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World Community Grid Forums
Category: Beta Testing
Forum: Beta Test Support Forum
Thread: New Beta Starting 2011/07/22 |
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Thread Status: Locked Total posts in this thread: 296
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kateiacy
Veteran Cruncher USA Joined: Jan 23, 2010 Post Count: 1027 Status: Offline Project Badges: 
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Uh-oh, another issue with machines set to run 60% CPU usage on these betas: they are actually running 100% CPU usage and are getting too hot! (This is happening on one laptop running Ubuntu 10.04 and another running Ubuntu 11.04.)
----------------------------------------I have tried setting CPU usage both from the web page and in local preferences, and neither seems to have any effect when these betas are running. I'm going to let them finish if they have less than an hour left, but will abort the others. :(  |
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anhhai
Veteran Cruncher Joined: Mar 22, 2005 Post Count: 839 Status: Offline Project Badges: 
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kateiacy,
----------------------------------------I set my laptop to run at 70%, but sometimes it does get hot if I am running an application that also uses a lot of CPU. My solution is to just unplug the laptop for a few minutes to let it cool off. Unplugging the laptop (and letting it run on battery) will usually force the system to reduce power to the CPU (mine reduce it down to about 1/3 performance). Strange this is you still get the runtime, so the beta will actually take longer to finish  |
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mfbabb2
Senior Cruncher USA Joined: Feb 18, 2011 Post Count: 361 Status: Offline Project Badges: 
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Uh-oh, another issue with machines set to run 60% CPU usage on these betas: they are actually running 100% CPU usage and are getting too hot! (This is happening on one laptop running Ubuntu 10.04 and another running Ubuntu 11.04.) I have tried setting CPU usage both from the web page and in local preferences, and neither seems to have any effect when these betas are running. I'm going to let them finish if they have less than an hour left, but will abort the others. :( Rather than abort, you may want to lower # of cores to use (if you are not running other projects), or manually suspend Betas so that some cores are freed up. It may be that these WUs are using multiple threads without the Boinc master being aware of it (actually running on multiple cores).
Murphy
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sk..
Master Cruncher http://s17.rimg.info/ccb5d62bd3e856cc0d1df9b0ee2f7f6a.gif Joined: Mar 22, 2007 Post Count: 2324 Status: Offline Project Badges: 
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BETA_ BETA_ ace80_ 0000000_ 3825_ 0-- i7-2600-Winx64 Pending Validation 29/07/11 20:23:47 29/07/11 23:38:54 1.97 58.1 / 0.0
What these stats don't show is the 13min difference between run time and elapsed time. Is a 6 or 7% time loss acceptable on a high end CPU? You decide. I'll crunch them anyway, but might do a bit of whingeing on the way. |
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JmBoullier
Former Community Advisor Normandy - France Joined: Jan 26, 2007 Post Count: 3715 Status: Offline Project Badges:
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As I reported earlier in this thread the CPU time of the last job of a WU is not added to the total. Since there are 8 jobs in the beta WUs currently running the loss is theoretically something about 12.5 % for each WU.
----------------------------------------This has to be fixed before going to production, same as the lack of CPU time reporting during most of the process. |
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kateiacy
Veteran Cruncher USA Joined: Jan 23, 2010 Post Count: 1027 Status: Offline Project Badges:
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kateiacy, I set my laptop to run at 70%, but sometimes it does get hot if I am running an application that also uses a lot of CPU. My solution is to just unplug the laptop for a few minutes to let it cool off. Unplugging the laptop (and letting it run on battery) will usually force the system to reduce power to the CPU (mine reduce it down to about 1/3 performance). Strange this is you still get the runtime, so the beta will actually take longer to finish This problem is specific to these betas. The two laptops run at reasonable temperatures when set to 60% CPU usage on lots of other WCG sciences. With these WUs, they go to 100% usage(as shown in "top") and the temperature goes too high. I also couldn't get them to suspend. THey'd keep running unless I shut down BOINC. These things happened on two different laptops, one running Ubuntu 10.04 and the other running Ubuntu 11.04. I've never had similar problems on either laptop. I think we need to warn crunchers about this. |
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sk..
Master Cruncher http://s17.rimg.info/ccb5d62bd3e856cc0d1df9b0ee2f7f6a.gif Joined: Mar 22, 2007 Post Count: 2324 Status: Offline Project Badges:
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71% 7mins loss, 60% 3min loss, 60% 1min 20sec loss, 43% 3min 20sec, 35% 5min loss. Different durations and checkpoints being tested perhaps?
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sk..
Master Cruncher http://s17.rimg.info/ccb5d62bd3e856cc0d1df9b0ee2f7f6a.gif Joined: Mar 22, 2007 Post Count: 2324 Status: Offline Project Badges:
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kateiacy, this is the nature of Beta testing. Not sure Beta's are really suited to laptops anyway, but I suppose it depends on the CPU and so on.
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mfbabb2
Senior Cruncher USA Joined: Feb 18, 2011 Post Count: 361 Status: Offline Project Badges:
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Unplanned, but Real World Test:
----------------------------------------Just had a brief power failure here. Both laptops went to internal batteries (who says they are not suitable for Beta Testing -- see above). Both Macs had to do a reboot. Betas resumed from last checkpoint and appear to continue running without problems.
Murphy
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yose-ue
Cruncher Joined: Dec 27, 2008 Post Count: 21 Status: Offline Project Badges:
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They seam to be taking a lot less time than I expected two have returned so far one at 1.12 hrs and the other at 1.30 hrs. The cpu time dose not increase until a checkpoint occurs it will remain at between 20 seconds and 30 seconds more than the checkpoint time. I am running ubuntu 11.04. The cpu time is updated at the time of the checkpoint.
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