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https://issues.apache.org/jira/browse/SYSTEMML-2400?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm closed SYSTEMML-2400.
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Resolution: Fixed
Assignee: Matthias Boehm
Fix Version/s: SystemML 1.2
> Dynamic recompilation loses max thread constraints of hops
> ----------------------------------------------------------
>
> Key: SYSTEMML-2400
> URL: https://issues.apache.org/jira/browse/SYSTEMML-2400
> Project: SystemML
> Issue Type: Bug
> Reporter: Matthias Boehm
> Assignee: Matthias Boehm
> Priority: Major
> Fix For: SystemML 1.2
>
>
> Dynamic recompilation deep copies the hop DAG and applies - among other
> things - various rewrites. In case these rewrites create new hops (no inplace
> modification) these rewrites lose the max thread constraints set by parfor
> and paramserv. On nodes with large degree of parallelism this constitutes a
> serious issue because it leads to large over-provisioning and thus reduced
> performance and potential OOMs.
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