DeepSpeed

12aedac6 - add available memory check to accelerators (#4508)

add available memory check to accelerators (#4508) * add available memory check to accelerator * catch case where nvmlInit fails * add pynvml to reqs * fix for cpu systems * Update accelerator/cuda_accelerator.py Co-authored-by: Michael Wyatt <michaelwyatt@microsoft.com> * simplify --------- Co-authored-by: Michael Wyatt <michaelwyatt@microsoft.com>