HST |
juan BFP Send message Joined: 16 Mar 07 Posts: 9786 Credit: 572,710,851 RAC: 3,799 |
I just don´t understand why not put a instruction to allow us to choose the best app to our host manualy, that could save a lot of time and resources. They why put the option to run more than one WU at a time on stock? You need to know to choose right this option too. |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13854 Credit: 208,696,464 RAC: 304 |
They why put the option to run more than one WU at a time on stock? You need to know to choose right this option too. I haven't seen that option anywhere in my clickings at this time. Where it it located? Grant Darwin NT |
juan BFP Send message Joined: 16 Mar 07 Posts: 9786 Credit: 572,710,851 RAC: 3,799 |
They why put the option to run more than one WU at a time on stock? You need to know to choose right this option too. Look at http://setiathome.berkeley.edu/forum_thread.php?id=71806 its explains how to do that. |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13854 Credit: 208,696,464 RAC: 304 |
They why put the option to run more than one WU at a time on stock? You need to know to choose right this option too. Read through that thread a couple of times & can't see any where where it tells you how to do it, let alone where it's an option selectable on the client or web site (which is what would be needed for it to be an option for stock installations). Grant Darwin NT |
Claggy Send message Joined: 5 Jul 99 Posts: 4654 Credit: 47,537,079 RAC: 4 |
They why put the option to run more than one WU at a time on stock? You need to know to choose right this option too. We now have an app_config.xml option where we can change the number of tasks allowed to run, you can limit the total number for an app name, and you can change the number that runs on the GPU, all without having to run an app_info: BOINC 7.0.40-42 and new app_config.xml Edit: to change my mistake of saying app version instead of app name. Claggy |
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