fix serialization of RunningMoments on multiple GPUs #1892
Merged
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This issue is related to PR #1869
When training in a distributed setup, the collected count of the RunningMoments class ended up being a tensor, not an integer. This led to errors in json serializtion.
This fixes the type of xs_count in distributed trainings.
Previous fix (see c220350) caused tests to fail and was therefore reverted by @kashif. Also @seanexp