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Two GPU's not working

Posted: Wed Mar 25, 2020 12:10 pm
by EZ8000
Hello, so ive been trying to get two gpu's in my system so that i can fold with them both. These cards being a RTX 2060 and a GTX550ti. Obviously i want the 2060 as my main card but whenever i install drivers for one card the other doesn't work and spits out loads of errors both in windows and in f@H. After trying lots of different things im starting to assume that this isnt going to work anymore presumably as there is no driver that supports them both that i can find.

Currently the two errors that i have are error 43 in windows device manager (assuming because of a driver issue) and these errors in F@H:

OpenCL GPU not found for 'opencl-index' = 1 with vendor ID = 0x10de, please correct this by removing the manually configured 'opencl-index' option.
CUDA device not found for 'cuda-index' = 1, please correct this by removing the manually configured 'cuda-index' option.

If anyone can help me get this to work that would be great,
Thanks

Re: Two GPU's not working

Posted: Wed Mar 25, 2020 12:52 pm
by JimboPalmer
The GTX 550 ti is too old to fold.
When I look to see if a card can fold I look for OpenCL 1.2 and Double Precision floating point math.
https://www.techpowerup.com/gpu-specs/g ... 50-ti.c274

The GTX 550 ti does not support OpenCL 1.2

If it simplifys your rig to just remove the card, great.

Re: Two GPU's not working

Posted: Wed Mar 25, 2020 1:08 pm
by EZ8000
JimboPalmer wrote:The GTX 550 ti is too old to fold.
When I look to see if a card can fold I look for OpenCL 1.2 and Double Precision floating point math.
https://www.techpowerup.com/gpu-specs/g ... 50-ti.c274

The GTX 550 ti does not support OpenCL 1.2

If it simplifys your rig to just remove the card, great.

Oh right, probably should have checked that before spending ages trying it... :(

Sorry for the stupid question, thanks for the help :D

Re: Two GPU's not working

Posted: Wed Mar 25, 2020 1:12 pm
by JimboPalmer
Look at it this way, if you had a hard question, I would be inadequate to help. So I get to help by cherry picking easy questions.

Re: Two GPU's not working

Posted: Wed Mar 25, 2020 7:15 pm
by toTOW
The GTX 550 Ti is in the list of supported GPUs since is does support double precision computation.

I think the problem here is that this old GPU requires legacy drivers, which are a different package than the one used for 2060. I'm not sure it's worth the hassle of trying to run this ancient and rather low end GPU ...

Re: Two GPU's not working

Posted: Wed Mar 25, 2020 7:29 pm
by bruce
Ive had similar issues when I put two GPUs in the same system and nV supports them in different driver packages.