climateprediction.net (CPDN) home page
Thread 'Is that possible? (inside)'

Thread 'Is that possible? (inside)'

Message boards : Number crunching : Is that possible? (inside)
Message board moderation

To post messages, you must log in.

AuthorMessage
old_user92466

Send message
Joined: 12 Aug 05
Posts: 9
Credit: 1,164,760
RAC: 0
Message 30096 - Posted: 20 Aug 2007, 12:13:47 UTC

Time Sent (UTC) Host ID Result ID Result Name Phase Timestep CPU Time (sec) Average (sec/TS)
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 440,640 1,148,109 2.6055
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 414,720 1,080,665 2.6058
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 388,800 1,013,473 2.6067
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 362,880 945,979 2.6069
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 336,960 878,185 2.6062
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 311,040 810,794 2.6067
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 285,120 743,449 2.6075
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 259,200 675,504 2.6061
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 233,280 607,817 2.6055
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 207,360 540,892 2.6085
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 181,440 473,281 2.6085
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 155,520 405,681 2.6085
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 129,600 337,638 2.6052
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 103,680 270,346 2.6075
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 77,760 203,124 2.6122
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 51,840 135,938 2.6223
16 Aug 2007 10:52:58 297298 6700687 hadcm3inct_cni4_1920_160_75870664_1 1 25,920 68,262 2.6336

taken from http://climateapps2.oucs.ox.ac.uk/cpdnboinc/result.php?resultid=6700687

and the other his stats also very strange

http://climateapps2.oucs.ox.ac.uk/cpdnboinc/result.php?resultid=6604808
ID: 30096 · Report as offensive     Reply Quote
Profilegeophi
Volunteer moderator

Send message
Joined: 7 Aug 04
Posts: 2187
Credit: 64,822,615
RAC: 5,275
Message 30097 - Posted: 20 Aug 2007, 13:18:15 UTC

I assume what you think appears strange is the large number of trickles accumulated on a single day? Looking at http://climateapps2.oucs.ox.ac.uk/cpdnboinc/trickle.php?resultid=6604808 it would seem that the PC is only allowed to connect to the internet periodically, so large numbers of trickles are uploaded upon these connections. It seems OK to me.
ID: 30097 · Report as offensive     Reply Quote
old_user92466

Send message
Joined: 12 Aug 05
Posts: 9
Credit: 1,164,760
RAC: 0
Message 30098 - Posted: 20 Aug 2007, 13:28:47 UTC - in response to Message 30097.  

Hmm, I began thinking that is was cheating or something...

ID: 30098 · Report as offensive     Reply Quote
ProfileIain Inglis

Send message
Joined: 9 Jan 07
Posts: 467
Credit: 14,549,176
RAC: 317
Message 30099 - Posted: 20 Aug 2007, 13:51:40 UTC
Last modified: 20 Aug 2007, 13:54:57 UTC

Sometimes, if you look at the top computers list, you\'ll see machines that have a huge but short-lived RAC due to uploading trickles in batches. One one occasion, there was a machine that had uploaded all 160 trickles in one go! That\'s slightly risky, because the server might conclude that the model had been abandoned and would then re-issue it for another user to crunch. However, the machine did get its moment of glory.
ID: 30099 · Report as offensive     Reply Quote
Profilemo.v
Volunteer moderator
Avatar

Send message
Joined: 29 Sep 04
Posts: 2363
Credit: 14,611,758
RAC: 0
Message 30101 - Posted: 20 Aug 2007, 15:55:37 UTC

AFAIK the only instance of cheating ever to emerge on cpdn was the Wate account earlier this year, though something similar was attempted once or twice before that on Seti. We made the Wate affair public in the hope that crunchers of all projects would be vigilant and question anything they find that appears unusual and not easily explained. So this sort of post by Tasiziso is reasonable and useful.
Cpdn news
ID: 30101 · Report as offensive     Reply Quote

Message boards : Number crunching : Is that possible? (inside)

©2024 cpdn.org