Matthias Boehm created SYSTEMML-1723:
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Summary: Parallel nnz recompute for all multi-threade convolution
ops
Key: SYSTEMML-1723
URL: https://issues.apache.org/jira/browse/SYSTEMML-1723
Project: SystemML
Issue Type: Task
Reporter: Matthias Boehm
All multi-threaded convolution operations currently make an additional pass
over the output in order to {{recomputeNonZeros}}, which is a sequential
operation. Since all convolution operations parallelize over rows (with
guaranteed disjoint results), we should recompute the non zeros locally for
each row partition and simply aggregate the final meta data.
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