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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] [Updated] (SPARK-10353) MLlib BLAS gemm outputs wrong result
when beta = 0.0 for transpose transpose matrix multiplication
[ https://issues.apache.org/jira/browse/SPARK-10353?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Burak Yavuz updated SPARK-10353:
--------------------------------
Affects Version/s: 1.5.0
> 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
> Affects Versions: 1.5.0
> 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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