systemml-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SYSTEMML-2069) Thread contention on heavy hitter maintenance
Date Fri, 12 Jan 2018 02:01:00 GMT

     [ https://issues.apache.org/jira/browse/SYSTEMML-2069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matthias Boehm updated SYSTEMML-2069:
-------------------------------------
    Summary: Thread contention on heavy hitter maintenance  (was: Thread contention on heaver
hitter maintenance)

> Thread contention on heavy hitter maintenance
> ---------------------------------------------
>
>                 Key: SYSTEMML-2069
>                 URL: https://issues.apache.org/jira/browse/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
(v6.4.14#64029)

Mime
View raw message