Message boards :
Number crunching :
30 hours of work availability - did u get some?
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 Ocean Archer Send message Joined: 13 Jul 05 Posts: 143 Credit: 263,300 RAC: 0 |
Hi there KAMasud -- Glad you're still with us and congratulations on getting some of the recent work. As for the difference in times - that is probably due to the makeup of the work itself. I, too, am seeing many of the WorkUnits completing in 60-70% of the time originally shown in the "To Completion Time" column. I do not run any "optimized" software, nor do I overclock my machines, so I can only assume one of the following: (1) The benchmark test LHC uses to determine speed needs to be adjusted slightly. (2) I might have had a WU that took a very long time to complete, and the program adjusted the times according to that WU. (3) I'm not sure if a returned WU labelled with "Client Error" or "Computing Error" will impact that estimate, but I guess its possible. Let me take this opportunity of the Holiday Season to extend to you and your family wishes for Peace, Health, Happiness and Long-Life ... If I've lived this long, I've gotta be that old |
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sysfried Send message Joined: 27 Sep 04 Posts: 282 Credit: 1,415,417 RAC: 0 |
Maybe I can put some light on the short runtimes of many of the latest WU's. I've been with LHC for quite some time, so I know what it's about..... The time calculated as "calculated time" depends on how many "turns" you've got with each WU. This is a variable only the Admins change prior to creating WU's. The Sixtrack software simulates electrons travelling within the LHC. Once in a while one or more electrons crash into the wall and are subtracted from the calculation and this leads into less electrons travelling in the next turn. So when you start with X electrons at, let's say 1.000.000 turns, you get Z time needed. This will vary on your cpu. Of course faster cpu's will calculate the one million turns faster than a slow one. If too many electrons crash, the whole simulation ends immediately or is calculated within minutes if not seconds. I hope this helps. Sincerely, Sysfried PS: @River~~ any corrections to my info? |
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Ocean Archer Send message Joined: 13 Jul 05 Posts: 143 Credit: 263,300 RAC: 0 |
Thank you SysFried, for that explaination. I appreciate your comments ... If I've lived this long, I've gotta be that old |
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Send message Joined: 7 Oct 06 Posts: 114 Credit: 23,192 RAC: 0 |
:-) Thats what confused me? To Completion Time was 5 hours but all those WU's 4 some reason completed in less then 10 seconds? :-) So i suppose it was an honest mistake but i still feel icky about them.:-( :-) Any way "Merry Cristmas and a Happy New Year 2 U and UR family 2:-) Regards Masud. Hi there KAMasud -- 
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Send message Joined: 7 Oct 06 Posts: 114 Credit: 23,192 RAC: 0 |
:-) LoL dont tell me all my electrons crashed at start up? :-) Anyways thank you very much for that explanation:-) Regards Masud.
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CoM Send message Joined: 29 Sep 04 Posts: 42 Credit: 11,505,632 RAC: 0 
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There are actually protons!! If electrons would run on proton-synchroton settings, they will get lost very fast!! :) 
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Send message Joined: 7 Oct 06 Posts: 114 Credit: 23,192 RAC: 0 |
:-) Electrons or protons? Got another load in which they crashed twenty minutes from start up:-) Getting used to them :-) Someone may have adjusted the magnets a bit to much,:-( Regards Masud.
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CoM Send message Joined: 29 Sep 04 Posts: 42 Credit: 11,505,632 RAC: 0
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:-) Electrons or protons? Got another load in which they crashed twenty minutes from start up:-) Getting used to them :-) Someone may have adjusted the magnets a bit to much,:-( Protons, of course!! LHC stands for Large Hadron Collider, a proton is a hadron.
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Gary Roberts Send message Joined: 22 Jul 05 Posts: 72 Credit: 3,962,626 RAC: 0 |
When I went to school in the 50s and 60s, we were taught that the basic indivisible building blocks of matter were protons, neutrons and electrons. Now there is this mind blowing array of exotic theoretical particles, apparently all experimentally observed with the single exception of the Higgs boson. It will be very interesting to see what happens if the LHC doesn't finally unmask this little sucker :). Cheers, Gary. |
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Send message Joined: 7 Oct 06 Posts: 114 Credit: 23,192 RAC: 0 |
:-) Of course :-) Just leg pulling, LoL :-)Higgs boson? YuuuP! wont that be exciting :-) wonder what they will find after that? we learned all about Rutherford? now the sky is the limit :-) Regards Masud.
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