Questions and Answers :
Windows :
No trickles being sent
Message board moderation
Previous · 1 · 2
Author | Message |
---|---|
Send message Joined: 29 Sep 04 Posts: 2363 Credit: 14,611,758 RAC: 0 |
Hi again Jeremy If the graphics globe looks uniformly blue for temps and other uniform colours when you press R for precipitation or P for pressure, the prognosis for this model is dire. One of the other crunchers you mentioned aborted it. Cbamber is battling on but his/her model hasn\'t trickled for two weeks. In my experience these slow-processing models can\'t be rescued and have to be aborted. One member, John Hunt, had this happen to a model near the end of a phase and he very kindly let it crunch on for ages so it would upload its end-of-phase zip file and we\'d see what sort of results it produced. From the moment of the slowdown the results suddenly became rubbish, unusable by the researchers. Look at John\'s phase 3 precipitation graph. These model worlds don\'t really turn to ice, but the graphics look as if they do. It\'s really the processing that freezes up. Just a couple of things for you to check please before you abort this model and one of us sends a private message to cbamber. * Is your computer overclocked? * What sec/timestep does your graphics window now say? (This figure won\'t have slowed to its true current snail\'s pace because it\'s a cumulative average, but if this really is an iceworld the sec/ts should already indicate this.) Cpdn news |
Send message Joined: 15 Feb 06 Posts: 18 Credit: 131,262 RAC: 0 |
Hi again Jeremy No computer is not overclocked. 2.66/tS Timestep: 164605 |
Send message Joined: 29 Sep 04 Posts: 2363 Credit: 14,611,758 RAC: 0 |
Very useful info, thanks. This means the model\'s progressed 2575 timesteps in more than 7 days which means about 360 timesteps per calendar day. You\'re going to have to put this defective model out of its misery by aborting it. Better luck with your next model and thanks for reporting the problem. I wish more members would post to report anomalies and abnormalities. Before aborting it you can if you want in the CPDN preferences section of your account select the type of model you download next. I\'ll send cbamber a private message. Reminder to everyone. In your CPDN accounts please enable email notification of private messages so if we have to contact you about this sort of problem you\'re more likely to notice the message. Cpdn news |
Send message Joined: 15 Feb 06 Posts: 18 Credit: 131,262 RAC: 0 |
Very useful info, thanks. This means the model\'s progressed 2575 timesteps in more than 7 days which means about 360 timesteps per calendar day. You\'re going to have to put this defective model out of its misery by aborting it. Better luck with your next model and thanks for reporting the problem. I wish more members would post to report anomalies and abnormalities. So the problem is in the model? There\'s no point in restarting it from the last back up? |
Send message Joined: 29 Sep 04 Posts: 2363 Credit: 14,611,758 RAC: 0 |
As your computer isn\'t overclocked and your other model\'s running fine I think we have to assume it isn\'t an instability in your machine that\'s caused a processing error. The fact that two other people\'s computers seem to have run into a problem at the same processing point indicates the same thing. In addition, this is a known problem that occurs in a small but significant proportion of HADSMs. It can happen at any time in any of the three phases. If somebody else\'s computer had completed the same model without problems we\'d be looking for the cause within your computer (eg overclocked but not properly tested for stability, flaky memory, overheating). But this isn\'t the case. Some people have restored these iceworld models from backup and tried again but I can\'t remember a single reported successful completion in these circumstances. They go wrong again in the same way at the same point. Some of these HADSMs must have initial parameter values that turn out to be unviable. The researchers are trying such a wide range of possible but plausible values that this is almost inevitable with some models. So you won\'t be depriving the researchers of a good model by aborting it. Unfortunately the model must have been doomed from the start. I know it hurts to hit the Abort button but you\'ll have to make yourself do it! You\'ll still get your credits for all the trickles you\'ve sent in of course. Cpdn news |
Send message Joined: 22 Jul 08 Posts: 3 Credit: 435,003 RAC: 0 |
I have a similar issue. One of the models I am running has not shown a trickle since July 31. In the past it have been doing about 1 per day. I noticed that my model date and time are now out of the \"your progress\" range. My range is from 1810 - 2050 and my current graphic model shows 28/02/2053 18:30 and it is increasing. Just want to check if this is normal. I am willing to let this run as long as needed in order to assist the project. |
Send message Joined: 9 Jan 07 Posts: 467 Credit: 14,549,176 RAC: 317 |
I have a similar issue. One of the models I am running has not shown a trickle since July 31. In the past it have been doing about 1 per day. I noticed that my model date and time are now out of the \"your progress\" range. My range is from 1810 - 2050 and my current graphic model shows 28/02/2053 18:30 and it is increasing. If the model is hadsm3fub_jul5_005957772_1, then it looks like you\'ve sorted it out ... Slab models (i.e. the ones that start \'hadsm3\') have three phases: 1810-1825, 1826-1840 and 2051-2065. So your model is at the start of phase 3. |
©2024 climateprediction.net