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Message boards : Graphics cards (GPUs) : How do you make 2 GPU tasks run on 1 GPU?

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Alex
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Message 45411 - Posted: 27 Nov 2016 | 22:18:39 UTC

Hi, I wanted to know how to run 2 GPUGRID tasks on 1 GPU. I have a gtx 970m, i7-5700hq, and 16GB RAM. I have the latest version of BOINC 7.6.22.
Thanks.

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Message 45412 - Posted: 27 Nov 2016 | 23:14:23 UTC
Last modified: 27 Nov 2016 | 23:24:40 UTC

Create a new "app_config.xml" file in the "c:\Programdata\Boinc\Projects\www.gpugrid.net" directory which should contain

<app_config>
<app>
<name>acemdshort</name>
<max_concurrent>2</max_concurrent>
<gpu_versions>
<gpu_usage>0.5</gpu_usage>
<cpu_usage>1.0</cpu_usage>
</gpu_versions>
</app>

<app>
<name>acemdlong</name>
<max_concurrent>2</max_concurrent>
<gpu_versions>
<gpu_usage>0.5</gpu_usage>
<cpu_usage>1.0</cpu_usage>
</gpu_versions>
</app>
</app_config>


if you want to run both short and long runs x2. Having said this, the GTX970M seems to have similar performance as the desktop GTX960, so I would rather aim at the short runs. Dont forget to check/uncheck the short/long runs in your GPUGRID setting accordingly.

Besides, crunching with a Notebook is not straightforward because of the heat generation, the internal fan will wind up quickly. I recommend using TThrottle (Freeware) in order to avoid overheating and slow down the tasks where needed.
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Message 45413 - Posted: 28 Nov 2016 | 0:20:18 UTC - in response to Message 45412.

Thanks, this laptop doesn't have any overheating problems with the GPU, it's the CPU that gets too hot, i'm thinking of a cooling mod to help with that.
It is working after i updated gpugrid and restarted boinc. To split it between 3 tasks i would change .5 to .33 right? Thanks.

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Message 45414 - Posted: 28 Nov 2016 | 0:32:09 UTC - in response to Message 45412.

Also if I had a system with 2 gtx 750 ti's would i need to make a app_config.xml or would it automatically run 1 task each?

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Message 45416 - Posted: 28 Nov 2016 | 7:50:55 UTC - in response to Message 45413.

To split it between 3 tasks i would change .5 to .33 right? Thanks.
Theoretically it's right, but there's a limit of 2 workunits per GPU here at GPUGrid, so your host won't receive the 3rd one.

Also if I had a system with 2 gtx 750 ti's would i need to make a app_config.xml or would it automatically run 1 task each?
This is off topic, but it would work as you expect it to work.

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Message boards : Graphics cards (GPUs) : How do you make 2 GPU tasks run on 1 GPU?

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