2 gpu's


log in

Advanced search

Questions and Answers : GPU applications : 2 gpu's

Author Message
BlackDeath
Send message
Joined: 31 May 03
Posts: 22
Credit: 1,909,684
RAC: 0
Australia
Message 1395656 - Posted: 27 Jul 2013, 18:39:17 UTC

it there a way to run an instance for each gpu.. or does bionc use all of them at once??

Ulrich Metzner
Volunteer tester
Avatar
Send message
Joined: 3 Jul 02
Posts: 969
Credit: 8,144,771
RAC: 10,231
Germany
Message 1395732 - Posted: 27 Jul 2013, 22:58:36 UTC
Last modified: 27 Jul 2013, 23:04:10 UTC

BOINC only uses the one and only GPU, it considers the best. If you want to use more GPUs, you'll have to to tell it the client! You have to create a file named "cc_config.xml" in the BOINCDATA-folder and inside you have to put the following code:

<cc_config>
<options>
<use_all_gpus>1</use_all_gpus>
</options>
</cc_config>

This way BOINC uses all GPUs and runs one instance of GPU-app per GPU.
Look here:
http://boinc.berkeley.edu/wiki/Client_configuration

[edit]
This is the way i do it. I run on GT 640 (primary with monitor) and GT 430 (secondary without any monitor).
____________
Aloha, Uli

BlackDeath
Send message
Joined: 31 May 03
Posts: 22
Credit: 1,909,684
RAC: 0
Australia
Message 1395768 - Posted: 28 Jul 2013, 3:44:10 UTC - in response to Message 1395732.

I'm not 100% sure its working..

i have a 680gtx and a 550ti...

i can still only see 1 instance of the gpu client running.. but i think its gotten faster.

is there a way i can find out if it actually is using both gpus?

thanks

Profile Gatekeeper
Avatar
Send message
Joined: 14 Jul 04
Posts: 887
Credit: 176,479,616
RAC: 30
United States
Message 1395769 - Posted: 28 Jul 2013, 3:47:37 UTC - in response to Message 1395768.
Last modified: 28 Jul 2013, 3:48:49 UTC

I'm not 100% sure its working..

i have a 680gtx and a 550ti...

i can still only see 1 instance of the gpu client running.. but i think its gotten faster.

is there a way i can find out if it actually is using both gpus?

thanks


Your rig is still showing the 680 as your only GPU. Did you follow the instructions Ulrich gave you? If so, did you stop, close, and then re-start BOINC after you created the file as mentioned? When working correctly, you'll see two GPU WU's running simultaneously.
____________

BlackDeath
Send message
Joined: 31 May 03
Posts: 22
Credit: 1,909,684
RAC: 0
Australia
Message 1395820 - Posted: 28 Jul 2013, 11:08:02 UTC - in response to Message 1395769.

OK i just tried importing the config file under the advanced menu options.. i restarted the software and it works now.. than you very much guys

BlackDeath
Send message
Joined: 31 May 03
Posts: 22
Credit: 1,909,684
RAC: 0
Australia
Message 1395858 - Posted: 28 Jul 2013, 14:26:22 UTC - in response to Message 1395820.

lovely... 550ti crunches on average 20 minutes..... 680gtx manages 10 minutes.. they both occasionally manage up to half that time

Questions and Answers : GPU applications : 2 gpu's

Copyright © 2014 University of California