[jira] [Created] (UIMA-5893) Experiment to schedule multiple threads together at barrier points in pipeline

["Marshall Schor (JIRA)" <de...@uima.apache.org>]

Marshall Schor created UIMA-5893:
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             Summary: Experiment to schedule multiple threads together at barrier points in pipeline
                 Key: UIMA-5893
                 URL: https://issues.apache.org/jira/browse/UIMA-5893
             Project: UIMA
          Issue Type: Brainstorming
          Components: Core Java Framework
            Reporter: Marshall Schor
            Assignee: Marshall Schor


This Jira covers experimental, disabled code done as an experiment to explore performance implications of putting in barriers in a UIMA pipeline, so that multiple threads would wait at the barrier until a bunch of them had arrived, and then they would be released together. The intuition motivating this was that in highly multi-threaded machines, running the same annotators together, might improve locality-of-reference for l1/l2/l3 memory caches, potentially speeding up execution.

After one set of experiments which failed to show improvement (for possibly many reasons, not yet investigated), this code is disabled, but kept in the project in case of future interest.



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