How To Enable Choice of Which of 2 GPU's To Use

rbpeake
rbpeake
Joined: 18 Jan 05
Posts: 266
Credit: 1168372797
RAC: 639672
Topic 197146

I have a computer containing 2 different Nvidia GPU's. How do I force a choice in BOINC of which GPU to use? Or to use both, if that is even possible?

Thanks!

Jord
Joined: 26 Jan 05
Posts: 2952
Credit: 5893653
RAC: 0

How To Enable Choice of Which of 2 GPU's To Use

To use both, make a cc_config.xml file in your data directory and add into it:


1


See Client Configuration in the BOINC User Wiki for more information.

To use only one GPU and not the other, you can use several options:

1. BOINC uses only the best GPU by default, so if you have two different GPUs, and you do not force the , only the best GPU will be used. BOINC decides what's the better GPU based on a) compute capability; b) software version; c) available memory; d) speed.

You see those when BOINC does the detecting of the GPUs.
If both GPUs are the same brand and model and have the same detection arguments, they'll be used both automatically.

2. You can force BOINC to ignore one or both GPUs, using the client configuration option of , or , depending on what brand GPUs you have.

An example of such a cc_config.xml file:


0
3


The above ignores ATI GPU0 and Nvidia GPU3.

3. You can exclude certain GPUs from being used on this project. To do so, use the client configuration option of

An example of such a cc_config.xml file:


http://einstein.phys.uwm.edu
3
NVIDIA
einsteinbinary_BRP5


The above will exclude the use of Nvidia GPU3 from being used on the Einstein project in combination with the BRP5 GPU application. You can do this for multiple applications.

4. To use no GPU at all, make a client configuration file and add into it:


1


The above will stop BOINC from trying to detect a GPU when it starts up.

To activate any of the options above, does require a full exit & restart of the client.

rbpeake
rbpeake
Joined: 18 Jan 05
Posts: 266
Credit: 1168372797
RAC: 639672

Thank you! :)

Thank you! :)

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.