I have a gtx970 and gtx670 installed but it appears that only the 970 is doing any work.

Do I need an SLI bridge to use more than one GPU? I know I can't SLI my two cards since they are different versions.

Please advise.

-Sam

I would like to add this from the event log.... Boinc see's the 670 but its getting ignored for some reason.

7/12/2016 8:07:21 PM | | CUDA: NVIDIA GPU 0: GeForce GTX 970 (driver version 368.69, CUDA version 8.0, compute capability 5.2, 4096MB, 3066MB available, 4381 GFLOPS peak)
7/12/2016 8:07:21 PM | | CUDA: NVIDIA GPU 1 (not used): GeForce GTX 670 (driver version 368.69, CUDA version 8.0, compute capability 3.0, 2048MB, 1959MB available, 2915 GFLOPS peak)
7/12/2016 8:07:21 PM | | OpenCL: NVIDIA GPU 0: GeForce GTX 970 (driver version 368.69, device version OpenCL 1.2 CUDA, 4096MB, 3066MB available, 4381 GFLOPS peak)
7/12/2016 8:07:21 PM | | OpenCL: NVIDIA GPU 1 (ignored by config): GeForce GTX 670 (driver version 368.69, device version OpenCL 1.2 CUDA, 2048MB, 1959MB available, 2915 GFLOPS peak)

Hi S

See client config file

You will need to set

 <use_all_gpus>1</use_all_gpus>

good luck!

Edit: you may find you get better performance not running CPU tasks while GPU tasks are running, it depends on the task mix. A very rough rule of thumb is allow one core per GPU card.

Hi S

See client config file

You will need to set

 <use_all_gpus>1</use_all_gpus>

good luck!

Edit: you may find you get better performance not running CPU tasks while GPU tasks are running, it depends on the task mix. A very rough rule of thumb is allow one core per GPU card.

Thanks for the reply. I think I have it. The event logger read this after I saved the mod to the config file:


7/14/2016 12:16:40 AM | | Config: use all coprocessors



I process a mix of LCH,Seti and milkyway.