climateprediction.net (CPDN) home page
Thread 'A question of credit.'

Thread 'A question of credit.'

Message boards : Number crunching : A question of credit.
Message board moderation

To post messages, you must log in.

AuthorMessage
Profileold_user96693

Send message
Joined: 6 Sep 05
Posts: 50
Credit: 97,106
RAC: 0
Message 21277 - Posted: 15 Mar 2006, 6:08:44 UTC

Ok, could someone tell me if this is right.

On CPDN the amount of credit granted for a given model is determined by the model type and not the amount of time taken to finish it.

i.e a slab model gets 6,805.26 cobblestones while a sulpher gets 19,281.57.

My results show different cpu times for slab models but the same granted credit.

ID: 21277 · Report as offensive     Reply Quote
Les Bayliss
Volunteer moderator

Send message
Joined: 5 Sep 04
Posts: 7629
Credit: 24,240,330
RAC: 0
Message 21279 - Posted: 15 Mar 2006, 7:25:47 UTC

Slab had 94.52 credits/trickle, and 72 trickles
Sulphur had 160.68 credits/trickle and 120 trickles

I not sure what the new TCM model gets per trickle, but no doubt this will come out soon enough.

Having said that, only Total Credits is accumulative. Rac is a sort of average over a few days, and decays with time. A bit like putting water into a leaky bucket.

ID: 21279 · Report as offensive     Reply Quote
ProfileMikeMarsUK
Volunteer moderator
Avatar

Send message
Joined: 13 Jan 06
Posts: 1498
Credit: 15,613,038
RAC: 0
Message 21281 - Posted: 15 Mar 2006, 7:33:56 UTC

TCM is 226/trickle if I recall correctly, and the seasonal attribution project is 0.1 per timestep (so 72 per trickle)
I'm a volunteer and my views are my own.
News and Announcements and FAQ
ID: 21281 · Report as offensive     Reply Quote
Profileold_user96693

Send message
Joined: 6 Sep 05
Posts: 50
Credit: 97,106
RAC: 0
Message 21285 - Posted: 15 Mar 2006, 9:16:49 UTC

Thanks for the information Les and Mike.
Another question though, How may trickles in the new TCM and seasonal attribution models?
ID: 21285 · Report as offensive     Reply Quote
ProfileMikeMarsUK
Volunteer moderator
Avatar

Send message
Joined: 13 Jan 06
Posts: 1498
Credit: 15,613,038
RAC: 0
Message 21302 - Posted: 15 Mar 2006, 15:46:01 UTC - in response to Message 21285.  

TCM has 160 trickles (one per year), not sure about the seasonal model but it might be around 72. The trickles on the seasonal model are much quicker than the coupled model trickles, I get 6 per day on seasonal versus 2 per day on coupled.
I'm a volunteer and my views are my own.
News and Announcements and FAQ
ID: 21302 · Report as offensive     Reply Quote
Nuadormrac
Avatar

Send message
Joined: 14 Oct 05
Posts: 44
Credit: 4,011,789
RAC: 8,782
Message 21436 - Posted: 20 Mar 2006, 4:15:21 UTC

By TCM, do you mean the new 5.06 coupled unit? I got one of these units and had a few questions... Perhaps a mod wouldn\'t mind putting a sticky on a thread containing this info, so it\'s out there for people who look. Up to them though...

My questions about the new 5.06 coupled units is this:

- How often do these units have save points?
- What is the credit per trickle (is this the 266/trickle mentioned)?
- Hitting 8 on my keyboard doesn\'t show the countdown to save point, nor are the stats in coupled (though in seasonal they do display) shown for s/TS or TS completed. Huh?
- If one disables networking while away, will it handle attempts to trickle in with networking disabled very well?

The first one I ask, because it\'s always good to know when it\'s had a savepoint, so one knows the best time to shutdown/backup while losing the minimum amount of crunch time...

The last I ask, because last night I came home from dinner to an unpleasent surprise. Kaspersky 6.0 beta (release candidate actually) totally locked up Windows due to a beta bug, and my entire BOINC cache got waisted. Seasonal already reported in while I was away, so nothing I could do; it automatically reported a failure. If one disabled networking while away for a length of time, to give one\'s self a chance to shut down/restart from the last save point or backup (if possible), will the model have problems with no networking when it attempts to get out?

thx in advance...
ID: 21436 · Report as offensive     Reply Quote
Les Bayliss
Volunteer moderator

Send message
Joined: 5 Sep 04
Posts: 7629
Credit: 24,240,330
RAC: 0
Message 21437 - Posted: 20 Mar 2006, 4:42:02 UTC

Hullo again.

TCM = Transient Coupled model (Coupled Ocean)

Checkpoints are done every 432 Time steps (six Model days).
0030 on the 1st, 7th, 13th, etc, of the Model month.

Credits = 226.8

Use Z to remove the overlay on the left, then 8 to show the countdown.

Setting \'Network activity suspended\' should be fine.

ID: 21437 · Report as offensive     Reply Quote
Nuadormrac
Avatar

Send message
Joined: 14 Oct 05
Posts: 44
Credit: 4,011,789
RAC: 8,782
Message 21439 - Posted: 20 Mar 2006, 5:07:24 UTC
Last modified: 20 Mar 2006, 5:09:40 UTC

Thanks a bunch... That was it, the overlay... Anyhow I\'m getting 1.92 s/TS so I guess that\'s good...

I\'m guessing doing the math that tricles are now 25k a part?, or every January per model year? I guess I\'ll find out...
ID: 21439 · Report as offensive     Reply Quote
ProfileAndrew Hingston
Volunteer moderator

Send message
Joined: 17 Aug 04
Posts: 753
Credit: 9,804,700
RAC: 0
Message 21447 - Posted: 20 Mar 2006, 13:18:57 UTC - in response to Message 21439.  

I\'m guessing doing the math that tricles are now 25k a part?, or every January per model year?.

Actually at the beginning of December, but yes.

ID: 21447 · Report as offensive     Reply Quote

Message boards : Number crunching : A question of credit.

©2024 cpdn.org