Matthias Boehm created SYSTEMML-1853: ----------------------------------------
Summary: StepLinreg is failing w/ recompilation issue Key: SYSTEMML-1853 URL: https://issues.apache.org/jira/browse/SYSTEMML-1853 Project: SystemML Issue Type: Bug Reporter: Matthias Boehm Our step-wise LinregDS is currently failing with the following NPE on dynamic recompilation {code} Caused by: java.lang.NullPointerException at org.apache.sysml.lops.BinaryScalar.getOpcode(BinaryScalar.java:111) at org.apache.sysml.lops.BinaryScalar.getInstructions(BinaryScalar.java:87) at org.apache.sysml.lops.compile.Dag.generateControlProgramJobs(Dag.java:1406) at org.apache.sysml.lops.compile.Dag.doGreedyGrouping(Dag.java:1176) at org.apache.sysml.lops.compile.Dag.getJobs(Dag.java:270) at org.apache.sysml.hops.recompile.Recompiler.recompileHopsDag(Recompiler.java:239) at org.apache.sysml.runtime.controlprogram.ProgramBlock.execute(ProgramBlock.java:147) {code} The root cause is that some rewrite modified the input solve to a scalar, which causes the instruction generation of solve to fail because it is not defined over scalars. -- This message was sent by Atlassian JIRA (v6.4.14#64029)