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https://issues.apache.org/jira/browse/SYSTEMML-2293?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm closed SYSTEMML-2293.
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Resolution: Fixed
Assignee: Matthias Boehm
Fix Version/s: SystemML 1.2
> Parfor w/ reused data partitioning causes diverging results
> -----------------------------------------------------------
>
> Key: SYSTEMML-2293
> URL: https://issues.apache.org/jira/browse/SYSTEMML-2293
> Project: SystemML
> Issue Type: Bug
> Reporter: Matthias Boehm
> Assignee: Matthias Boehm
> Priority: Major
> Fix For: SystemML 1.2
>
>
> For a special case of the following parfor structure, we see diverging
> results with and without parfor data partitioning which are reused across the
> while loop iterations.
> {code}
> while(...) {
> parfor(...) {
> Xi = X[i,] #reused row-wise partitioning
> }
> parfor(...) {
> Xj = X[,j] #reused col-wise partitioning
> }
> }
> {code}
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