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Credits Gained, But . . .
Posted: Sat Jun 02, 2007 5:33 pm
by smith639
Hi, I have been credited about 250 by CPDN, despite the fact that I have yet to crunc 1% of my first ever WU.
Is this normal, or have they sussed what an all round excellent guy I am, and modest to boot?
Ron
Re: Credits Gained, But . . .
Posted: Sat Jun 02, 2007 6:05 pm
by UBT - Timbo
smith639 wrote:Hi, I have been credited about 250 by CPDN, despite the fact that I have yet to crunc 1% of my first ever WU.
Is this normal, or have they sussed what an all round excellent guy I am, and modest to boot?
Ron
Hi Ron,
It's quite normal. :D
CPDN issues credits in phases, over the course of time while you are crunching. These are based on "timesteps" and if I recall, there's loads of timesteps per WU....you'll therefore receive loads of sets of credits (all of the same value as the initial amount).
see here:
http://climateapps2.oucs.ox.ac.uk/cpdnb ... smaller.3F
....does that mean I won't get credit for ages?
....you will get credit for each Trickle and there are 72 Trickles in a Slab Model, 120 in a sulphur Cycle model and around 2000 in a Transient Coupled Model. So at worst you only have to wait for about 12 hours to trickle on a fast PC running sulphur. The stats updates are currently once per day.
regards
Tim
Posted: Sat Jun 02, 2007 7:22 pm
by smith639
Thanks.
A clear cut case of RTFM. Now I have done so things are a lot clearer.
Ron
Posted: Sun Jun 03, 2007 10:22 pm
by MikeMarsUK
The M which you're RTF-ing is a bit out of date (Sylvia, who updates the website, is on maternity leave), although the conclusion is similar.
The current model (coupled) has 160 trickles (one for each model year), i.e., 0.625%. These trickles contain the climate data generated so far, so if a crash happens (say) 80% of the way through, it's not a big deal - the servers already have a lot of the information.
There is further information in the various README posts here:
http://www.climateprediction.net/board/ ... m.php?f=36