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Message boards : Graphics cards (GPUs) : Two GPU's and the project is only using one

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Greg _BE
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Message 52697 - Posted: 22 Sep 2019 | 21:00:08 UTC

How do you get the project to acknowledge the 2nd GPU?
I have GTX 1050 TI and a GTX 650
The 1050 is picked up and put to use, but no 2nd task is running on the 650.
How do I get that to happen?

Already have cc_config set up to use all gpu's, but this project seems to ignore that command.

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Profile JStateson
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Message 52698 - Posted: 22 Sep 2019 | 21:10:53 UTC - in response to Message 52697.

What does the boinc manager event log show. The top 10 or so lines should show the CPU and the number of GPUs and associated libraries. Maybe boinc did not see the 650. Project just uses what it is told to us.

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Message 53685 - Posted: 19 Feb 2020 | 5:10:13 UTC

I also have this issue, and when I check the event log, it shows my second GPU (a GTX 750Ti) as detected but "not used". How can i fix this?

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Keith Myers
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Message 53694 - Posted: 19 Feb 2020 | 18:27:17 UTC - in response to Message 53685.

Put <use_all_gpus>1</use_all_gpus> into your cc_config.xml file and restart BOINC.

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Ian&Steve C.
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Message 53802 - Posted: 29 Feb 2020 | 20:33:13 UTC - in response to Message 53694.

Put <use_all_gpus>1</use_all_gpus> into your cc_config.xml file and restart BOINC.


can almost guarantee that this is the issue.

by default BOINC will only use the GPU(s) that it deems are "most capable". you have to tell it to use all of them in a mixed card system.

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Message boards : Graphics cards (GPUs) : Two GPU's and the project is only using one

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