Quirks of credits and CPU time (on Windows and Linux boxes)
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Message boards : Number crunching : Quirks of credits and CPU time (on Windows and Linux boxes)

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Profile UBT - Timbo
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Joined: 30 Dec 13
Posts: 4
Credit: 65,845
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Message 18715 - Posted: 9 Oct 2016, 18:46:06 UTC
Last modified: 9 Oct 2016, 18:49:37 UTC

Hi all

I wonder if anyone can throw some light on TWO inconsistencies:

1) The Run time and credits offered on Windows boxes (XP and 7) is quite varied.

I've received tasks that take as little as 994 seconds as well as others that take up to 20,001 seconds.

But the credits offered are not proportional to the Run time...a 994 sec task earned 6.5 credits, while a 14,324 task earned just 52 credits - a difference of a factor of 3 against the higher run time.

From a sample size of 60 tasks on the same Windows PC, the credit rate seems to vary from 0.003 to 0.017 credits per second :-(


2) On Windows boxes the CPU time is not close to the Run time...an in some cases it is reported as being "0.00" seconds!! However, on my Linux boxes, the two are very similar.

Also Linux boxes do not suffer from a variable credit rate when compared to Run time...Linux boxes seem to average out at about 0.011 credits per second (of Run time).

Anyone noticed the same inconsistencies ?

regards
Tim

for example:

Windows:


Task Work unit Science info Sent Time reported Run time CPU time
Status (sec) (sec) Credit Application
27847497 13820685 View 8 Oct 2016, 12:32:03 UTC 8 Oct 2016, 17:36:30 UTC Completed and validated 18,171.94 0 324.07 ICT Protein Structure Prediction(2nd Generation) v1.21
27847496 13820684 View 8 Oct 2016, 12:32:03 UTC 8 Oct 2016, 22:29:10 UTC Completed and validated 17,572.39 0 277.73 ICT Protein Structure Prediction(2nd Generation) v1.21
27846425 13819627 View 4 Oct 2016, 16:47:52 UTC 4 Oct 2016, 18:59:27 UTC Completed and validated 3,751.08 2,847.42 38.57 ICT Protein Structure Prediction(2nd Generation) v1.21
27846372 13819574 View 4 Oct 2016, 16:47:52 UTC 4 Oct 2016, 18:25:39 UTC Completed and validated 2,770.25 2,167.42 28.46 ICT Protein Structure Prediction(2nd Generation) v1.21
27846423 13819625 View 4 Oct 2016, 16:47:52 UTC 4 Oct 2016, 19:04:53 UTC Completed and validated 3,576.66 2,424.98 36.43 ICT Protein Structure Prediction(2nd Generation) v1.21
27823253 13800507 View 15 Sep 2016, 20:34:17 UTC 16 Sep 2016, 1:18:26 UTC Completed and validated 13,251.94 0 89.93 ICT Protein Structure Prediction(2nd Generation) v1.21
27823843 13705608 View 15 Sep 2016, 22:27:04 UTC 15 Sep 2016, 22:44:33 UTC Completed and validated 994.28 0.02 6.5 ICT Protein Structure Prediction(2nd Generation) v1.21
27847492 13820680 View 8 Oct 2016, 12:32:03 UTC 9 Oct 2016, 10:35:04 UTC Completed and validated 18,888.72 17,219.13 106.78 ICT Protein Structure Prediction(2nd Generation) v1.21
27860014 13833192 View 8 Oct 2016, 23:58:12 UTC 9 Oct 2016, 9:39:26 UTC Completed and validated 1,666.86 0 9.24 ICT Protein Structure Prediction(2nd Generation) v1.21
27847491 13820679 View 8 Oct 2016, 12:32:03 UTC 9 Oct 2016, 10:40:18 UTC Completed and validated 20,001.13 18,283.98 107.14 ICT Protein Structure Prediction(2nd Generation) v1.21]


Linux:


27908685 13881788 View 9 Oct 2016, 13:43:28 UTC 9 Oct 2016, 14:09:21 UTC Completed and validated 770.26 762.48 8.43 ICT Protein Structure Prediction(2nd Generation) v1.21
27909230 13882332 View 9 Oct 2016, 13:52:07 UTC 9 Oct 2016, 14:25:32 UTC Completed and validated 978.11 970.98 10.64 ICT Protein Structure Prediction(2nd Generation) v1.21
27909231 13882333 View 9 Oct 2016, 13:52:07 UTC 9 Oct 2016, 14:22:13 UTC Completed and validated 967.06 959.69 10.51 ICT Protein Structure Prediction(2nd Generation) v1.21
27909237 13882339 View 9 Oct 2016, 13:48:57 UTC 9 Oct 2016, 14:19:01 UTC Completed and validated 957.74 951.22 10.43 ICT Protein Structure Prediction(2nd Generation) v1.21
27909672 13882774 View 9 Oct 2016, 13:56:18 UTC 9 Oct 2016, 14:37:42 UTC Completed and validated 965.43 955.38 10.82 ICT Protein Structure Prediction(2nd Generation) v1.21
27910077 13883178 View 9 Oct 2016, 14:06:12 UTC 9 Oct 2016, 14:47:08 UTC Completed and validated 1,616.02 1,604.85 18.08 ICT Protein Structure Prediction(2nd Generation) v1.21


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Message boards : Number crunching : Quirks of credits and CPU time (on Windows and Linux boxes)