Message boards :
Number crunching :
question about claimed credit
Message board moderation
Author | Message |
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uba36 Send message Joined: 17 Jul 02 Posts: 74 Credit: 1,159,280 RAC: 0 |
Why does the fastet machine does't claim the highest credit? See link: WU 4772040 Just compare CPU time and claimed credit! |
Keck_Komputers Send message Joined: 4 Jul 99 Posts: 1575 Credit: 4,152,111 RAC: 1 |
Theoretically all computers should claim very nearly the same credit for the same workunit. The benchmarking code needs some work even though it does work much better now than it has in the past. It also may be impossible to get really accurate numbers due to the way newer processors slow themselves down to prevent overheating. BOINC WIKI BOINCing since 2002/12/8 |
Ned Slider Send message Joined: 12 Oct 01 Posts: 668 Credit: 4,375,315 RAC: 0 |
Credit is claimed according to the following formula: claimed credit = ([whetstone]+[dhrystone])/1000 * 100 / (2 * secs_per_day) * wu_cpu_time or to simplify the equation, claimed credit = ([whetstone]+[dhrystone]) * wu_cpu_time / 1728000 Note: wu_cpu_time is the time taken to process the unit in seconds. Ned *** My Guide to Compiling Optimised BOINC and SETI Clients *** *** Download Optimised BOINC and SETI Clients for Linux Here *** |
blocko Send message Joined: 4 May 00 Posts: 2 Credit: 502,607 RAC: 0 |
Why then does my silly computer keep claiming zero credits for every workunit? Thankfully SETI see through my computer's false modesty and hand out a seemingly reasonable number of ~30 per unit. > Credit is claimed according to the following formula: > > claimed credit = ([whetstone]+[dhrystone])/1000 * 100 / (2 * secs_per_day) * > wu_cpu_time > > or to simplify the equation, claimed credit = ([whetstone]+[dhrystone]) * > wu_cpu_time / 1728000 > > Note: wu_cpu_time is the time taken to process the unit in seconds. > > Ned > > > <img src="http://www.setisynergy.com/images/stats/comb-516.jpg" /> |
Keck_Komputers Send message Joined: 4 Jul 99 Posts: 1575 Credit: 4,152,111 RAC: 1 |
>Why then does my silly computer keep claiming zero credits for every >workunit? Thankfully SETI see through my computer's false modesty and hand >out a seemingly reasonable number of ~30 per unit. Try rerunning your benchmarks manually. The last automatic run may have had problems. BOINC WIKI BOINCing since 2002/12/8 |
Divide Overflow Send message Joined: 3 Apr 99 Posts: 365 Credit: 131,684 RAC: 0 |
> Why then does my silly computer keep claiming zero credits for every workunit? > Thankfully SETI see through my computer's false modesty and hand out a > seemingly reasonable number of ~30 per unit. Your computers are hidden, so we can't see any information on what client version and computer type you have. What are the basics of your system? CPU, OS, BOINC version? Anything exotic going on that would produce the nonstandard response? Since BOINC takes the middle claimed credit value and awards it to all validated results as awarded credit, the fact that your machine claims 0 means it can be hurting the credit scores being granted out there. If even just two people in your same situation were to be assigned the same WU, you would all be given 0 credit for successfully completing the WU! This is a flaw in the credit system, and accurate benchmarking should be an important issue for the project. |
Paul Knibbs Send message Joined: 21 Mar 01 Posts: 5 Credit: 194,839 RAC: 0 |
Amen to that--see my thread about a machine with a benchmark of 113,000! I reckon the claimed credit is going be 1000+ on that one... |
blocko Send message Joined: 4 May 00 Posts: 2 Credit: 502,607 RAC: 0 |
OK I'll try manually re-running my benchmarks. I'll unhide my computer so you can stickybeak, but as far as I know it is a stock-standard PC. Nothing weird at all. --- - 2004-12-07 18:59:13 - Running CPU benchmarks --- - 2004-12-07 19:00:14 - Benchmark results: --- - 2004-12-07 19:00:14 - Number of CPUs: 1 --- - 2004-12-07 19:00:14 - 526 double precision MIPS (Whetstone) per CPU --- - 2004-12-07 19:00:14 - 1310 integer MIPS (Dhrystone) per CPU --- - 2004-12-07 19:00:14 - Finished CPU benchmarks OK done - nothing weird there. Looks the same as last time. <img src="http://www.setisynergy.com/images/stats/comb-516.jpg" /> |
Divide Overflow Send message Joined: 3 Apr 99 Posts: 365 Credit: 131,684 RAC: 0 |
Well, good news. Your last WU result actually claimed some credit. I'd pay attention to the next couple that go through, but it may have been a one time glitch. |
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