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https://issues.apache.org/jira/browse/SYSTEMML-2098?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm closed SYSTEMML-2098.
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Resolution: Fixed
Assignee: Matthias Boehm
Fix Version/s: SystemML 1.1
> Sparse result merge w/ empty in-place target hangs
> --------------------------------------------------
>
> Key: SYSTEMML-2098
> URL: https://issues.apache.org/jira/browse/SYSTEMML-2098
> Project: SystemML
> Issue Type: Bug
> Reporter: Matthias Boehm
> Assignee: Matthias Boehm
> Priority: Major
> Fix For: SystemML 1.1
>
>
> For the following script, the parfor optimizer marks X for update in place,
> which in turn causes its empty allocation in CSR. Merging the first sparse
> matrix then hangs in an endless loop trying to allocate the target.
> {code}
> X = matrix(0, rows=10000, cols=10000);
> parfor(i in 1:12, log=DEBUG) {
> X += rand(rows=10000,cols=10000, sparsity=0.2, seed=7);
> while(FALSE){}
> print("iteration "+i);
> }
> print(sum(X));
> {code}
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