climateprediction.net home page
RAC Drops Dramatically

RAC Drops Dramatically

Message boards : Number crunching : RAC Drops Dramatically
Message board moderation

To post messages, you must log in.

AuthorMessage
Profile old_user87778

Send message
Joined: 14 Jul 05
Posts: 8
Credit: 27,173
RAC: 0
Message 15927 - Posted: 12 Sep 2005, 3:26:36 UTC

Between Saturday (9/10) and Sunday (9/11) 05: My RAC ropped from over 800 to 132.66. Is this due to the recent RAC code change? I guess I need to check my bank account in case of some curse.

ID: 15927 · Report as offensive     Reply Quote
Profile Honza
Volunteer moderator

Send message
Joined: 5 Aug 04
Posts: 390
Credit: 2,475,242
RAC: 0
Message 15929 - Posted: 12 Sep 2005, 6:21:30 UTC

BOINC Server Upgrade Done -- RAC Calc Changed,
originial message at phpBB forum - http://www.climateprediction.net/board/viewtopic.php?t=3197

quiting Carl

OK, the BOINC server upgrade (software, not hardware!) seems to be done, the web pages are updated as well as the underlying BOINC software. The BOINC forums have improved quite a bit I think (although I\'m sure the phpboard fans will still stay here! Smile

I think I have the final RAC credit algorithm for CPDN -- let me know what you think. Basically it\'s like the regular BOINC RAC -- I sort of weight a vector of trickles with the \"exponential decay\" calc (so a week old trickle is half-full-credit for expavg_credit) etc. It seems to get numbers more in line with other projects, and weights recent trickles higher so it\'s more sensible for CPDN. and you\'re not as penalized if you have a slower machine (since before I was taking \"average trickle date\" which is not so great).
<i>phpBB forum for CPDN, all are </i><a href="http://www.climateprediction.net/board">invited</a>
ID: 15929 · Report as offensive     Reply Quote
Profile old_user87778

Send message
Joined: 14 Jul 05
Posts: 8
Credit: 27,173
RAC: 0
Message 15934 - Posted: 12 Sep 2005, 15:37:37 UTC

I\'ve been running for 15 hours on a 2.8G P4 since my last post about RAC. I\'m not showing any new tricks. No change in RAC nor TC either. Has any one increased the number of timesteps per tricle for faster machines?
ID: 15934 · Report as offensive     Reply Quote
Profile geophi
Volunteer moderator

Send message
Joined: 7 Aug 04
Posts: 2170
Credit: 64,555,907
RAC: 5,858
Message 15935 - Posted: 12 Sep 2005, 16:32:00 UTC - in response to Message 15934.  

I\'ve been running for 15 hours on a 2.8G P4 since my last post about RAC. I\'m not showing any new tricks. No change in RAC nor TC either. Has any one increased the number of timesteps per tricle for faster machines?

No, I don\'t think so. This trickle listing stuff has been broken since about 20 UTC on the 11th.
ID: 15935 · Report as offensive     Reply Quote

Message boards : Number crunching : RAC Drops Dramatically

©2024 climateprediction.net