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Posted to issues@systemml.apache.org by "Matthias Boehm (JIRA)" <ji...@apache.org> on 2017/11/03 02:38:00 UTC

[jira] [Created] (SYSTEMML-1984) Robustness JMLC wrt non-thread-local prepare and execute

Matthias Boehm created SYSTEMML-1984:
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             Summary: Robustness JMLC wrt non-thread-local prepare and execute
                 Key: SYSTEMML-1984
                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1984
             Project: SystemML
          Issue Type: Task
            Reporter: Matthias Boehm
            Priority: Blocker


The JMLC API has an underlying assumption that prepared scripts are created and executed by the same thread because compiler configurations and output variable names for dynamic recompilation are maintained with thread-local variables. However, in complex scoring pipelines this is not the case leading to performance issues (e.g., multi-threaded operations despite single-threaded configuration) and in the worst case lost result variables. 



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