Add API to get devices of offload states #6586
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This PR adds an API
deepspeed.runtime.zero.offload_states get_state_devices, which gets devices of offload states as suggested in this comment.We could lift this up to
deepspeed.utilsbut would need to resolve a circular import: User code ->deepspeed.utils->deepspeed.utils.offload_states->deepspeed.runtime.zero->deepspeed.runtime.zero.partition_parameters->deepspeed.utilsThis will require a significant refactoring as long as we have
OffloadStateTypeEnumindeepspeed.runtime.zero.