[SYSTEMDS-1589] conv2d_bias_add fails w/ NPE on lenet with random data

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: SystemML 0.15
• Assignee: Niketan Pansare
• Reporter: Matthias Boehm
• Created: 08/May/17 02:06
• Updated: 09/Sep/17 04:48
• Resolved: 08/May/17 04:19

Description

The lenet dml script fails with a null pointer exception for random multi class data, generated with

X_full = rand(rows=60000,cols=784);
y_full = round(rand(rows=nrow(X_full), cols=1, min=1, max=10));

The detailed stacktrace is as follows:

Caused by: java.lang.NullPointerException
        at org.apache.sysml.runtime.matrix.data.LibMatrixDNN.getRowInDenseFormat(LibMatrixDNN.java:1355)
        at org.apache.sysml.runtime.matrix.data.LibMatrixDNN.doIm2colSparse(LibMatrixDNN.java:1382)
        at org.apache.sysml.runtime.matrix.data.LibMatrixDNN.doIm2col(LibMatrixDNN.java:1421)
        at org.apache.sysml.runtime.matrix.data.LibMatrixDNN.doLoopedIm2ColConv2d(LibMatrixDNN.java:406)
        at org.apache.sysml.runtime.matrix.data.LibMatrixDNN.access$400(LibMatrixDNN.java:51)
        at org.apache.sysml.runtime.matrix.data.LibMatrixDNN$ConvTask.call(LibMatrixDNN.java:1143)
        at org.apache.sysml.runtime.matrix.data.LibMatrixDNN$ConvTask.call(LibMatrixDNN.java:1076)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:748)