systemml-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Matthias Boehm (JIRA)" <>
Subject [jira] [Created] (SYSTEMML-2069) Thread contention on heaver hitter maintenance
Date Fri, 12 Jan 2018 02:00:03 GMT
Matthias Boehm created SYSTEMML-2069:

             Summary: Thread contention on heaver hitter maintenance
                 Key: SYSTEMML-2069
             Project: SystemML
          Issue Type: Bug
            Reporter: Matthias Boehm

In multi-threaded applications with many small operations, the synchronized maintenance of
heavy hitters can turn into a bottleneck. Example scenarios are JMLC scoring with multiple
JMLC streams per node and local parfor scripts.

All statistics other than the heavy hitters are already using {{LongAdder}}s to scale under
heavy contention. This task aims to make the heavy hitter contention lock-free, i.e., remove
the unnecessary contention.

This message was sent by Atlassian JIRA

View raw message