Matthias Boehm created SYSTEMML-1817: ----------------------------------------
Summary: Full variance computation fails due to wrong data type Key: SYSTEMML-1817 URL: https://issues.apache.org/jira/browse/SYSTEMML-1817 Project: SystemML Issue Type: Bug Reporter: Matthias Boehm The following script currently fails due to incorrect hop construction of {{var(Xi)}} at language level: {code} X = rand(rows=1000, cols=100); R = matrix(0, ncol(X), 4) parfor(i in 1:ncol(X), log=DEBUG) { Xi = X[,i]; R[i,1] = mean(Xi); # mean R[i,2] = sd(Xi); # standard deviation R[i,3] = moment(Xi,3)/(sd(Xi)^3); # skewness R[i,4] = moment(Xi,4)/(sd(Xi)^4)-3; # kurtosis } {code} The stacktrace is as follows {code} Caused by: org.apache.sysml.runtime.DMLRuntimeException: Variable '_Var1703' does not exist in the symbol table. at org.apache.sysml.runtime.controlprogram.context.ExecutionContext.getMatrixObject(ExecutionContext.java:186) at org.apache.sysml.runtime.controlprogram.context.ExecutionContext.setMatrixOutput(ExecutionContext.java:451) at org.apache.sysml.runtime.instructions.cp.MatrixBuiltinCPInstruction.processInstruction(MatrixBuiltinCPInstruction.java:59) at org.apache.sysml.runtime.controlprogram.ProgramBlock.executeSingleInstruction(ProgramBlock.java:286) ... 6 more {code} which is cause by the following instruction which has an output type MATRIX although it should be SCALAR. {code} --------CP uavar _mVar3.MATRIX.DOUBLE _mVar5.MATRIX.DOUBLE 24 {code} -- This message was sent by Atlassian JIRA (v6.4.14#64029)