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World Community Grid Forums
Category: Support
Forum: BOINC Agent Support
Thread: odd benchmarks |
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Thread Status: Active Total posts in this thread: 4
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
My benchmarks on my new computer had been 1887/5200. I hit to retry benchmarks about one hour after that reading, and now they are 1887/2400. Nothing has changed on my system and no new processes are running. It seems like BOINC is only benchmarking one of my two cores. And my points claimed have dropped by about 1/3. Any ideas?
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hello sedgecom,
First, BOINC is supposed to only benchmark a core. If you have 2 cores, you can run 2 threads and get twice as many points. Similarly, 4 cores lets you get 4 times as many points. You choose how many cores you want to run BOINC in your preferences. It looks as though something interfered with the Dhrystone benchmark (integer) but not with the Whetstone benchmark (floating-point). Maybe you were running 2 threads of BOINC and BOINC Manager interrupted one thread to run the benchmarks but the Dhrystone benchmark was run on the core with your second thread, sharing the core. This would have made it run at half speed. After a reboot, the benchmarks would run before any application threads started. A manual benchmark could be troublesome on a dual core system. Just a guess on my part. My BOINC system is a single core CPU. Lawrence |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Best to test is suspend all the projects, then force a benchmark. Whatever core it runs on, that value is used for all cores on the same box.
----------------------------------------In case interested, sum the Dhry/Whetstone values and divide by 480 and u get your CPU hourly claim. Take the number when a work unit completes, multiply by the CPU time used, and u know what's going to show in the Result Status page. cheers
WCG
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hmmm.
----------------------------------------In my experience - the more core's - the wilder the result.... Just commissioned a Kentsfield. Loaded Boinc up and ran a manual benchmark *before* joining any project. Got scores. Ran again. Got score - 25%. Ran again. Got score - 50% Ran again. Got score + 100%. There was no other activity at the time. I'm of the opinion it's just a random number generator. The sooner WCG give a fixed amount of credit per WU, the better. Jonathan [Edit 1 times, last edit by Former Member at Nov 24, 2006 8:05:32 PM] |
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