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Posted to issues@systemml.apache.org by "Matthias Boehm (JIRA)" <ji...@apache.org> on 2017/08/15 23:54:00 UTC

[jira] [Created] (SYSTEMML-1841) Performance issue codegen outer over ultra-sparse matrices

Matthias Boehm created SYSTEMML-1841:
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             Summary: Performance issue codegen outer over ultra-sparse matrices
                 Key: SYSTEMML-1841
                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1841
             Project: SystemML
          Issue Type: Bug
            Reporter: Matthias Boehm


Experiments with codegen outer operations over the Amazon Books review dataset (8,026,324 x 2,330,066, nnz=22,507,155, i.e., sparsity=10^(-6)) showed unnecessary overhead for this ultra-sparse data set. This task aims to remove this overhead.



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