climateprediction.net (CPDN) home page
Thread 'Another Weird Result...!!!'

Thread 'Another Weird Result...!!!'

Message boards : Number crunching : Another Weird Result...!!!
Message board moderation

To post messages, you must log in.

AuthorMessage
STE\/E

Send message
Joined: 15 Aug 04
Posts: 57
Credit: 10,360,323
RAC: 1,102
Message 3070 - Posted: 5 Sep 2004, 10:27:37 UTC
Last modified: 5 Sep 2004, 10:36:18 UTC

Seems this Trickle Result got reported Twice about 3 minutes apart in my Account Data...I only received credit once for it though...Dang ;)

Errrrmmm, D'oh, amend that, I may have actually received Credit Twice for it .. :0 .. I'm not really sure. But I noticed another credit increase shortly after the first Credit increase and that shouldn't have happened because the 2 WU's I'm running at once on that computer usually Report Results about an hour apart...???

05 Sep 2004 10:12:33 11766 01kv_200027032_0 2 226842 1317765 2.7109
05 Sep 2004 10:09:42 11766 01kv_200027032_0 2 226842 1317765 2.7109

ID: 3070 · Report as offensive     Reply Quote
old_user1
Avatar

Send message
Joined: 5 Aug 04
Posts: 907
Credit: 299,864
RAC: 0
Message 3075 - Posted: 5 Sep 2004, 11:18:36 UTC - in response to Message 3070.  

that's odd, perhaps it was shutdown and restarted on one of those "trickle boundaries" that can occur (since a checkpoint is every 144, but for convenience I made trickles 10802 (24 per phase), so there can be some "overlap"). At any rate that is OK since I only count the maximum phase/timestep a WU has hit, as an easy rule of thumb divide credit by .007 to get timesteps, so for this computer:

3402.63 credit / .007 credits per timestep = 486089 timesteps, subtract 259248 for the phase, leaves 2nd phase, timestep 226841

you have had other runs on that computer for which you received partial credit so that explains the "higher-than-expected" credit.

ID: 3075 · Report as offensive     Reply Quote
STE\/E

Send message
Joined: 15 Aug 04
Posts: 57
Credit: 10,360,323
RAC: 1,102
Message 3077 - Posted: 5 Sep 2004, 11:33:04 UTC
Last modified: 5 Sep 2004, 12:01:19 UTC

Ok thanks Carl...But I think I have the explanation for the Close Credit increase now...

I'm running 2 WU's at once on a P4 HT CPU and for some reason 1 WU runs about 20 Minutes slower than the other WU. The only thing I can think of is any activity on the Computer is used on that side of the CPU & WU...???

Well when I seen the double entry on the 1 WU and then 2 sudden Credit increases I just assumed that the Trickle Result received Credit Twice because I didn't see another Trickle Result Entry in my Account Data...

Well now an hour later I see the Entry for the 2'nd WU and it was about 10 Minutes after the 1'st WU Reported a Result...So that probably explains the 2 Close Trickle Result Credits I would think...

Probably the WU thats running 20 minutes faster will report before the other WU the next time and slowly report earlier each time until it actually circles around and will seem to report after the slower WU...
ID: 3077 · Report as offensive     Reply Quote

Message boards : Number crunching : Another Weird Result...!!!

©2024 cpdn.org