Message boards :
Number crunching :
Why difficult Points for the same time
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Author | Message |
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Send message Joined: 12 Nov 06 Posts: 4 Credit: 501,420 RAC: 2 |
Hello, i have any WU's, ex: sse3 (5825354; 21,287.58 sec ; 165.92 points ) sse2 (5852212; 21,204.30 sec; 104.85 points ) pni (5887555; 21,290.52 sec; 166.24 points ) for the same Workime i became different Points. WHY????? Tom |
Send message Joined: 27 Sep 08 Posts: 810 Credit: 654,554,944 RAC: 253,993 |
I'd say the SSE3 & PNI ones are within experiment error. sse2 one is lower because your wingman wash shorter CPU time. the credit awarded is an average of the 2 computers times so it can vary due to the averaging process. |
Send message Joined: 12 Nov 06 Posts: 4 Credit: 501,420 RAC: 2 |
Hello, the WU 5852212 my Wingman have 19,457.10 sec. I have 21,204.30 sec. Ok. But why make thats a different from 60 Points ? Tom |
Send message Joined: 27 Sep 08 Posts: 810 Credit: 654,554,944 RAC: 253,993 |
It does seem to be quite a few point difference for not much time difference. I don't have a good explanation of why though. I have one here that's a much bigger spread but not so much on points: http://lhcathomeclassic.cern.ch/sixtrack/workunit.php?wuid=6140477 Here's a huge one! http://lhcathomeclassic.cern.ch/sixtrack/workunit.php?wuid=6146677 Maybe it's an SSE2 vs SSE3 thing? |
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