DeepSpeed

4716b0f7 - share inflight registry between PartitionedParameterCoordinators (#3462)

share inflight registry between PartitionedParameterCoordinators (#3462) * share inflight registry between PartitionedParameterCoordinator * bound registry to model * make InflightParamRegistry standalone * fix format --------- Co-authored-by: Olatunji Ruwase <olruwase@microsoft.com>