climateprediction.net (CPDN) home page
Thread 'question about workunit'

Thread 'question about workunit'

Message boards : Number crunching : question about workunit
Message board moderation

To post messages, you must log in.

AuthorMessage
NewtonianRefractor

Send message
Joined: 22 May 08
Posts: 49
Credit: 2,335,997
RAC: 0
Message 34007 - Posted: 5 Jun 2008, 8:47:17 UTC

is this normal for a workunit?
http://climateapps2.oucs.ox.ac.uk/cpdnboinc/result.php?resultid=7886508&field=p_2

This is what it looks like on the PC


I am sorry if this is a retarded question, but I am new here from Seti@Home, so this boinc project here is sufficiently different that I am a bit confused...
ID: 34007 · Report as offensive     Reply Quote
Les Bayliss
Volunteer moderator

Send message
Joined: 5 Sep 04
Posts: 7629
Credit: 24,240,330
RAC: 0
Message 34008 - Posted: 5 Jun 2008, 9:20:27 UTC

Yes, that looks about right for a temperature chart in \'wall chart\' perspective.
Do you get the other charts OK? (precitation, clouds, etc.)

Two points to note if you haven\'t come across them yet:
1) There\'s a display bug which makes the text show as chunky white blobs when the model has gone from one phase to the next. The cure is to exit from BOINC and then restart it.
Which brings us to the 2nd bug:
2) NEVER stop the model after a change from phase 1 to 2, or from 2 to 3, until at least one save point after the phase change. Otherwise the model will rewind to the beginning again.


Backups: Here
ID: 34008 · Report as offensive     Reply Quote
NewtonianRefractor

Send message
Joined: 22 May 08
Posts: 49
Credit: 2,335,997
RAC: 0
Message 34014 - Posted: 5 Jun 2008, 18:45:27 UTC

The question is that it is sending the trickle up messages, and on the website I can look at the \'time series\' for the model. The time series on the website are flat: the temperature is at 0, pressure is flat too...

On the computer the model seems to be displaying the data properly, but on the website it is kind of strange.

You can take a look at the time series here: http://climateapps2.oucs.ox.ac.uk/cpdnboinc/result.php?resultid=7886508&field=temp.

I hope I made my question a bit clearer.

Plus if you look at the \'snapshot\' on the website you get this:
http://climateapps2.oucs.ox.ac.uk/cpdnboinc/runimage/7886508_tsnap.png

Is there something wrong?
ID: 34014 · Report as offensive     Reply Quote
Profilemo.v
Volunteer moderator
Avatar

Send message
Joined: 29 Sep 04
Posts: 2363
Credit: 14,611,758
RAC: 0
Message 34015 - Posted: 5 Jun 2008, 19:14:24 UTC
Last modified: 5 Jun 2008, 19:16:40 UTC

I think the graphs and snapshots for the HADAM models are only generated after the model has completed, so there\'s nothing to worry about. For example, this model that Les is still processing doesn\'t show the graph or snapshot either:

http://climateapps2.oucs.ox.ac.uk/cpdnboinc/result.php?resultid=7885683&field=temp

Blue seems to be a default CPDN colour meaning no data or no data yet. I don\'t think I\'ve ever seen a HADAM graph part-completed.

As long as your model continues crunching and your model graphics display using the button in BOINC manager and show the climate changes as they are generated, it\'s doing fine.

As you\'re newish to CPDN and climate models are trickier to complete than SETI tasks, if only because of their length, I\'d recommend you look at the following project READMEs, linked in my signature or Les\'s:

* in the README about crashes and problems, item #6 by Mike Mars who outlines what to do and what not to do

* in the README about backups, choose a method and start backing up the contents of the BOINC folder regularly. By doing this, if your model does crash you can restore the most recent backup and continue crunching the same model. I use Les\'s super-simple manual method which is quick and in my experience fail-safe.
Cpdn news
ID: 34015 · Report as offensive     Reply Quote
Les Bayliss
Volunteer moderator

Send message
Joined: 5 Sep 04
Posts: 7629
Credit: 24,240,330
RAC: 0
Message 34016 - Posted: 5 Jun 2008, 19:48:37 UTC

Sorry, yes, Mo is correct.
For some reason I thought that you had a \'slab\' model. It\'s these that have the 3 phases.

The high resolution models don\'t produce graphs ON THE SERVER until they\'re completed.
And even then you may have to wait a short while if the server is overloaded at the time.
What you see before then, is a sort of \'blank graph paper\', ready for the data.

Slab models produce a graph soon after the end-of-phase data is uploaded, and nothing at all on the server before then.

TCM\'s, (Coupled Ocean models), produce a graph right from the start, with a bit more added each time a trickle is received.


Backups: Here
ID: 34016 · Report as offensive     Reply Quote
Profilemo.v
Volunteer moderator
Avatar

Send message
Joined: 29 Sep 04
Posts: 2363
Credit: 14,611,758
RAC: 0
Message 34017 - Posted: 5 Jun 2008, 20:50:59 UTC

With all three model types generating the graphs of their results in different ways and at different stages, it\'s not surprising that members sometimes don\'t know what to expect. One could be forgiven for thinking that this is done to deliberately confuse people, but it\'s because the three model types build up the data in different ways.
Cpdn news
ID: 34017 · Report as offensive     Reply Quote
NewtonianRefractor

Send message
Joined: 22 May 08
Posts: 49
Credit: 2,335,997
RAC: 0
Message 34018 - Posted: 5 Jun 2008, 22:00:37 UTC

Thanks for the explanation. I got it now. This clarifies things quite a bit...
ID: 34018 · Report as offensive     Reply Quote

Message boards : Number crunching : question about workunit

©2024 cpdn.org