Matthias Boehm created SYSTEMML-1644:
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Summary: Incorrect results on multi-threaded dense-dense matrix
multiply w/ wide rhs
Key: SYSTEMML-1644
URL: https://issues.apache.org/jira/browse/SYSTEMML-1644
Project: SystemML
Issue Type: Bug
Reporter: Matthias Boehm
The following matrix multiply expression yields incorrect results compared to R
when run with multi-threaded operations but correct results with
single-threaded operations.
{code}
# X is dense 2023 x 1987 matrix
# t(U) is dense 10 x 2023 matrix
R = t(U) %*% X;
{code}
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