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World Community Grid Forums
Category: Completed Research
Forum: Help Conquer Cancer
Thread: Four WU's at one CPU |
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Thread Status: Active Total posts in this thread: 13
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Thomas Klauset Aurdal
Advanced Cruncher Joined: Apr 27, 2007 Post Count: 69 Status: Offline Project Badges: 
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My PC with one CPU have always recieved only two WU's at a time. Now, for the first time it have recieved four WU's. I think it slows down the average processing speed. I know that I can abort it but I haven't done it because I think I will finish on schedule. However, my question is what is it that determines how many WU's it recieves? Is four WU's standard from now?
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Hi Thomas,
----------------------------------------Can you please go into the client message tab and scroll to the beginning where it says "Starting BOINC..." Copy about 35 lines from there and post in your reply. In the Tasks tab are all 4 counting time or how many? Having more tasks than actually running is what the client does. It goes out fetching new work before the current tasks finish, so it can continue without interruption on the next work units. Let us know
WCG
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Thomas Klauset Aurdal
Advanced Cruncher Joined: Apr 27, 2007 Post Count: 69 Status: Offline Project Badges:
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19.08.2010 20:34:10||Starting BOINC client version 6.10.58 for windows_intelx86
19.08.2010 20:34:10||log flags: file_xfer, sched_ops, task 19.08.2010 20:34:10||Libraries: libcurl/7.19.7 OpenSSL/0.9.8l zlib/1.2.3 19.08.2010 20:34:10||Data directory: C:\Documents and Settings\All Users\Programdata\BOINC 19.08.2010 20:34:10||Running under account HP_Administrator 19.08.2010 20:34:10||Processor: 2 GenuineIntel Intel(R) Atom(TM) CPU 230 @ 1.60GHz [Family 6 Model 28 Stepping 2] 19.08.2010 20:34:10||Processor: 512.00 KB cache 19.08.2010 20:34:10||Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss htt tm pni ssse3 cx16 nx lm tm2 movebe pbe 19.08.2010 20:34:10||OS: Microsoft Windows XP: Home x86 Edition, Service Pack 3, (05.01.2600.00) 19.08.2010 20:34:10||Memory: 1015.23 MB physical, 2.38 GB virtual 19.08.2010 20:34:10||Disk: 139.27 GB total, 122.34 GB free 19.08.2010 20:34:10||Local time is UTC +2 hours 19.08.2010 20:34:10||No usable GPUs found 19.08.2010 20:34:10|World Community Grid|URL http://www.worldcommunitygrid.org/; Computer ID 1119562; resource share 100 19.08.2010 20:34:10|World Community Grid|General prefs: from World Community Grid (last modified 01-Jan-1970 01:00:01) 19.08.2010 20:34:10|World Community Grid|Host location: none 19.08.2010 20:34:10|World Community Grid|General prefs: using your defaults 19.08.2010 20:34:10||Reading preferences override file 19.08.2010 20:34:10||Preferences: 19.08.2010 20:34:10|| max memory usage when active: 761.42MB 19.08.2010 20:34:10|| max memory usage when idle: 761.42MB 19.08.2010 20:34:11|| max disk usage: 10.00GB 19.08.2010 20:34:11|| don't use GPU while active 19.08.2010 20:34:11|| suspend work if non-BOINC CPU load exceeds 25 % 19.08.2010 20:34:11|| (to change preferences, visit the web site of an attached project, or select Preferences in the Manager) 19.08.2010 20:34:11||Not using a proxy 19.08.2010 20:34:11||Suspending computation - initial delay 19.08.2010 20:36:10|World Community Grid|Restarting task X0000034411139200406181453_1 using hcc1 version 608 19.08.2010 20:36:10|World Community Grid|Restarting task X0000034411139200406181058_1 using hcc1 version 608 19.08.2010 20:43:12||Suspending computation - CPU usage is too high 19.08.2010 20:43:22||Resuming computation 19.08.2010 20:44:32||Suspending computation - CPU usage is too high The case is that in the client there are currently four WU's. Historically there have only been two WU's. This is a new phenomena. Two of them are continually processing. The two others have processed for some time but are on pause. The message: Paused: Other work running. |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Hi Thomas,
----------------------------------------Guessing that you received a couple of jobs with a shorter deadline? If so and the computer is part time, but usually returns work within a couple of days of receipt, the client will probably have prioritized the jobs. Quickest to give us a copy of the 4 jobs there are now on the machine is going to My Grid > Result Status and filter In Progress and Device Name (if you have more computers), then copy those HCC job info lines into your reply. We'll then confirm with you as to what we understand from that. cheers PS: From these log lines with a new client function 19.08.2010 20:34:11|| suspend work if non-BOINC CPU load exceeds 25 % ... 19.08.2010 20:43:12||Suspending computation - CPU usage is too high 19.08.2010 20:43:22||Resuming computation 19.08.2010 20:44:32||Suspending computation - CPU usage is too high your computer will be frequently pausing when you're using the computer. The WCG techs tested and found that 75% is still a very save value for those doing 'regular' use. You can change that value in the Advanced Menu > Preferences Processor Tab > Whilst processor usage is less than ... %, then OK. Change it when you find that BOINC is interfering at that level, but it should not. I've got it on 100% and still not noticing even when running streaming video.
WCG
----------------------------------------Please help to make the Forums an enjoyable experience for All! [Edit 2 times, last edit by Sekerob at Aug 23, 2010 11:17:56 AM] |
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Thomas Klauset Aurdal
Advanced Cruncher Joined: Apr 27, 2007 Post Count: 69 Status: Offline Project Badges:
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However, I aborted it and started processing C4CW. I have another question from what you wrote. It has to do with CPU usage. You wrote: The WCG techs tested and found that 75% is still a very save value for those doing 'regular' use.
----------------------------------------Aren't I using 100% CPU as I thought? I downloaded the software. GridMaxCPU and user defined at 100%. Correct when I want to use 100% CPU capacity? http://www.worldcommunitygrid.org/help/viewTopic.do?shortName=cpuuse [Edit 1 times, last edit by Thomas Klauset Aurdal at Aug 26, 2010 2:15:44 PM] |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Martin, you upgraded to BOINC 6.10.58 and that has a default to stop computing when U or your system for NON-BOINC processes uses more than 25%. Follow my previous post where to find this and change it to 100% for before that seemed to be OK for you. Going to the Advanced view and opening the Activity Menu, then selecting Run Always also will ensure maximum contribution.
----------------------------------------GridMAXCPU worked for the old UD Agent, but not for BOINC. It's got it's own controls. Aborting work that is already computing is a waste. Better is to let tasks you have finish. Aborting causes extra copies to be transmitted as well to others who then have to do the repair work.
WCG
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Thomas Klauset Aurdal
Advanced Cruncher Joined: Apr 27, 2007 Post Count: 69 Status: Offline Project Badges:
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Thanks for this exceptionally good advice. I weren’t aware of that GridMAXCPU only worked for UD Agent. I will delete the software.
BOINC: I always upgrade to the latest version and are currently using 6.10.58. I clicked the Advanced View and then selected Activity and Run Always. Now processing on 100% CPU. However I don’t think I have lost out years of valuable work because when I visited the Windows Menu and CPU Usage the graph is showing movement from 33%-40% as it always have when I have used user defined 100% as you told only worked on the UD Agent. If that is correct and I haven’t lost out time/work that’s good news. However it’s scary that the Windows Menu and CPU Usage doesn’t show a 100% use. I also edited the following: Processor Usage: While processor usage is less than: (Changed from 25%-0%). And finally under other options: Use at most 100% CPU time. Abortion: Thanks. I supposed that aborting WU’s might cause complications for other WCG members and have always tried to avoid it. The few times I have aborted WU’s it have been because the WU’s aren’t completed on schedule. I will use it more wisely from now on. |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
On a duo computer 33-40% is really 66-80%, which is a reasonable number when using the system for other things. It's a Windows thing to divide the reported CPU percent usage by the number of cores. The overall proccessing graph will have shown the sum. In Linux with Top command you actually get the percentage for the individual cores on the scale of 0-100.
----------------------------------------BTW, the UD agent recorded and reported 100% wallclock time even though the GridMAXCPU was set to allow use of a lower percent of the CPU time. Even if set to 25% percent the daily computing would amount to about 6 hours worth, but 24 hours would be what you saw on the statistics. BOINC 6.10.58 shows in the client wallclock time too called Elapsed, but what's reported to WCG is true CPU time. The difference you can see by selecting a running task in the BOINC Manager advanced view and hitting the properties button on the left which produces a pop-up with extended task info. Anyway, by the read of your last post, you're now full throttle, so you might see an increase in reported time if your computer was not doing so before. Happy crunching.
WCG
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Thomas Klauset Aurdal
Advanced Cruncher Joined: Apr 27, 2007 Post Count: 69 Status: Offline Project Badges:
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I have to add that if the GridMaxCPU aren't of any use to BOINC, then why don't delete the reference to it under the help section: under CPU Usage? It disoriented me. However, the URL to the site where to download it doesn't work now. I don't think I have two cores. I have an Intel Atom CPU.
----------------------------------------[Edit 1 times, last edit by Thomas Klauset Aurdal at Aug 27, 2010 2:19:13 PM] |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Martin,
----------------------------------------I looked at your link too yesterday and wondered why it's still there and concluded that maybe it's a misunderstanding. Out of the box, the current recommended WCG custom BOINC client 6.2.28 has a default too of 60% and "Run based on preferences". It was more for a general temperature consideration than for shielding against impairment of the user experience. Laptops, particularly those that build up dust inside could run hot, so WCG decided to apply an across the board safety. Does that answer your concern?
WCG
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