climateprediction.net (CPDN) home page
Thread '1560 hours to a project?'

Thread '1560 hours to a project?'

Message boards : climateprediction.net Science : 1560 hours to a project?
Message board moderation

To post messages, you must log in.

AuthorMessage
old_user456200

Send message
Joined: 9 Jun 07
Posts: 2
Credit: 1,960
RAC: 0
Message 29201 - Posted: 9 Jun 2007, 11:44:03 UTC

Hello,
I have just installed BOINC and running two climate prediction projects and BOINC tells me it got 1560 more hours to complete these projects. is this a reasonable time? my pc has intel core2duo 2.66 processor with 1gb of memory on an asus motherboard. And if I may also ask - How many project can my pc handle? should I cancel one or put some more in? Thanks.
ID: 29201 · Report as offensive     Reply Quote
ProfilePooh Bear 27
Avatar

Send message
Joined: 5 Feb 05
Posts: 465
Credit: 1,914,189
RAC: 0
Message 29202 - Posted: 9 Jun 2007, 12:14:55 UTC

If you run 24/7 and only do Climate, the time is reasonable (about 66 days). I run with other projects, and they run about 75-80 days on Core 2 Duo.

One project per core, so 2 is the max you will do at a single time. The amount of memory you have is fine for 2, but if you start doing some other memory intensive programs, the projects will swap out and slow down.

Just a note on crediting, the models trickle once a year (~.66% after the 4th or 5th of Dec). Credit on Climate is run approximately once a day (some outages occur and has taken a week or more to get credit). So if you see your model past these and you do not have the credit for it, do not panic.

ID: 29202 · 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 29203 - Posted: 9 Jun 2007, 13:07:57 UTC

Hi Izakis

As you are a new cpdn cruncher, I\'d recommend a look at the project READMEs linked through my signature. They\'re on an independent cpdn forum where separate registration is required, but everybody can read them. Don\'t try to read everything! I suggest a look at the top tips in the README about running the model.

In the README about avoiding model crashes, have a look at item #5 by Mike and item #1 by Les.
Cpdn news
ID: 29203 · Report as offensive     Reply Quote
old_user456200

Send message
Joined: 9 Jun 07
Posts: 2
Credit: 1,960
RAC: 0
Message 29205 - Posted: 9 Jun 2007, 17:18:00 UTC

Hi again,
Thank you guy\'s very much you have been very helpful,
I looked into those READMEs too - Excellent :)
Thanks.
ID: 29205 · Report as offensive     Reply Quote
old_user176417

Send message
Joined: 17 Mar 06
Posts: 14
Credit: 81,978
RAC: 0
Message 31974 - Posted: 3 Jan 2008, 6:23:26 UTC

I always wondered how BOINC would deal with a dual core. Must just download to models, one for each core. I want to build a new dual core AMD soon, and keep this current PC as a pure BOINC 24/7 and also do some on the new one (power company is gonna love me)

That brings me to a paradox: If we are spending all this electricity trying to figure out how to avoid global warming, are we not just gonna CAUSE global warming??
ID: 31974 · Report as offensive     Reply Quote
ProfileastroWX
Volunteer moderator

Send message
Joined: 5 Aug 04
Posts: 1496
Credit: 95,522,203
RAC: 0
Message 31975 - Posted: 3 Jan 2008, 6:44:57 UTC

As compared to what? Driving an Urban Assault Vehicle (a.k.a. SUV)? Flying off to Shangrila with the family on vacation/holiday? Eating meat?

Use the search engine, here and on the main BB; the topic has been done to death over the years of this project.

We all do what we will -- and most of us, I suspect, are very good at rationalization. At the moment, I run 14 cores in six machines; after tomorrow, that should be 16 cores in six machines. Why? We are, after all, doing nothing less than trying to further understanding of what might be catastrophic to life as we know it within a century, eh? (And this is the fourth straight \'Winter\' that all my house heat comes from the intelligent space heaters.)

The science team addressed the issue early on. It\'s somewhere on the main BB.
"We have met the enemy and he is us." -- Pogo
Greetings from coastal Washington state, the scenic US Pacific Northwest.
ID: 31975 · Report as offensive     Reply Quote
Les Bayliss
Volunteer moderator

Send message
Joined: 5 Sep 04
Posts: 7629
Credit: 24,240,330
RAC: 0
Message 31977 - Posted: 3 Jan 2008, 7:07:36 UTC


And you might like to have a look at the \'front\' of the project, in particular the science pages, and this page, where it says near the top that the aim of the project is to improve the understanding of climate models, NOT to prove that global warming is happening, or to reduce it.
The science would be just as valid if the climate was cooling down.

The big step, when LOTS more is known, will be to start modeling the polar regions, especially the Antarctic, where climate models are not very good at all.

ID: 31977 · 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 31987 - Posted: 4 Jan 2008, 0:27:29 UTC

I only consider that my computer uses extra electricity in summer even though it crunches 24/7 all year. The room heating is turned off in the room where the computer is. If I didn\'t crunch I\'d need the radiator on in the winter.
Cpdn news
ID: 31987 · Report as offensive     Reply Quote

Message boards : climateprediction.net Science : 1560 hours to a project?

©2024 cpdn.org