| /* |
| * 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.nemo.compiler.optimizer.pass.compiletime.annotating; |
| |
| import org.apache.nemo.common.ir.IRDAG; |
| import org.apache.nemo.common.ir.edge.IREdge; |
| import org.apache.nemo.common.ir.edge.executionproperty.CommunicationPatternProperty; |
| import org.apache.nemo.common.ir.vertex.executionproperty.ResourcePriorityProperty; |
| import org.apache.nemo.compiler.optimizer.pass.compiletime.Requires; |
| |
| import java.util.List; |
| |
| /** |
| * Place valuable computations on reserved resources, and the rest on transient resources. |
| */ |
| @Annotates(ResourcePriorityProperty.class) |
| @Requires(CommunicationPatternProperty.class) |
| public final class TransientResourcePriorityPass extends AnnotatingPass { |
| /** |
| * Default constructor. |
| */ |
| public TransientResourcePriorityPass() { |
| super(TransientResourcePriorityPass.class); |
| } |
| |
| @Override |
| public IRDAG apply(final IRDAG dag) { |
| dag.topologicalDo(vertex -> { |
| final List<IREdge> inEdges = dag.getIncomingEdgesOf(vertex); |
| if (inEdges.isEmpty()) { |
| vertex.setPropertyPermanently(ResourcePriorityProperty.of(ResourcePriorityProperty.TRANSIENT)); |
| } else { |
| if (hasM2M(inEdges) || allO2OFromReserved(inEdges)) { |
| vertex.setPropertyPermanently(ResourcePriorityProperty.of(ResourcePriorityProperty.RESERVED)); |
| } else { |
| vertex.setPropertyPermanently(ResourcePriorityProperty.of(ResourcePriorityProperty.TRANSIENT)); |
| } |
| } |
| }); |
| return dag; |
| } |
| |
| /** |
| * Checks whether the irEdges have M2M relationship. |
| * |
| * @param irEdges irEdges to check. |
| * @return whether of not any of them has M2M relationship. |
| */ |
| private boolean hasM2M(final List<IREdge> irEdges) { |
| return irEdges.stream().anyMatch(edge -> |
| edge.getPropertyValue(CommunicationPatternProperty.class).get() |
| .equals(CommunicationPatternProperty.Value.Shuffle)); |
| } |
| |
| /** |
| * Checks whether the irEdges are all from reserved containers. |
| * |
| * @param irEdges irEdges to check. |
| * @return whether of not they are from reserved containers. |
| */ |
| private boolean allO2OFromReserved(final List<IREdge> irEdges) { |
| return irEdges.stream() |
| .allMatch(edge -> CommunicationPatternProperty.Value.OneToOne.equals( |
| edge.getPropertyValue(CommunicationPatternProperty.class).get()) |
| && edge.getSrc().getPropertyValue(ResourcePriorityProperty.class).get().equals( |
| ResourcePriorityProperty.RESERVED)); |
| } |
| } |