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Posted to issues@systemml.apache.org by "Matthias Boehm (JIRA)" <ji...@apache.org> on 2016/09/14 21:43:20 UTC
[jira] [Updated] (SYSTEMML-921) Error handling for non-existing
variables on function calls
[ https://issues.apache.org/jira/browse/SYSTEMML-921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Matthias Boehm updated SYSTEMML-921:
------------------------------------
Description:
Due to unbounded scoping in conditional control flow, during runtime certain variables might be non-existing. Consider the following example script
{code}
foo = function(Matrix[Double] A, Matrix[Double] B, Double d)
return( Matrix[Double] C)
{
C = A;
if( d>0 )
C = C + B;
}
X1 = rand(rows=1000,cols=1000);
if(sum(X1) < 1)
X2 = rand(rows=1000,cols=1000);
X3 = foo(X1, X2, 7);
print(sum(X3));
{code}
Depending on the data, X2 is not existing. We need to improve the error handling of these cases as the user currently gets the following unhelpful error message:
{code}
Caused by: org.apache.sysml.runtime.DMLRuntimeException: ERROR: Runtime error in program block generated from statement block between lines 14 and 14 -- Error evaluating instruction: CP°extfunct°.defaultNS°foo°3°1°X1·MATRIX·DOUBLE°X2·MATRIX·DOUBLE°7·SCALAR·INT·true°X3
at org.apache.sysml.runtime.controlprogram.ProgramBlock.executeSingleInstruction(ProgramBlock.java:335)
at org.apache.sysml.runtime.controlprogram.ProgramBlock.executeInstructions(ProgramBlock.java:224)
at org.apache.sysml.runtime.controlprogram.ProgramBlock.execute(ProgramBlock.java:168)
at org.apache.sysml.runtime.controlprogram.Program.execute(Program.java:145)
... 8 more
Caused by: org.apache.sysml.runtime.DMLRuntimeException: Unknown variable: null
at org.apache.sysml.runtime.controlprogram.context.ExecutionContext.getScalarInput(ExecutionContext.java:395)
at org.apache.sysml.runtime.instructions.cp.FunctionCallCPInstruction.processInstruction(FunctionCallCPInstruction.java:151)
at org.apache.sysml.runtime.controlprogram.ProgramBlock.executeSingleInstruction(ProgramBlock.java:305)
{code}
> Error handling for non-existing variables on function calls
> -----------------------------------------------------------
>
> Key: SYSTEMML-921
> URL: https://issues.apache.org/jira/browse/SYSTEMML-921
> Project: SystemML
> Issue Type: Bug
> Components: Runtime
> Reporter: Matthias Boehm
>
> Due to unbounded scoping in conditional control flow, during runtime certain variables might be non-existing. Consider the following example script
> {code}
> foo = function(Matrix[Double] A, Matrix[Double] B, Double d)
> return( Matrix[Double] C)
> {
> C = A;
> if( d>0 )
> C = C + B;
> }
> X1 = rand(rows=1000,cols=1000);
> if(sum(X1) < 1)
> X2 = rand(rows=1000,cols=1000);
> X3 = foo(X1, X2, 7);
> print(sum(X3));
> {code}
> Depending on the data, X2 is not existing. We need to improve the error handling of these cases as the user currently gets the following unhelpful error message:
> {code}
> Caused by: org.apache.sysml.runtime.DMLRuntimeException: ERROR: Runtime error in program block generated from statement block between lines 14 and 14 -- Error evaluating instruction: CP°extfunct°.defaultNS°foo°3°1°X1·MATRIX·DOUBLE°X2·MATRIX·DOUBLE°7·SCALAR·INT·true°X3
> at org.apache.sysml.runtime.controlprogram.ProgramBlock.executeSingleInstruction(ProgramBlock.java:335)
> at org.apache.sysml.runtime.controlprogram.ProgramBlock.executeInstructions(ProgramBlock.java:224)
> at org.apache.sysml.runtime.controlprogram.ProgramBlock.execute(ProgramBlock.java:168)
> at org.apache.sysml.runtime.controlprogram.Program.execute(Program.java:145)
> ... 8 more
> Caused by: org.apache.sysml.runtime.DMLRuntimeException: Unknown variable: null
> at org.apache.sysml.runtime.controlprogram.context.ExecutionContext.getScalarInput(ExecutionContext.java:395)
> at org.apache.sysml.runtime.instructions.cp.FunctionCallCPInstruction.processInstruction(FunctionCallCPInstruction.java:151)
> at org.apache.sysml.runtime.controlprogram.ProgramBlock.executeSingleInstruction(ProgramBlock.java:305)
> {code}
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