--devices
[Miner parameter]
Specify which GPUs you want to use.
If you have a 6 GPU rig, and want to disable GPU2 (the third gpu):
--devices 0,1,3,4,5
This will make GPU0, GPU1, GPU3, GPU4 and GPU5 be active/mining.
If you have a 6 GPU rig, and want to disable GPU2 (the third gpu):
--devices 0,1,3,4,5
This will make GPU0, GPU1, GPU3, GPU4 and GPU5 be active/mining.