climateprediction.net (CPDN) home page
Thread 'HadAM3 vs HadSM3'

Thread 'HadAM3 vs HadSM3'

Message boards : Number crunching : HadAM3 vs HadSM3
Message board moderation

To post messages, you must log in.

AuthorMessage
DJStarfox

Send message
Joined: 27 Jan 07
Posts: 300
Credit: 3,288,263
RAC: 26,370
Message 33651 - Posted: 2 May 2008, 0:50:17 UTC
Last modified: 2 May 2008, 0:50:51 UTC

BOINC uses the same correction factor for the entire project, no matter which model(s) you run. So...my time estimates are roughly the same for both, but neither is entirely accurate. I am running an AMD Opteron system if that makes a difference.

Question: In general, which model takes more time to run? The HadAM or the HadSM models?
ID: 33651 · Report as offensive     Reply Quote
Les Bayliss
Volunteer moderator

Send message
Joined: 5 Sep 04
Posts: 7629
Credit: 24,240,330
RAC: 0
Message 33653 - Posted: 2 May 2008, 4:24:50 UTC
Last modified: 2 May 2008, 4:28:35 UTC

hadam is a hi-res model, creating a climate at 10 minute intervals.
hadsm is a low res model, creating a climate at 30 minute intervals.

One of my current hadam models is running at 18.14 s/TS; while a hadsm on the same Q6600 is running at 1.38 s/TS.

Looking though one of the diaries, a hadsm takes about 11.5 days, and a hadam takes about 13.
This is 24/7, with no other projects.

ID: 33653 · Report as offensive     Reply Quote
ProfileMikeMarsUK
Volunteer moderator
Avatar

Send message
Joined: 13 Jan 06
Posts: 1498
Credit: 15,613,038
RAC: 0
Message 33655 - Posted: 2 May 2008, 7:05:41 UTC


It will also be affected by your CPU. I find some run quicker on one PC but others run quicker on a different PC.


I'm a volunteer and my views are my own.
News and Announcements and FAQ
ID: 33655 · Report as offensive     Reply Quote

Message boards : Number crunching : HadAM3 vs HadSM3

©2024 cpdn.org