Matthias Boehm created SYSTEMML-1755:
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             Summary: 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


{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}



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