Matthias Boehm created SYSTEMML-1507:
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Summary: Additional meta operator template: SpoofRowwise
Key: SYSTEMML-1507
URL: https://issues.apache.org/jira/browse/SYSTEMML-1507
Project: SystemML
Issue Type: Sub-task
Reporter: Matthias Boehm
This task aims to add further codegen templates besides the existing
SpoofCellwise, SpoofRowAggregate, SpoofOuterProduct, SpoofMultiAggregate.
Rowwise Templates: In addition to our row aggregate template (which supports
rowwise column aggregations) we want to be able to fuse arbitrary rowwise
operations with and without aggregate in order to avoid unnecessary
intermediates for expressions like B = (A <= rowMins(A)); C = B / rowSums (B),
which should become a single operator instead of 4 scans and two matrix and two
vector intermediates. Similar to our existing SpoofCellwise template (which
supports no aggregation, row aggregation, and full aggregation), this
SpoofRowwise template should support no aggregation, row aggregation, and
column aggregation.
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