Advanced search

Message boards : Number crunching : RAC going steady down

Post to thread Subscribe Sort
Author Message
Wdethomas
Send message
Joined: 6 Feb 10
Posts: 38
Credit: 274,204,838
RAC: 0
Level
Asn
Scientific publications
watwatwatwatwatwat
Message 36673 - Posted: 26 Apr 2014 | 15:41:22 UTC

Since the 24th of this month my RAC has gone down. I noticed that I am receiving only long runs with CUDA 42 when I was receiving before CUDA 55. I still think that the driver conflict between the Tesla K40 and the Titans is the cause because BOINC thinks I have four Titans when I actually have two Tesla and two Titans installed. The Tesla driver overrides the Titan driver.

I will separate the Tesla from the Titans and see what happens.
____________

ID: 36673 | Rating: 0 | rate: Rate + / Rate - Report as offensive    Reply Quote
Profile Retvari Zoltan
Avatar
Send message
Joined: 20 Jan 09
Posts: 2343
Credit: 16,201,255,749
RAC: 851
Level
Trp
Scientific publications
watwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwat
Message 36677 - Posted: 26 Apr 2014 | 18:43:50 UTC - in response to Message 36673.
Last modified: 26 Apr 2014 | 18:44:25 UTC

You should upgrade your drivers to at least to 334.21.

ID: 36677 | Rating: 0 | rate: Rate + / Rate - Report as offensive    Reply Quote
ExtraTerrestrial Apes
Volunteer moderator
Volunteer tester
Avatar
Send message
Joined: 17 Aug 08
Posts: 2705
Credit: 1,311,122,549
RAC: 0
Level
Met
Scientific publications
watwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwat
Message 36686 - Posted: 27 Apr 2014 | 11:47:26 UTC - in response to Message 36673.

... is the cause because BOINC thinks I have four Titans when I actually have two Tesla and two Titans installed.

This is actually just a reporting issue on the homepage, i.e. the web server code. The local BOINC should identify and handle different GPUs alright. You can see it in the message log right after startup.

MrS
____________
Scanning for our furry friends since Jan 2002

ID: 36686 | Rating: 0 | rate: Rate + / Rate - Report as offensive    Reply Quote
Wdethomas
Send message
Joined: 6 Feb 10
Posts: 38
Credit: 274,204,838
RAC: 0
Level
Asn
Scientific publications
watwatwatwatwatwat
Message 36687 - Posted: 27 Apr 2014 | 13:01:26 UTC - in response to Message 36686.

The status event log states that all cards are using the same driver, the Tesla driver. It does show two Tesla and two Titans but all using the same driver 332.50

ID: 36687 | Rating: 0 | rate: Rate + / Rate - Report as offensive    Reply Quote
Profile skgiven
Volunteer moderator
Volunteer tester
Avatar
Send message
Joined: 23 Apr 09
Posts: 3968
Credit: 1,995,359,260
RAC: 0
Level
His
Scientific publications
watwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwatwat
Message 36703 - Posted: 27 Apr 2014 | 18:56:58 UTC - in response to Message 36687.

As already suggested, a driver update is in order.
I suggest trying the latest Beta 337.12, and then moving to the next WHQL when it arrives...
____________
FAQ's

HOW TO:
- Opt out of Beta Tests
- Ask for Help

ID: 36703 | Rating: 0 | rate: Rate + / Rate - Report as offensive    Reply Quote
Post to thread

Message boards : Number crunching : RAC going steady down

//