[SYSTEMDS-3033] Native BLAS tsmm right fails w/ corrupt nnz

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: SystemDS 2.1
• Assignee: Matthias Boehm
• Reporter: Matthias Boehm
• Created: 18/Jun/21 23:17
• Updated: 18/Jun/21 23:28
• Resolved: 18/Jun/21 23:28

Description

Caused by: java.lang.ArrayIndexOutOfBoundsException: 9664
        at org.apache.sysds.runtime.matrix.data.MatrixBlock.denseToSparse(MatrixBlock.java:1205)
        at org.apache.sysds.runtime.matrix.data.MatrixBlock.examSparsity(MatrixBlock.java:1118)
        at org.apache.sysds.runtime.matrix.data.MatrixBlock.examSparsity(MatrixBlock.java:1092)
        at org.apache.sysds.runtime.matrix.data.LibMatrixNative.tsmm(LibMatrixNative.java:191)
        at org.apache.sysds.runtime.matrix.data.MatrixBlock.transposeSelfMatrixMultOperations(MatrixBlock.java:3770)
        at org.apache.sysds.runtime.instructions.cp.MMTSJCPInstruction.processInstruction(MMTSJCPInstruction.java:62)
        at org.apache.sysds.runtime.controlprogram.ProgramBlock.executeSingleInstruction(ProgramBlock.java:250)

Furthermore, there were occasional segmentation faults due to the nnz computation running over the length of the output array.