question: Select GPU from cli
context: The CLI has a flag --gpus
  In a system with more than 1 GPU, is there a way to select the GPU you want to run on from CLI?
  I tried --gpus [1] to select cuda:1 but it doesn't work.
  Also the auto gpu selection didn't work for me.  It tried to put the job on cuda:0, but cuda:0 didn't have enough memory to run it.
  in the end I resorted to CUDA_VISIBLE_DEVICES, but that seems silly.
  Thanks!
answer: I'm assuming you are referring to the LightningCLI
  In that case, just do python yourscript.py --trainer.gpus=[1]