| /* |
| * 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.ignite.ml.environment.parallelism; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.apache.ignite.ml.math.functions.IgniteFunction; |
| import org.apache.ignite.ml.math.functions.IgniteSupplier; |
| |
| /** |
| * Specifies the behaviour of processes in ML-algorithms that can may be parallelized such as parallel learning in |
| * bagging, learning submodels for One-vs-All model, Cross-Validation etc. |
| */ |
| public interface ParallelismStrategy { |
| /** |
| * The type of parallelism. |
| */ |
| public enum Type { |
| /** No parallelism. */ |
| NO_PARALLELISM, |
| |
| /** On default pool. */ |
| ON_DEFAULT_POOL |
| } |
| |
| /** |
| * Submit task. |
| * |
| * @param task Task. |
| * |
| * @return The result of submit operation. |
| */ |
| public <T> Promise<T> submit(IgniteSupplier<T> task); |
| |
| /** Returns default parallelism. */ |
| public int getParallelism(); |
| |
| /** |
| * Submit the list of tasks. |
| * |
| * @param tasks The task list. |
| * @param <T> The type of return value. |
| * @return The results of the submitted operations list. |
| */ |
| public default <T> List<Promise<T>> submit(List<IgniteSupplier<T>> tasks) { |
| List<Promise<T>> results = new ArrayList<>(); |
| for (IgniteSupplier<T> task : tasks) |
| results.add(submit(task)); |
| return results; |
| } |
| |
| /** On default pool. */ |
| public static IgniteFunction<Integer, Type> ON_DEFAULT_POOL = part -> Type.ON_DEFAULT_POOL; |
| |
| /** No parallelism. */ |
| public static IgniteFunction<Integer, Type> NO_PARALLELISM = part -> Type.NO_PARALLELISM; |
| } |