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Posted to issues@systemml.apache.org by "Matthias Boehm (JIRA)" <ji...@apache.org> on 2018/02/23 00:27:13 UTC

[jira] [Created] (SYSTEMML-2160) Incorporate sparsity in lower bound costs

Matthias Boehm created SYSTEMML-2160:
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             Summary: Incorporate sparsity in lower bound costs
                 Key: SYSTEMML-2160
                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2160
             Project: SystemML
          Issue Type: Sub-task
            Reporter: Matthias Boehm


So far, the codegen optimizer computes the lower bound costs for cost-based pruning without proper awareness of sparsity exploiting operators. This led to suboptimal plans because sub areas of the search space are pruned too eagerly.



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