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https://issues.apache.org/jira/browse/SYSTEMML-1310?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm resolved SYSTEMML-1310.
--------------------------------------
       Resolution: Done
         Assignee: Matthias Boehm
    Fix Version/s: SystemML 1.0

> Parfor block partitioning (mini batches)
> ----------------------------------------
>
>                 Key: SYSTEMML-1310
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1310
>             Project: SystemML
>          Issue Type: Sub-task
>          Components: APIs, Runtime
>            Reporter: Matthias Boehm
>            Assignee: Matthias Boehm
>             Fix For: SystemML 1.0
>
>
> This task aims to add basic support for block partitioning of fixed size 
> batches of rows or columns in the parfor optimizer and runtime. For now, we 
> will only apply this for the spark execution backend. The basic supported 
> form looks as follows, where we require that batches are aligned with the 
> systemml blocksize.
> {code}
> N = 20;
> parfor(bi in 1 : nrow(X)/N) {
>    Xbi = X[((bi-1)*N+1):(bi*N), ];
>    R[bi, 1] = sum(Xbi);
> }
> {code}



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