| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.sysds.lops; |
| |
| import org.apache.sysds.common.Types.DataType; |
| import org.apache.sysds.common.Types.ValueType; |
| import org.apache.sysds.lops.LopProperties.ExecType; |
| import org.apache.sysds.runtime.instructions.InstructionUtils; |
| |
| /** |
| * TODO Additional compiler enhancements: |
| * 1) Partial Shuffle Elimination - Any full or aligned blocks could be directly output from the mappers |
| * to the result index. We only need to shuffle, sort and aggregate partial blocks. However, this requires |
| * piggybacking changes, i.e., (1) operations with multiple result indexes, and (2) multiple operations |
| * with the same result index. |
| * 2) Group Elimination for Append Chains - If we have chains of rappend each intermediate is shuffled and |
| * aggregated. This is unnecessary if all offsets are known in advance. We could directly pack all rappends |
| * in one GMR map-phase followed by one group and subsequent aggregate. However, this requires an n-ary |
| * rappend or group (with multiple inputs). |
| * |
| */ |
| public class AppendG extends Lop |
| { |
| public static final String OPCODE = "gappend"; |
| |
| private boolean _cbind = true; |
| |
| public AppendG(Lop input1, Lop input2, Lop input3, Lop input4, DataType dt, ValueType vt, boolean cbind, ExecType et) |
| { |
| super(Lop.Type.Append, dt, vt); |
| init(input1, input2, input3, input4, dt, vt, et); |
| |
| _cbind = cbind; |
| } |
| |
| public void init(Lop input1, Lop input2, Lop input3, Lop input4, DataType dt, ValueType vt, ExecType et) { |
| addInput(input1); |
| input1.addOutput(this); |
| addInput(input2); |
| input2.addOutput(this); |
| addInput(input3); |
| input3.addOutput(this); |
| addInput(input4); |
| input4.addOutput(this); |
| lps.setProperties( inputs, ExecType.SPARK); |
| } |
| |
| @Override |
| public String toString() { |
| return " AppendG: "; |
| } |
| |
| //called when append executes in SP |
| @Override |
| public String getInstructions(String input_index1, String input_index2, String input_index3, String input_index4, String output_index) { |
| return InstructionUtils.concatOperands( |
| getExecType().name(), |
| OPCODE, |
| getInputs().get(0).prepInputOperand(input_index1), |
| getInputs().get(1).prepInputOperand(input_index2), |
| getInputs().get(2).prepScalarInputOperand(getExecType()), |
| getInputs().get(3).prepScalarInputOperand(getExecType()), |
| prepOutputOperand(output_index), |
| String.valueOf(_cbind)); |
| } |
| } |