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Posted to issues@spark.apache.org by "Burak Yavuz (JIRA)" <ji...@apache.org> on 2015/08/30 07:31:45 UTC

[jira] [Created] (SPARK-10353) MLlib BLAS gemm outputs wrong result when beta = 0.0 for transpose transpose matrix multiplication

Burak Yavuz created SPARK-10353:
-----------------------------------

             Summary: MLlib BLAS gemm outputs wrong result when beta = 0.0 for transpose transpose matrix multiplication
                 Key: SPARK-10353
                 URL: https://issues.apache.org/jira/browse/SPARK-10353
             Project: Spark
          Issue Type: Bug
          Components: MLlib
            Reporter: Burak Yavuz


Basically 
{code}
if (beta != 0.0) {
  f2jBLAS.dscal(C.values.length, beta, C.values, 1)
}
{code}
should be
{code}
if (beta != 1.0) {
  f2jBLAS.dscal(C.values.length, beta, C.values, 1)
}
{code}



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