Matthias Boehm created SYSTEMML-1861:
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Summary: Performance sparse-sparse binary ops
Key: SYSTEMML-1861
URL: https://issues.apache.org/jira/browse/SYSTEMML-1861
Project: SystemML
Issue Type: Task
Reporter: Matthias Boehm
This task aims to improve the performance of sparse-sparse binary operations
such as elementwise multiply. Currently, we use a merge join with outer join
semantics to cover the general case - for operations like multiply this is
unnecessary and could be improved by using inner join semantics and branchless
position maintenance.
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