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World Community Grid Forums
Category: Completed Research
Forum: Help Defeat Cancer
Thread: less points on hdc last weeks |
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Thread Status: Active Total posts in this thread: 11
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dennishoog
Cruncher Joined: Jun 7, 2006 Post Count: 5 Status: Offline Project Badges: 
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Hi,
since a week or 2/3 my claimed points are less than they used to be, about 40% less. I upgraded from boinc 5.4 to 5.8.16 but it doesn't make a difference. For instance, my laptop Centrino 1,7 claims more or the same as my core2duo t7200 2.0GHz for equal runtime. laptop runtime 2.23 claimed/received points 20.6 / 17.0 c2d runtime 3.06 , claimed /received 14.6 / 14.2 I would expect higher claims from a faster processor but actually I receive less point for almost an extra hour of runtime. I havent made any significant changes, and workunits are processed by both cores as well. Does anybody have a clue ? |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hello dennishoog,
You should get more points for more work. If you do not do more work, then . . . So the point is to find out why the Core 2 is not doing more than the laptop. The first thing is to check your throttle setting and make sure that it is set at 100%. Does BOINC Manager show that you are running 2 threads on your Duo? Lawrence |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I think this is just a misunderstanding.
Your c2d has two cores, as you noted. But each individual core, on its own, is slower than your laptop. So, if you take both work units done by the Duo (one on each core, as you noted) in this equation, you get: laptop runtime 2.23 claimed/received points 20.6 / 17.0 c2d runtime 3.06 , claimed /received 14.6 / 14.2 * 2 = 6 hours CPU time (still 3 hours by the wall clock) and 28.4 points. Does that make sense? |
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dennishoog
Cruncher Joined: Jun 7, 2006 Post Count: 5 Status: Offline Project Badges:
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Hello dennishoog, You should get more points for more work. If you do not do more work, then . . . So the point is to find out why the Core 2 is not doing more than the laptop. The first thing is to check your throttle setting and make sure that it is set at 100%. Does BOINC Manager show that you are running 2 threads on your Duo? Lawrence It's set to No Throttle and yes, its running on both cores according to boinc and the task manager |
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dennishoog
Cruncher Joined: Jun 7, 2006 Post Count: 5 Status: Offline Project Badges:
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I think this is just a misunderstanding. Your c2d has two cores, as you noted. But each individual core, on its own, is slower than your laptop. So, if you take both work units done by the Duo (one on each core, as you noted) in this equation, you get: laptop runtime 2.23 claimed/received points 20.6 / 17.0 c2d runtime 3.06 , claimed /received 14.6 / 14.2 * 2 = 6 hours CPU time (still 3 hours by the wall clock) and 28.4 points. Does that make sense? well I'm not sure, one cannot expect double points as to a single core I guess, but it should near it; otherwise the dang things would not really be scalable But, my point is that since two weeks I get less points for the same amount of processing time on the same pc, and I just look at the single results. I am not looking how many daily points I get, or if it gets enough processing time, because my total daytime seems to remain the same. e.g., an example from 2 weeks ago and one of a couple of days ago on the same machine (c2d 2.0): 03/01/2007 hrs 3.04 claimed/granted 36.0 / 38.6 03/12/2007 hrs 7.98 claimed/granted 32.9 / 36.2 points on an athlon X2 3800+ : 03/17/2007 hrs 1.37 claimed/granted 19.9 / 17.0 points on the centrino mobile 1,7: 03/15/2007 hrs 1.98 claimed/granted 18.3 / 16.5 it proves the X2 being faster than the laptop, and receiving the same points for less processing time. On the c2d it more than doubled the processing hours, but got almost the same points as it did with half of it two weeks ago. I think my machine has been benchmarked as a slower one. My points in the last couple of weeks have been dropping slowly Do you share my view ? -- This post has been edited for inappropriate language - nelsoc [Edit 1 times, last edit by Former Member at Mar 19, 2007 2:27:21 PM] |
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dennishoog
Cruncher Joined: Jun 7, 2006 Post Count: 5 Status: Offline Project Badges:
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found the benchmark option :
c2d: 18-Mar-07 00:19:55||Benchmark results: 18-Mar-07 00:19:55|| Number of CPUs: 2 18-Mar-07 00:19:55|| 886 floating point MIPS (Whetstone) per CPU 18-Mar-07 00:19:55|| 1850 integer MIPS (Dhrystone) per CPU centrino: 18/03/2007 00:22:08||Benchmark results: 18/03/2007 00:22:08|| Number of CPUs: 1 18/03/2007 00:22:08|| 1455 floating point MIPS (Whetstone) per CPU 18/03/2007 00:22:08|| 3047 integer MIPS (Dhrystone) per CPU this can't be happening right ?? |
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Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7581 Status: Recently Active Project Badges: 
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Do you have anything else running on the C2D when you run the benchmarks? If memory serves me correctly, your C2D appears to be benchmarking low. Try stopping everything else, then benchmarking.
----------------------------------------Cheers
Sgt. Joe
----------------------------------------*Minnesota Crunchers* [Edit 1 times, last edit by Sgt.Joe at Mar 19, 2007 7:06:29 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
My old AMD Sempron 3100+ running at 1.81 Ghz benchmarks at 1708 FLOPS and 3134 MIPS. So it is running at almost twice the speed of your Core 2. First, right-click on the bottom of your display and select Task Manager. Is anything running on it eating up cycles? If not then secondly, make sure you are not running ThreadMaster or any other utility program that limits CPU usage. Make sure that your BOINC applications are running at 97% - 99%.
If they are, then you will want to check temperatures to make sure your CPU is not being throttled back. This shouyld normmally only happen on laptops, but . . . . There are a number of system diagnostics in the Useful Utilities thread at http://www.worldcommunitygrid.org/forums/wcg/viewthread?thread=2490 Lawrence |
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dennishoog
Cruncher Joined: Jun 7, 2006 Post Count: 5 Status: Offline Project Badges:
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thanks all for the responses.
It's resolved as it had somthing to do with the throtteling (it is a mobile c2d on mini-itx board). Apparently the bios setting for speedstep was set to auto but the windows application could not switch off throtteling as I requested. It appeared to do so, but when checking with cpu-z it showed clearly it was running at half speed..... a no-brainer coming to think of it, but not at that time... so thanks again! |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hello, I also have problems with the points. It seems that getting points in dependent on the run time much more than on the speed of processing.
e.G. if I have a slow laptop with 60% throttle I get for a workunit in 14 hours done 483 points. (WCG points, not BOINC) If I run on my faster laptop a similar workunit done on 100% throttle in 11 hours 380 points. This means that I make more calculations, but get almost exactly the same points as a slow machine for the same runtime... So the WCG points seem mostly to take the runtime into account against the made calculations. Or have I made a thinking mistake somewhere?  |
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