Examples with FunctionOp org.apache.sysml.hops.FunctionOp used on opensource projects

Example 1 with FunctionOp

use of org.apache.sysml.hops.FunctionOp in project incubator-systemml by apache.

the class OptTreePlanChecker method checkFunctionNames.

private static void checkFunctionNames(Program prog, DMLProgram dprog, Hop root, ArrayList<Instruction> inst, Set<String> fnStack) throws DMLRuntimeException, HopsException {
    //reset visit status of dag
    root.resetVisitStatus();
    //get all function op in this dag
    HashMap<String, FunctionOp> fops = new HashMap<String, FunctionOp>();
    getAllFunctionOps(root, fops);
    for (Instruction linst : inst) if (linst instanceof FunctionCallCPInstruction) {
        FunctionCallCPInstruction flinst = (FunctionCallCPInstruction) linst;
        String fnamespace = flinst.getNamespace();
        String fname = flinst.getFunctionName();
        String key = DMLProgram.constructFunctionKey(fnamespace, fname);
        //check 1: instruction name equal to hop name
        if (!fops.containsKey(key))
            throw new DMLRuntimeException("Function Check: instruction and hop names differ (" + key + ", " + fops.keySet() + ")");
        //check 2: function exists
        if (!prog.getFunctionProgramBlocks().containsKey(key))
            throw new DMLRuntimeException("Function Check: function does not exits (" + key + ")");
        //check 3: recursive program check
        FunctionProgramBlock fpb = prog.getFunctionProgramBlock(fnamespace, fname);
        FunctionStatementBlock fsb = dprog.getFunctionStatementBlock(fnamespace, fname);
        if (!fnStack.contains(key)) {
            fnStack.add(key);
            checkProgramCorrectness(fpb, fsb, fnStack);
            fnStack.remove(key);
        }
    }
}

Example 2 with FunctionOp

use of org.apache.sysml.hops.FunctionOp in project incubator-systemml by apache.

the class DMLTranslator method constructHops.

public void constructHops(StatementBlock sb) throws ParseException, LanguageException {
    if (sb instanceof WhileStatementBlock) {
        constructHopsForWhileControlBlock((WhileStatementBlock) sb);
        return;
    }
    if (sb instanceof IfStatementBlock) {
        constructHopsForIfControlBlock((IfStatementBlock) sb);
        return;
    }
    if (sb instanceof ForStatementBlock) {
        //NOTE: applies to ForStatementBlock and ParForStatementBlock
        constructHopsForForControlBlock((ForStatementBlock) sb);
        return;
    }
    if (sb instanceof FunctionStatementBlock) {
        constructHopsForFunctionControlBlock((FunctionStatementBlock) sb);
        return;
    }
    HashMap<String, Hop> ids = new HashMap<String, Hop>();
    ArrayList<Hop> output = new ArrayList<Hop>();
    VariableSet liveIn = sb.liveIn();
    VariableSet liveOut = sb.liveOut();
    VariableSet updated = sb._updated;
    VariableSet gen = sb._gen;
    VariableSet updatedLiveOut = new VariableSet();
    // handle liveout variables that are updated --> target identifiers for Assignment
    HashMap<String, Integer> liveOutToTemp = new HashMap<String, Integer>();
    for (int i = 0; i < sb.getNumStatements(); i++) {
        Statement current = sb.getStatement(i);
        if (current instanceof AssignmentStatement) {
            AssignmentStatement as = (AssignmentStatement) current;
            DataIdentifier target = as.getTarget();
            if (target != null) {
                if (liveOut.containsVariable(target.getName())) {
                    liveOutToTemp.put(target.getName(), Integer.valueOf(i));
                }
            }
        }
        if (current instanceof MultiAssignmentStatement) {
            MultiAssignmentStatement mas = (MultiAssignmentStatement) current;
            for (DataIdentifier target : mas.getTargetList()) {
                if (liveOut.containsVariable(target.getName())) {
                    liveOutToTemp.put(target.getName(), Integer.valueOf(i));
                }
            }
        }
    }
    //	(i.e., from LV analysis, updated and gen sets)
    if (!liveIn.getVariables().values().isEmpty()) {
        for (String varName : liveIn.getVariables().keySet()) {
            if (updated.containsVariable(varName) || gen.containsVariable(varName)) {
                DataIdentifier var = liveIn.getVariables().get(varName);
                long actualDim1 = (var instanceof IndexedIdentifier) ? ((IndexedIdentifier) var).getOrigDim1() : var.getDim1();
                long actualDim2 = (var instanceof IndexedIdentifier) ? ((IndexedIdentifier) var).getOrigDim2() : var.getDim2();
                DataOp read = new DataOp(var.getName(), var.getDataType(), var.getValueType(), DataOpTypes.TRANSIENTREAD, null, actualDim1, actualDim2, var.getNnz(), var.getRowsInBlock(), var.getColumnsInBlock());
                read.setAllPositions(var.getBeginLine(), var.getBeginColumn(), var.getEndLine(), var.getEndColumn());
                ids.put(varName, read);
            }
        }
    }
    for (int i = 0; i < sb.getNumStatements(); i++) {
        Statement current = sb.getStatement(i);
        if (current instanceof OutputStatement) {
            OutputStatement os = (OutputStatement) current;
            DataExpression source = os.getSource();
            DataIdentifier target = os.getIdentifier();
            //error handling unsupported indexing expression in write statement
            if (target instanceof IndexedIdentifier) {
                throw new LanguageException(source.printErrorLocation() + ": Unsupported indexing expression in write statement. " + "Please, assign the right indexing result to a variable and write this variable.");
            }
            DataOp ae = (DataOp) processExpression(source, target, ids);
            String formatName = os.getExprParam(DataExpression.FORMAT_TYPE).toString();
            ae.setInputFormatType(Expression.convertFormatType(formatName));
            if (ae.getDataType() == DataType.SCALAR) {
                ae.setOutputParams(ae.getDim1(), ae.getDim2(), ae.getNnz(), ae.getUpdateType(), -1, -1);
            } else {
                switch(ae.getInputFormatType()) {
                    case TEXT:
                    case MM:
                    case CSV:
                        // write output in textcell format
                        ae.setOutputParams(ae.getDim1(), ae.getDim2(), ae.getNnz(), ae.getUpdateType(), -1, -1);
                        break;
                    case BINARY:
                        // write output in binary block format
                        ae.setOutputParams(ae.getDim1(), ae.getDim2(), ae.getNnz(), ae.getUpdateType(), ConfigurationManager.getBlocksize(), ConfigurationManager.getBlocksize());
                        break;
                    default:
                        throw new LanguageException("Unrecognized file format: " + ae.getInputFormatType());
                }
            }
            output.add(ae);
        }
        if (current instanceof PrintStatement) {
            DataIdentifier target = createTarget();
            target.setDataType(DataType.SCALAR);
            target.setValueType(ValueType.STRING);
            target.setAllPositions(current.getFilename(), current.getBeginLine(), target.getBeginColumn(), current.getEndLine(), current.getEndColumn());
            PrintStatement ps = (PrintStatement) current;
            PRINTTYPE ptype = ps.getType();
            try {
                if (ptype == PRINTTYPE.PRINT) {
                    Hop.OpOp1 op = Hop.OpOp1.PRINT;
                    Expression source = ps.getExpressions().get(0);
                    Hop ae = processExpression(source, target, ids);
                    Hop printHop = new UnaryOp(target.getName(), target.getDataType(), target.getValueType(), op, ae);
                    printHop.setAllPositions(current.getBeginLine(), current.getBeginColumn(), current.getEndLine(), current.getEndColumn());
                    output.add(printHop);
                } else if (ptype == PRINTTYPE.STOP) {
                    Hop.OpOp1 op = Hop.OpOp1.STOP;
                    Expression source = ps.getExpressions().get(0);
                    Hop ae = processExpression(source, target, ids);
                    Hop stopHop = new UnaryOp(target.getName(), target.getDataType(), target.getValueType(), op, ae);
                    stopHop.setAllPositions(current.getBeginLine(), current.getBeginColumn(), current.getEndLine(), current.getEndColumn());
                    output.add(stopHop);
                } else if (ptype == PRINTTYPE.PRINTF) {
                    List<Expression> expressions = ps.getExpressions();
                    Hop[] inHops = new Hop[expressions.size()];
                    // Hop (ie, MultipleOp) as input Hops
                    for (int j = 0; j < expressions.size(); j++) {
                        Hop inHop = processExpression(expressions.get(j), target, ids);
                        inHops[j] = inHop;
                    }
                    target.setValueType(ValueType.STRING);
                    Hop printfHop = new MultipleOp(target.getName(), target.getDataType(), target.getValueType(), MultiInputOp.PRINTF, inHops);
                    output.add(printfHop);
                }
            } catch (HopsException e) {
                throw new LanguageException(e);
            }
        }
        if (current instanceof AssignmentStatement) {
            AssignmentStatement as = (AssignmentStatement) current;
            DataIdentifier target = as.getTarget();
            Expression source = as.getSource();
            // CASE: regular assignment statement -- source is DML expression that is NOT user-defined or external function 
            if (!(source instanceof FunctionCallIdentifier)) {
                // CASE: target is regular data identifier
                if (!(target instanceof IndexedIdentifier)) {
                    Hop ae = processExpression(source, target, ids);
                    ids.put(target.getName(), ae);
                    target.setProperties(source.getOutput());
                    Integer statementId = liveOutToTemp.get(target.getName());
                    if ((statementId != null) && (statementId.intValue() == i)) {
                        DataOp transientwrite = new DataOp(target.getName(), target.getDataType(), target.getValueType(), ae, DataOpTypes.TRANSIENTWRITE, null);
                        transientwrite.setOutputParams(ae.getDim1(), ae.getDim2(), ae.getNnz(), ae.getUpdateType(), ae.getRowsInBlock(), ae.getColsInBlock());
                        transientwrite.setAllPositions(target.getBeginLine(), target.getBeginColumn(), target.getEndLine(), target.getEndLine());
                        updatedLiveOut.addVariable(target.getName(), target);
                        output.add(transientwrite);
                    }
                } else // end if (!(target instanceof IndexedIdentifier)) {
                // CASE: target is indexed identifier (left-hand side indexed expression)
                {
                    Hop ae = processLeftIndexedExpression(source, (IndexedIdentifier) target, ids);
                    ids.put(target.getName(), ae);
                    // obtain origDim values BEFORE they are potentially updated during setProperties call
                    //	(this is incorrect for LHS Indexing)
                    long origDim1 = ((IndexedIdentifier) target).getOrigDim1();
                    long origDim2 = ((IndexedIdentifier) target).getOrigDim2();
                    target.setProperties(source.getOutput());
                    ((IndexedIdentifier) target).setOriginalDimensions(origDim1, origDim2);
                    // (required for scalar input to left indexing)					
                    if (target.getDataType() != DataType.MATRIX) {
                        target.setDataType(DataType.MATRIX);
                        target.setValueType(ValueType.DOUBLE);
                        target.setBlockDimensions(ConfigurationManager.getBlocksize(), ConfigurationManager.getBlocksize());
                    }
                    Integer statementId = liveOutToTemp.get(target.getName());
                    if ((statementId != null) && (statementId.intValue() == i)) {
                        DataOp transientwrite = new DataOp(target.getName(), target.getDataType(), target.getValueType(), ae, DataOpTypes.TRANSIENTWRITE, null);
                        transientwrite.setOutputParams(origDim1, origDim2, ae.getNnz(), ae.getUpdateType(), ae.getRowsInBlock(), ae.getColsInBlock());
                        transientwrite.setAllPositions(target.getBeginLine(), target.getBeginColumn(), target.getEndLine(), target.getEndColumn());
                        updatedLiveOut.addVariable(target.getName(), target);
                        output.add(transientwrite);
                    }
                }
            } else {
                //assignment, function call
                FunctionCallIdentifier fci = (FunctionCallIdentifier) source;
                FunctionStatementBlock fsb = this._dmlProg.getFunctionStatementBlock(fci.getNamespace(), fci.getName());
                //error handling missing function
                if (fsb == null) {
                    String error = source.printErrorLocation() + "function " + fci.getName() + " is undefined in namespace " + fci.getNamespace();
                    LOG.error(error);
                    throw new LanguageException(error);
                }
                //error handling unsupported function call in indexing expression
                if (target instanceof IndexedIdentifier) {
                    String fkey = DMLProgram.constructFunctionKey(fci.getNamespace(), fci.getName());
                    throw new LanguageException("Unsupported function call to '" + fkey + "' in left indexing expression. " + "Please, assign the function output to a variable.");
                }
                ArrayList<Hop> finputs = new ArrayList<Hop>();
                for (ParameterExpression paramName : fci.getParamExprs()) {
                    Hop in = processExpression(paramName.getExpr(), null, ids);
                    finputs.add(in);
                }
                //create function op
                FunctionType ftype = fsb.getFunctionOpType();
                FunctionOp fcall = null;
                if (target == null) {
                    fcall = new FunctionOp(ftype, fci.getNamespace(), fci.getName(), finputs, new String[] {});
                } else {
                    fcall = new FunctionOp(ftype, fci.getNamespace(), fci.getName(), finputs, new String[] { target.getName() });
                }
                output.add(fcall);
            //TODO function output dataops (phase 3)
            //DataOp trFoutput = new DataOp(target.getName(), target.getDataType(), target.getValueType(), fcall, DataOpTypes.FUNCTIONOUTPUT, null);
            //DataOp twFoutput = new DataOp(target.getName(), target.getDataType(), target.getValueType(), trFoutput, DataOpTypes.TRANSIENTWRITE, null);					
            }
        } else if (current instanceof MultiAssignmentStatement) {
            //multi-assignment, by definition a function call
            MultiAssignmentStatement mas = (MultiAssignmentStatement) current;
            Expression source = mas.getSource();
            if (source instanceof FunctionCallIdentifier) {
                FunctionCallIdentifier fci = (FunctionCallIdentifier) source;
                FunctionStatementBlock fsb = this._dmlProg.getFunctionStatementBlock(fci.getNamespace(), fci.getName());
                FunctionStatement fstmt = (FunctionStatement) fsb.getStatement(0);
                if (fstmt == null) {
                    LOG.error(source.printErrorLocation() + "function " + fci.getName() + " is undefined in namespace " + fci.getNamespace());
                    throw new LanguageException(source.printErrorLocation() + "function " + fci.getName() + " is undefined in namespace " + fci.getNamespace());
                }
                ArrayList<Hop> finputs = new ArrayList<Hop>();
                for (ParameterExpression paramName : fci.getParamExprs()) {
                    Hop in = processExpression(paramName.getExpr(), null, ids);
                    finputs.add(in);
                }
                //create function op
                String[] foutputs = new String[mas.getTargetList().size()];
                int count = 0;
                for (DataIdentifier paramName : mas.getTargetList()) {
                    foutputs[count++] = paramName.getName();
                }
                FunctionType ftype = fsb.getFunctionOpType();
                FunctionOp fcall = new FunctionOp(ftype, fci.getNamespace(), fci.getName(), finputs, foutputs);
                output.add(fcall);
            //TODO function output dataops (phase 3)
            /*for ( DataIdentifier paramName : mas.getTargetList() ){
						DataOp twFoutput = new DataOp(paramName.getName(), paramName.getDataType(), paramName.getValueType(), fcall, DataOpTypes.TRANSIENTWRITE, null);
						output.add(twFoutput);
					}*/
            } else if (source instanceof BuiltinFunctionExpression && ((BuiltinFunctionExpression) source).multipleReturns()) {
                // construct input hops
                Hop fcall = processMultipleReturnBuiltinFunctionExpression((BuiltinFunctionExpression) source, mas.getTargetList(), ids);
                output.add(fcall);
            } else if (source instanceof ParameterizedBuiltinFunctionExpression && ((ParameterizedBuiltinFunctionExpression) source).multipleReturns()) {
                // construct input hops
                Hop fcall = processMultipleReturnParameterizedBuiltinFunctionExpression((ParameterizedBuiltinFunctionExpression) source, mas.getTargetList(), ids);
                output.add(fcall);
            } else
                throw new LanguageException("Class \"" + source.getClass() + "\" is not supported in Multiple Assignment statements");
        }
    }
    sb.updateLiveVariablesOut(updatedLiveOut);
    sb.set_hops(output);
}

Example 3 with FunctionOp

use of org.apache.sysml.hops.FunctionOp in project incubator-systemml by apache.

the class DMLTranslator method processMultipleReturnParameterizedBuiltinFunctionExpression.

private Hop processMultipleReturnParameterizedBuiltinFunctionExpression(ParameterizedBuiltinFunctionExpression source, ArrayList<DataIdentifier> targetList, HashMap<String, Hop> hops) throws ParseException {
    FunctionType ftype = FunctionType.MULTIRETURN_BUILTIN;
    String nameSpace = DMLProgram.INTERNAL_NAMESPACE;
    // Create an array list to hold the outputs of this lop.
    // Exact list of outputs are added based on opcode.
    ArrayList<Hop> outputs = new ArrayList<Hop>();
    // Construct Hop for current builtin function expression based on its type
    Hop currBuiltinOp = null;
    switch(source.getOpCode()) {
        case TRANSFORMENCODE:
            ArrayList<Hop> inputs = new ArrayList<Hop>();
            inputs.add(processExpression(source.getVarParam("target"), null, hops));
            inputs.add(processExpression(source.getVarParam("spec"), null, hops));
            String[] outputNames = new String[targetList.size()];
            outputNames[0] = ((DataIdentifier) targetList.get(0)).getName();
            outputNames[1] = ((DataIdentifier) targetList.get(1)).getName();
            outputs.add(new DataOp(outputNames[0], DataType.MATRIX, ValueType.DOUBLE, inputs.get(0), DataOpTypes.FUNCTIONOUTPUT, outputNames[0]));
            outputs.add(new DataOp(outputNames[1], DataType.FRAME, ValueType.STRING, inputs.get(0), DataOpTypes.FUNCTIONOUTPUT, outputNames[1]));
            currBuiltinOp = new FunctionOp(ftype, nameSpace, source.getOpCode().toString(), inputs, outputNames, outputs);
            break;
        default:
            throw new ParseException("Invaid Opcode in DMLTranslator:processMultipleReturnParameterizedBuiltinFunctionExpression(): " + source.getOpCode());
    }
    // set properties for created hops based on outputs of source expression
    for (int i = 0; i < source.getOutputs().length; i++) {
        setIdentifierParams(outputs.get(i), source.getOutputs()[i]);
        outputs.get(i).setAllPositions(source.getBeginLine(), source.getBeginColumn(), source.getEndLine(), source.getEndColumn());
    }
    currBuiltinOp.setAllPositions(source.getBeginLine(), source.getBeginColumn(), source.getEndLine(), source.getEndColumn());
    return currBuiltinOp;
}

Example 4 with FunctionOp

use of org.apache.sysml.hops.FunctionOp in project incubator-systemml by apache.

the class OptimizerRuleBased method rReplaceFunctionNames.

protected void rReplaceFunctionNames(OptNode n, String oldName, String newName) throws DMLRuntimeException, HopsException {
    if (n.getNodeType() == NodeType.FUNCCALL) {
        FunctionOp fop = (FunctionOp) OptTreeConverter.getAbstractPlanMapping().getMappedHop(n.getID());
        String[] names = n.getParam(ParamType.OPSTRING).split(Program.KEY_DELIM);
        String fnamespace = names[0];
        String fname = names[1];
        if (//newName if shared hop
        fname.equals(oldName) || fname.equals(newName)) {
            //set opttree function name
            n.addParam(ParamType.OPSTRING, DMLProgram.constructFunctionKey(fnamespace, newName));
            //set instruction function name
            long parentID = OptTreeConverter.getAbstractPlanMapping().getMappedParentID(n.getID());
            ProgramBlock pb = (ProgramBlock) OptTreeConverter.getAbstractPlanMapping().getMappedProg(parentID)[1];
            ArrayList<Instruction> instArr = pb.getInstructions();
            for (int i = 0; i < instArr.size(); i++) {
                Instruction inst = instArr.get(i);
                if (inst instanceof FunctionCallCPInstruction) {
                    FunctionCallCPInstruction fci = (FunctionCallCPInstruction) inst;
                    if (oldName.equals(fci.getFunctionName()))
                        instArr.set(i, FunctionCallCPInstruction.parseInstruction(fci.toString().replaceAll(oldName, newName)));
                }
            }
            //set hop name (for recompile)
            if (fop.getFunctionName().equals(oldName))
                fop.setFunctionName(newName);
        }
    }
    //recursive invocation
    if (!n.isLeaf())
        for (OptNode c : n.getChilds()) rReplaceFunctionNames(c, oldName, newName);
}

Example 5 with FunctionOp

use of org.apache.sysml.hops.FunctionOp in project incubator-systemml by apache.

the class RewriteBlockSizeAndReblock method rule_BlockSizeAndReblock.

private void rule_BlockSizeAndReblock(Hop hop, final int blocksize) throws HopsException {
    // Go to the source(s) of the DAG
    for (Hop hi : hop.getInput()) {
        if (!hi.isVisited())
            rule_BlockSizeAndReblock(hi, blocksize);
    }
    boolean canReblock = isReblockValid();
    if (hop instanceof DataOp) {
        DataOp dop = (DataOp) hop;
        // if block size does not match
        if (canReblock && ((dop.getDataType() == DataType.MATRIX && (dop.getRowsInBlock() != blocksize || dop.getColsInBlock() != blocksize)) || (dop.getDataType() == DataType.FRAME && OptimizerUtils.isSparkExecutionMode() && (dop.getInputFormatType() == FileFormatTypes.TEXT || dop.getInputFormatType() == FileFormatTypes.CSV && OptimizerUtils.ALLOW_FRAME_CSV_REBLOCK)))) {
            if (dop.getDataOpType() == DataOp.DataOpTypes.PERSISTENTREAD) {
                // insert reblock after the hop
                dop.setRequiresReblock(true);
                dop.setOutputBlocksizes(blocksize, blocksize);
            } else if (dop.getDataOpType() == DataOp.DataOpTypes.PERSISTENTWRITE) {
                if (dop.getRowsInBlock() == -1 && dop.getColsInBlock() == -1) {
                // if this dataop is for cell output, then no reblock is needed 
                // as (A) all jobtypes can produce block2cell and cell2cell and 
                // (B) we don't generate an explicit instruction for it (the info 
                // is conveyed through OutputInfo.
                } else if (dop.getInput().get(0).requiresReblock() && dop.getInput().get(0).getParent().size() == 1) {
                    // if a reblock is feeding into this, then use it if this is
                    // the only parent, otherwise new Reblock
                    dop.getInput().get(0).setOutputBlocksizes(dop.getRowsInBlock(), dop.getColsInBlock());
                } else {
                    // insert reblock after the hop
                    dop.setRequiresReblock(true);
                    dop.setOutputBlocksizes(blocksize, blocksize);
                }
            } else if (dop.getDataOpType() == DataOp.DataOpTypes.TRANSIENTWRITE || dop.getDataOpType() == DataOp.DataOpTypes.TRANSIENTREAD) {
                if (DMLScript.rtplatform == RUNTIME_PLATFORM.SINGLE_NODE) {
                    // simply copy the values from its input
                    dop.setRowsInBlock(hop.getInput().get(0).getRowsInBlock());
                    dop.setColsInBlock(hop.getInput().get(0).getColsInBlock());
                } else {
                    // by default, all transient reads and writes are in blocked format
                    dop.setRowsInBlock(blocksize);
                    dop.setColsInBlock(blocksize);
                }
            } else {
                throw new HopsException(hop.printErrorLocation() + "unexpected non-scalar Data HOP in reblock.\n");
            }
        }
    } else //TODO remove once transform rebased to frames
    if ((hop instanceof ParameterizedBuiltinOp && ((ParameterizedBuiltinOp) hop).getOp() == ParamBuiltinOp.TRANSFORM)) {
        // check if there exists a non-csv-write output. If yes, add reblock
        boolean rblk = false;
        for (Hop out : hop.getParent()) {
            if (!(out instanceof DataOp && ((DataOp) out).getDataOpType() == DataOpTypes.PERSISTENTWRITE && ((DataOp) out).getInputFormatType() == FileFormatTypes.CSV)) {
                rblk = true;
                break;
            }
        }
        if (rblk) {
            hop.setRequiresReblock(true);
            hop.setOutputBlocksizes(blocksize, blocksize);
        }
    } else //NO DATAOP 
    {
        if (hop.requiresReblock()) {
            hop.setRowsInBlock(blocksize);
            hop.setColsInBlock(blocksize);
        } else // Constraint C2:
        if (hop.getDataType() == DataType.SCALAR) {
            hop.setRowsInBlock(-1);
            hop.setColsInBlock(-1);
        } else // Constraint C3:
        {
            if (!canReblock) {
                hop.setRowsInBlock(-1);
                hop.setColsInBlock(-1);
            } else {
                hop.setRowsInBlock(blocksize);
                hop.setColsInBlock(blocksize);
                // Reblock properties need to be set for each output.
                if (hop instanceof FunctionOp) {
                    FunctionOp fop = (FunctionOp) hop;
                    if (fop.getOutputs() != null) {
                        for (Hop out : fop.getOutputs()) {
                            out.setRowsInBlock(blocksize);
                            out.setColsInBlock(blocksize);
                        }
                    }
                }
            }
            // if any input is not blocked then the output of current Hop should not be blocked
            for (Hop h : hop.getInput()) {
                if (h.getDataType() == DataType.MATRIX && h.getRowsInBlock() == -1 && h.getColsInBlock() == -1) {
                    hop.setRowsInBlock(-1);
                    hop.setColsInBlock(-1);
                    break;
                }
            }
        }
    }
    hop.setVisited();
}