Message boards : Number crunching : A question of credit.
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Send message Joined: 6 Sep 05 Posts: 50 Credit: 97,106 RAC: 0 |
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. |
Send message Joined: 5 Sep 04 Posts: 7629 Credit: 24,240,330 RAC: 0 |
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. |
Send message Joined: 13 Jan 06 Posts: 1498 Credit: 15,613,038 RAC: 0 |
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 |
Send message Joined: 6 Sep 05 Posts: 50 Credit: 97,106 RAC: 0 |
Thanks for the information Les and Mike. Another question though, How may trickles in the new TCM and seasonal attribution models? |
Send message Joined: 13 Jan 06 Posts: 1498 Credit: 15,613,038 RAC: 0 |
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 |
Send message Joined: 14 Oct 05 Posts: 44 Credit: 4,011,789 RAC: 8,782 |
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... |
Send message Joined: 5 Sep 04 Posts: 7629 Credit: 24,240,330 RAC: 0 |
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. |
Send message Joined: 14 Oct 05 Posts: 44 Credit: 4,011,789 RAC: 8,782 |
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... |
Send message Joined: 17 Aug 04 Posts: 753 Credit: 9,804,700 RAC: 0 |
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. |
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