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https://issues.apache.org/jira/browse/SYSTEMML-2014?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm closed SYSTEMML-2014.
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       Resolution: Fixed
         Assignee: Matthias Boehm
    Fix Version/s: SystemML 1.0

> New optional sideffect parameter for external functions
> -------------------------------------------------------
>
>                 Key: SYSTEMML-2014
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2014
>             Project: SystemML
>          Issue Type: Task
>            Reporter: Matthias Boehm
>            Assignee: Matthias Boehm
>             Fix For: SystemML 1.0
>
>
> Currently, we need to be very conservative about merging blocks with external 
> functions because these might have side effects (e.g., write, read). This 
> task aims to introduce a new optional parameter to make side effects 
> explicit, which allows for more aggressive rewrites regarding all other 
> external functions.



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