Optional engine-specific all reduce tensor operation.
Column Means
Column sums.
Column sums. At this point this runs on checkpoint and collects in-core vector.
Second norm
Column clounts.
Column clounts. Counts the non-zero values. At this point this runs on checkpoint and collects in-core vector.
Additional experimental operations over CheckpointedDRM implementation. I will possibly move them up to the DRMBase once they stabilize.