Java example source code file (ClusterSetup.java)

This example Java source code file (ClusterSetup.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

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Java - Java tags/keywords

amazon, clustersetup, cmdlineexception, cmdlineparser, ec2boxcreator, exception, executorservice, hostprovisioner, logger, number, option, override, string, threading, threads, unable, util

The ClusterSetup.java Java example source code

/*
 *
 *  * Copyright 2015 Skymind,Inc.
 *  *
 *  *    Licensed 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.deeplearning4j.aws.ec2.provision;

import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;


import com.amazonaws.regions.Regions;
import org.deeplearning4j.aws.ec2.Ec2BoxCreator;
import org.kohsuke.args4j.CmdLineException;
import org.kohsuke.args4j.CmdLineParser;
import org.kohsuke.args4j.Option;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Sets up a DL4J cluster
 * @author Adam Gibson
 *
 */
public class ClusterSetup {

	@Option(name = "-w",usage = "Number of workers")
	private int numWorkers = 1;
	@Option(name = "-ami",usage = "Amazon machine image: default, amazon linux (only works with RHEL right now")
	private String ami = "ami-fb8e9292";
	@Option(name = "-s",usage = "size of instance: default m1.medium")
	private String size = "m3.xlarge";
	@Option(name = "-sg",usage = "security group, this needs to be applyTransformToDestination")
	private String securityGroupName;
	@Option(name = "-kp",usage = "key pair name, also needs to be applyTransformToDestination.")
	private String keyPairName;
	@Option(name = "-kpath",usage = "path to private key - needs to be applyTransformToDestination, this is used to login to amazon.")
	private String pathToPrivateKey;
    @Option(name = "-wscript", usage = "path to worker script to run, this will allow customization of dependencies")
	private String workerSetupScriptPath;
	@Option(name = "-mscript", usage = "path to master script to run this will allow customization of the dependencies")
	private String masterSetupScriptPath;
    @Option(name = "-region",usage = "specify a region")
    private String region = Regions.US_EAST_1.getName();

    private ExecutorService as;

	private static final Logger log = LoggerFactory.getLogger(ClusterSetup.class);


	public ClusterSetup(String[] args) {
		CmdLineParser parser = new CmdLineParser(this);
		try {
			parser.parseArgument(args);
		} catch (CmdLineException e) {
			parser.printUsage(System.err);
			log.error("Unable to parse args",e);
		}


	}

	public void exec() {
		//master + workers
		Ec2BoxCreator boxCreator = new Ec2BoxCreator(ami,numWorkers,size,securityGroupName,keyPairName);
        boxCreator.setRegion(Regions.fromName(region));
		boxCreator.create();
		boxCreator.blockTillAllRunning();
		List<String> hosts = boxCreator.getHosts();
		//provisionMaster(hosts.getFromOrigin(0));
		provisionWorkers(hosts);


	}






	private void provisionWorkers(List<String> workers) {
		as = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
		for(final String workerHost : workers) {
			try {
              as.submit(new Runnable() {
				  @Override
				  public void run() {
					  HostProvisioner uploader = new HostProvisioner(workerHost, "ec2-user");
					  try {
						  uploader.addKeyFile(pathToPrivateKey);
						  //uploader.runRemoteCommand("sudo hostname " + workerHost);
						  uploader.uploadAndRun(workerSetupScriptPath, "");
					  } catch (Exception e) {
						  e.printStackTrace();
					  }

				  }
			  });

			}catch(Exception e) {
				log.error("Error ",e);
			}
		}
	}


	/**
	 * @param args
	 */
	public static void main(String[] args) {
		new ClusterSetup(args).exec();
	}

}