Move batched_complete_cumsum op to FBGEMM #4036
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Summary:
X-link: https://github.com/facebookresearch/FBGEMM/pull/1121
X-link: facebookresearch/generative-recommenders#271
asynchronous_batched_complete_cumsum
implements batched complete_cumsum in a single kernel to avoid writing for loop in python.Move the kernel from
generative_recommenders
folder to FBGEMM so that it can be used in different models. The kernel has not been used in production yet so the change is safe.Reviewed By: sryap, zhaozhul, q10
Differential Revision: D72906062