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Support Cuda MIG device allocation #86

@mdmosby

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@mdmosby

Modern Nvidia GPUs support subdivision and direct allocation, however their specification via CUDA_VISIBLE_DEVICES is more complex.

  • verify that canary indeed doesn't properly support multi-device workstations with MIG enabled
  • develop scheme for identifying MIG devices
    • scope to driver version >= 570
  • properly manage allocation/return of MIG GPU resources
  • ensure full device is not allocatable resource if using MIG
  • option to only use full device, i.e., ignore MIG?

NVIDIA docs

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