DeepSpeed

ec029e76 - Fix the sequence-parallelism for the dense model architecture (#4530)

Fix the sequence-parallelism for the dense model architecture (#4530) Co-authored-by: Masahiro Tanaka <mtanaka@microsoft.com> Co-authored-by: Olatunji Ruwase <olruwase@microsoft.com> Co-authored-by: Sam Ade Jacobs <samjacobs@microsoft.com> Co-authored-by: Michael Wyatt <michaelwyatt@microsoft.com>