[ https://issues.apache.org/jira/browse/SYSTEMML-2161?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Matthias Boehm closed SYSTEMML-2161. ------------------------------------ > Suboptimal codegen plans for ALS due to wrong cost model memoization > -------------------------------------------------------------------- > > Key: SYSTEMML-2161 > URL: https://issues.apache.org/jira/browse/SYSTEMML-2161 > Project: SystemML > Issue Type: Bug > Reporter: Matthias Boehm > Assignee: Matthias Boehm > Priority: Major > Fix For: SystemML 1.1 > > > Due to a change from 1 to 0-based ID sequences in SystemML, there is a > codegen cost model memoization issue for special cases of the first cost > vector per optimization problem. For ALS-CG over amazon this has severe > performance implications causing a slowdown of more than 2x. -- This message was sent by Atlassian JIRA (v7.6.3#76005)