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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SYSTEMML-1755) Failed instruction generation during dynamic recompilation
Date Fri, 14 Jul 2017 19:57:00 GMT

     [ https://issues.apache.org/jira/browse/SYSTEMML-1755?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matthias Boehm resolved SYSTEMML-1755.
--------------------------------------
       Resolution: Fixed
         Assignee: Matthias Boehm
    Fix Version/s: SystemML 1.0

> Failed instruction generation during dynamic recompilation
> ----------------------------------------------------------
>
>                 Key: SYSTEMML-1755
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1755
>             Project: SystemML
>          Issue Type: Bug
>            Reporter: Matthias Boehm
>            Assignee: Matthias Boehm
>             Fix For: SystemML 1.0
>
>
> {code}
> Caused by: org.apache.sysml.runtime.DMLRuntimeException: Unable to recompile program
block.
>         at org.apache.sysml.runtime.controlprogram.ProgramBlock.execute(ProgramBlock.java:159)
>         at org.apache.sysml.runtime.controlprogram.FunctionProgramBlock.execute(FunctionProgramBlock.java:115)
>         ... 13 more
> Caused by: java.lang.NullPointerException
>         at org.apache.sysml.lops.BinaryScalar.getOpcode(BinaryScalar.java:119)
>         at org.apache.sysml.lops.BinaryScalar.getInstructions(BinaryScalar.java:84)
>         at org.apache.sysml.lops.compile.Dag.generateControlProgramJobs(Dag.java:1405)
>         at org.apache.sysml.lops.compile.Dag.doGreedyGrouping(Dag.java:1175)
>         at org.apache.sysml.lops.compile.Dag.getJobs(Dag.java:269)
>         at org.apache.sysml.hops.recompile.Recompiler.recompileHopsDag(Recompiler.java:240)
>         at org.apache.sysml.runtime.controlprogram.ProgramBlock.execute(ProgramBlock.java:147)
>         ... 14 more
> {code}
> The root cause was a simplification rewrite for binary matrix-scalar operations which
did not account for unsupported scalar operations such as {{OpOp2.QUANTILE, OpOp2.CENTRALMOMENT,
OpOp2.MINUS1_MULT, OpOp2.MINUS_NZ, OpOp2.LOG_NZ}}.



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