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https://issues.apache.org/jira/browse/SYSTEMML-651?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Deron Eriksson closed SYSTEMML-651.
-----------------------------------
> Fix scalar input support for JMLC
> ---------------------------------
>
> Key: SYSTEMML-651
> URL: https://issues.apache.org/jira/browse/SYSTEMML-651
> Project: SystemML
> Issue Type: Bug
> Components: APIs
> Reporter: Deron Eriksson
> Assignee: Deron Eriksson
> Priority: Minor
>
> Currently scalar input variables via JMLC do not work.
> Sample DML (matrix input, scalar input, and a matrix output):
> {code}
> inMatrix = read("./tmp/inMatrix", rows=-1, cols=-1);
> print('inMatrix: ' + nrow(inMatrix) + 'x' + ncol(inMatrix));
> inScalar = read("./tmp/inScalar", data_type="scalar", value_type="int");
> print('inScalar: ' + inScalar);
> outMatrix = matrix("1 2 3 0", rows=2, cols=2);
> print('outMatrix: ' + nrow(outMatrix) + 'x' + ncol(outMatrix));
> write(outMatrix, "./tmp", format="text");
> {code}
> JMLC code:
> {code}
> Connection conn = new Connection();
> String dml = conn.readScript("scalar-test.dml");
> PreparedScript script = conn.prepareScript(dml, new String[] { "inMatrix",
> "inScalar" }, new String[] { "outMatrix" }, false);
> double[][] inMatrix = matrix(2, 2, new double[] { 1, 2, 3, 4 });
> int inScalar = 5;
> script.setMatrix("inMatrix", inMatrix);
> script.setScalar("inScalar", inScalar);
> ResultVariables results = script.executeScript();
> double[][] result = results.getMatrix("outMatrix");
> {code}
> Generates the following error:
> {code}
> Exception in thread "main" org.apache.sysml.runtime.DMLRuntimeException:
> org.apache.sysml.runtime.DMLRuntimeException: ERROR: Runtime error in program
> block generated from statement block between lines 1 and 9 -- Error
> evaluating instruction:
> CP°read°_Var4·SCALAR·INT·false°./tmp/inScalar·SCALAR·STRING·true
> at
> org.apache.sysml.runtime.controlprogram.Program.execute(Program.java:152)
> at
> org.apache.sysml.api.jmlc.PreparedScript.executeScript(PreparedScript.java:390)
> at org.apache.sysml.JMLCExampleScalar.main(JMLCExampleScalar.java:26)
> Caused by: org.apache.sysml.runtime.DMLRuntimeException: ERROR: Runtime error
> in program block generated from statement block between lines 1 and 9 --
> Error evaluating instruction:
> CP°read°_Var4·SCALAR·INT·false°./tmp/inScalar·SCALAR·STRING·true
> at
> org.apache.sysml.runtime.controlprogram.ProgramBlock.executeSingleInstruction(ProgramBlock.java:333)
> at
> org.apache.sysml.runtime.controlprogram.ProgramBlock.executeInstructions(ProgramBlock.java:222)
> at
> org.apache.sysml.runtime.controlprogram.ProgramBlock.execute(ProgramBlock.java:166)
> at
> org.apache.sysml.runtime.controlprogram.Program.execute(Program.java:145)
> ... 2 more
> Caused by: org.apache.sysml.runtime.DMLRuntimeException:
> java.io.FileNotFoundException: File tmp/inScalar does not exist
> {code}
> The matrix input and output work fine.
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