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Credits awarded while WU running?

Credits awarded while WU running?

Questions and Answers : Windows : Credits awarded while WU running?
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Profile old_user145145

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Message 19578 - Posted: 23 Jan 2006, 19:05:41 UTC

My work unit is projected to consume some 2200 hours of computer precessing. I have received some interim crediits while it has been running. What are the criteria or benchmarks upon which this is based?
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Profile geophi
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Message 19581 - Posted: 23 Jan 2006, 19:33:00 UTC

You get 160 credits for each trickle. A trickle is every 10802 timesteps. You can see the timesteps on the built-in visualization. The credits may lag the trickle as the website credit accumulations are only updated once per day. The built-in BOINC benchmarks do not figure into the credit system in cpdn.
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Les Bayliss
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Message 19583 - Posted: 23 Jan 2006, 19:41:04 UTC
Last modified: 23 Jan 2006, 19:42:13 UTC

From the FAQ:

So how long do these trickles take and what are: a model, a phase, a trickle and a timestep?

Instead of WUs, CPDN BOINC uses \'models\', which are further subdivided into phases,
trickles, and timesteps.
A timestep represents a 1/2 hour of model time (not realtime).
Every 10,802 timesteps your model will trickle (report), and there are 24 trickles in a phase.
When you know that a model year is 12 months of 30 days (not 365 days),
you can work out that a phase is 15 years 1 day of model time (not realtime).
Each model is comprised of 3 phases.
Here\'s some rough performance numbers for a reasonably quick P4, using 1 logical cpu:


Timestep = 2.2 Seconds
Trickle = 6.6 Hours
Phase = 6.6 Days
Model = 19.8 Days


As you can see, your model will trickle (report) ~4X/day, and will complete in just
under 3 weeks (19.8 days). That is, if it were running 100% of the time.
Irrespectively, you will not see credit in your stats until your first trickle,
and your credit will increase with each respective trickle.

***************

This is for the now completed \'slab\' part of the project. Sulphur has 5 phases, and runs more slowly.
The info/help pages are currently being upgraded.

Your 2200 hours will decrease as BOINC \'learns\' how long it is taking to run the model on your computer. But it will still be months.

edit
I must type faster.
I must ....
:)

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Questions and Answers : Windows : Credits awarded while WU running?

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