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https://issues.apache.org/jira/browse/MAHOUT-1166?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebastian Schelter updated MAHOUT-1166:
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Attachment: MAHOUT-1166.patch
> Multithreaded version of distributed ALS
> ----------------------------------------
>
> Key: MAHOUT-1166
> URL: https://issues.apache.org/jira/browse/MAHOUT-1166
> Project: Mahout
> Issue Type: Improvement
> Components: Collaborative Filtering
> Reporter: Sebastian Schelter
> Assignee: Sebastian Schelter
> Attachments: MAHOUT-1166.patch
>
>
> Our implementation of ALS broadcasts the feature matrices in each iteration.
> Therefore, it makes sense to run the mappers in multithreaded mode to not
> have to load one copy of the feature matrix per core, but share the read-only
> in-memory copy.
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