[
https://issues.apache.org/jira/browse/SYSTEMML-1721?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Glenn Weidner updated SYSTEMML-1721:
------------------------------------
Fix Version/s: (was: SystemML 1.0)
SystemML 0.15
> Invalid cplan reuse from plan cache
> ------------------------------------
>
> Key: SYSTEMML-1721
> URL: https://issues.apache.org/jira/browse/SYSTEMML-1721
> Project: SystemML
> Issue Type: Bug
> Reporter: Matthias Boehm
> Assignee: Matthias Boehm
> Fix For: SystemML 0.15
>
>
> Cplans (code generation plans) are hashed and compared in order to reuse
> compiled classes in the context of the existing plan cache. In order to
> increase reuse potential, this comparison does not include leaf not names or
> IDs but their data types and the entire operation DAG on top. However, this
> leads to invalid reuse for patterns such {{(c1+c3)*(c2+c3)}} and
> {{(c1+c2)*(c3+c3)}}, which are assumed to be equivalent but compute very
> different results.
> This task aims to fix this for the general case and introduce a dedicated
> test suite to ensure proper comparison.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
