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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SYSTEMML-1589) conv2d_bias_add fails w/ NPE on lenet with random data
Date Fri, 26 May 2017 00:35:04 GMT

    [ https://issues.apache.org/jira/browse/SYSTEMML-1589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16025608#comment-16025608
] 

Matthias Boehm commented on SYSTEMML-1589:
------------------------------------------

apparently, a similar issue (with slightly changed line numbers) still occasionally happens
{code}
Caused by: java.lang.NullPointerException
        at org.apache.sysml.runtime.matrix.data.LibMatrixDNN.getRowInDenseFormat(LibMatrixDNN.java:1359)
        at org.apache.sysml.runtime.matrix.data.LibMatrixDNN.doIm2colSparse(LibMatrixDNN.java:1380)
        at org.apache.sysml.runtime.matrix.data.LibMatrixDNN.doIm2col(LibMatrixDNN.java:1419)
        at org.apache.sysml.runtime.matrix.data.LibMatrixDNN.doLoopedIm2ColConv2d(LibMatrixDNN.java:404)
        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:1141)
        at org.apache.sysml.runtime.matrix.data.LibMatrixDNN$ConvTask.call(LibMatrixDNN.java:1074)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
{code}

> conv2d_bias_add fails w/ NPE on lenet with random data
> ------------------------------------------------------
>
>                 Key: SYSTEMML-1589
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1589
>             Project: SystemML
>          Issue Type: Bug
>            Reporter: Matthias Boehm
>            Assignee: Niketan Pansare
>             Fix For: SystemML 1.0
>
>
> The lenet dml script fails with a null pointer exception for random multi class data,
generated with
> {code}
> X_full = rand(rows=60000,cols=784);
> y_full = round(rand(rows=nrow(X_full), cols=1, min=1, max=10));
> {code}
> The detailed stacktrace is as follows:
> {code}
> 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)
> {code}



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