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Former Member
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Getting way too many CPU tasks

Since starting to run GPU tasks I have been getting way too many CPU tasks along with them.

I have DDDT2 and DSFL selected and allow other tasks

additional work buffer was set to 0.5 days, and yesterday I had to abort about 150 DSFL WU's, so I set buffer to 0.05 days, tonight I had to abort about another 150. Trying 0 days buffer now. Don't see it posted that anyone else is having this problem, perhaps I missed it, or have something set wrong elsewhere ?

The number of CPU tasks is enough to stop GPU work and run all the CPU tasks at high priority,other than that, it runs great when not flooded with WU's

---- I thought maybe benchmarks were screwy, but seem ok

11/11/2012 6:54:27 PM 2806 floating point MIPS (Whetstone) per CPU
11/11/2012 6:54:27 PM 5855 integer MIPS (Dhrystone) per CPU


and system startup messages i showing hardware and BOINC version

11/11/2012 6:51:53 PM Starting BOINC client version 6.10.58 for windows_x86_64
11/11/2012 6:51:53 PM log flags: file_xfer, sched_ops, task
11/11/2012 6:51:53 PM Libraries: libcurl/7.19.7 OpenSSL/0.9.8l zlib/1.2.3
11/11/2012 6:51:53 PM Data directory: C:\ProgramData\BOINC
11/11/2012 6:51:53 PM Running under account Steve
11/11/2012 6:51:53 PM Processor: 4 GenuineIntel Intel(R) Core(TM)2 Quad CPU Q8400 @ 2.66GHz [Family 6 Model 23 Stepping 10]
11/11/2012 6:51:53 PM Processor: 2.00 MB cache
11/11/2012 6:51:53 PM Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss htt tm pni ssse3 cx16 sse4_1 nx lm vmx tm2 pbe
11/11/2012 6:51:53 PM OS: Microsoft Windows 7: x64 Edition, Service Pack 1, (06.01.7601.00)
11/11/2012 6:51:53 PM Memory: 8.00 GB physical, 8.01 GB virtual
11/11/2012 6:51:53 PM Disk: 29.70 GB total, 2.65 GB free
11/11/2012 6:51:53 PM Local time is UTC -7 hours
11/11/2012 6:51:54 PM NVIDIA GPU 0: GeForce GTX 260 (driver version 29573, CUDA version 4020, compute capability 1.3, 896MB, 560 GFLOPS peak)
11/11/2012 6:51:54 PM NVIDIA GPU 1: GeForce GTX 260 (driver version 29573, CUDA version 4020, compute capability 1.3, 896MB, 537 GFLOPS peak)
11/11/2012 6:51:54 PM No general preferences found - using BOINC defaults
11/11/2012 6:51:54 PM Preferences:
11/11/2012 6:51:54 PM max memory usage when active: 4095.25MB
11/11/2012 6:51:54 PM max memory usage when idle: 7371.44MB
11/11/2012 6:51:54 PM max disk usage: 2.55GB
11/11/2012 6:51:54 PM don't use GPU while active
11/11/2012 6:51:54 PM suspend work if non-BOINC CPU load exceeds 25 %
11/11/2012 6:51:54 PM (to change preferences, visit the web site of an attached project, or select Preferences in the Manager)
11/11/2012 6:51:54 PM Found project_init.xml for http://www.worldcommunitygrid.org/
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[Edit 4 times, last edit by Former Member at Nov 15, 2012 5:31:09 AM]
[Nov 15, 2012 5:13:26 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Ingleside
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Re: Getting way too many CPU tasks

11/11/2012 6:51:53 PM Starting BOINC client version 6.10.58 for windows_x86_64

Upgrade to v7.0.28 or later and your problem with too much work should go away.
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"I make so many mistakes. But then just think of all the mistakes I don't make, although I might."
[Nov 15, 2012 5:53:05 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Former Member
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Re: Getting way too many CPU tasks

Your ADDITIONAL work buffer was set to 0.5, but what is yourMAIN one set to?
[Nov 15, 2012 5:55:17 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Former Member
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Re: Getting way too many CPU tasks

Steven,

If you open up the BOINC Data Dir, client_state.xml and search for the first Worldcommunitygrid line, then after the first <duration_correction_factor> entry, what is the value that has? A client that crunches exactly as per benchmark usually has one somewhere around 1.000000. (Mine has 1.46 ATM due the elongation of the HCC I guess or some other tasks that ran longer than originally projected].

At any rate, the maximum "In Progress" is 40 per CPU processor core [160 for a quad]. Can't remember the GPU exactly, but think that was latest set to ~250.

Yes, upgrading to 7 lets the problem go away [you cant go back to 6 without loosing work that's not finished/reported]. A 0.0 connect and 0.0 additional for 6.10.58 solves it too. Whether 7.0.28 or 7.0.38 [latest beta], no matter how you look at upgrading to 7, a new "recommended" will arrive in the near future... one that also handles properly on W8 [WCG is testing and security auditing the code momentarily]. W* specifically requires 7.0.31 to install correctly, which should be done whilesigned in under a local account, *not* a Microsoft account.
[Nov 15, 2012 8:27:13 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Former Member
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Re: Getting way too many CPU tasks

P.S. Upgrading... as so often happens, Berkeley is off the air again [noticed this yesterday too]. It's the presumed reason why WCG started to host their own skinned kit. Try later.
[Nov 15, 2012 8:30:01 AM]   Link   Report threatening or abusive post: please login first  Go to top 
tmedve
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Re: Getting way too many CPU tasks

Now I am confused. I know how to set the "additional work buffer", but where does one set the "main work buffer". I did not realize that there were 2 separate things or that they were really not the same thing. Thanks.
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[Nov 15, 2012 3:24:31 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Former Member
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Re: Getting way too many CPU tasks

The "Connect every..." in client 6 or earlier or "Minimum work buffer" in client 7 is the primary buffer driver. The "[Max] Additional work buffer" is secondary, where the functionality was changed between version 6 and 7 [The MinB/MaxAB extensively explained in a draft FAQ, I think to be lurking in the Website support forum]. In a nutshell, the MaxAB in v7 will not be regarded until the cache drops below the MinB. In practice, I've discontinued using that option... set it to 0.0. Just MinB takes care of a continuous backfill [when the selected projects have work available].
[Nov 15, 2012 3:44:15 PM]   Link   Report threatening or abusive post: please login first  Go to top 
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Re: Getting way too many CPU tasks

Actually the draft FAQ describing how it was, and how it will be / is [at the time] sits in the BOINC Support forum: https://secure.worldcommunitygrid.org/forums/wcg/viewthread_thread,32530
[Nov 15, 2012 3:47:16 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Former Member
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Re: Getting way too many CPU tasks

Thank you all for the help. The connect every was 0.10 days, and it has probably changed since I posted, but have been pretty hectic, now the dcf is <duration_correction_factor>1.435338</duration_correction_factor>
Seems to be ok with 0 days cache, I wil upgrade the client this weekend.

Thanks ;)
[Nov 16, 2012 1:37:36 PM]   Link   Report threatening or abusive post: please login first  Go to top 
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