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https://issues.apache.org/jira/browse/SYSTEMML-2034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm updated SYSTEMML-2034:
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Priority: Blocker (was: Major)
> Performance issue sparse-dense maxpooling backward
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>
> Key: SYSTEMML-2034
> URL: https://issues.apache.org/jira/browse/SYSTEMML-2034
> Project: SystemML
> Issue Type: Bug
>Reporter: Matthias Boehm
>Priority: Blocker
>
> The current implementation of sparse-dense maxpooling_backward uses for every
> p-q combination a full scan over the sparse row just to find the applicable
> range. We should instead flip this dense implementation to a "real" sparse
> implementation that scans the sparse input just once.
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