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GridSim安装报告 清华大学 朱穗晖
GridSim是一个在Windows和Linux的平台上都可以运行的网格模拟器。这个模拟器是用Java编写的所以具有跨平台特性。GridSim可以进行网格调度算法的模拟、，可以通过提供的method来编写模拟文件，从而完成模拟的过程。 1 与其他模拟器的比较 在网格领域几个比较著名的模拟器有MicroGrid，SimGrid，和Bricks。与它们相比，GridSim对于人们来说是比较陌生的。下面先来简单总结一下我这段时间根据阅读的材料，得出对这几个模拟器的一些总结。 （1） MicroGrid 这个模拟器是最有名的模拟器，关于它的详细资料可以参阅刘鹏的网格信息中转站www.chinagrid.net，上面有比较多的人研究这个。在这个网格中转站上有一个关于模拟器的虚拟学习组织，经过这几天的阅读获益匪浅。 从模拟器的意义上来说，MicroGrid是这几个模拟器中比较最接近真实的模拟器。它基于Linux，建立在Globus平台上，所有的程序都模拟在Globus的基础上运行。这个模拟器现在有比较多研究算法的人采用。 不过它有一个很致命的缺点，就是它要基于Globus，而且现在还没有支持Globus3的版本。只支持到Globus2.2，这也是我不选择这个模拟器的原因。 （2） SimGrid 这个模拟器也是一个工具包，准确来说是一个API包。SimGrid也属于比较有名的一个工具包。它也是基于Linux平台，使用C来开发模拟器。这是我觉得最理想的一个模拟器，无奈想尽办法也装不上。如果能够装上，也希望能够在这个平台上跑模拟程序。 2 GridSim简介 很多人将GridSim与SimGrid混淆起来。其实SimGrid完全是Linux下面用C开发的。而GridSim完全是用Java开发的，因此具有跨平台特性。我选择Windows作为我的测试平台。 GridSim也是一套API的工具包，它也可以产生资源如处理器，也可以产生计算任务。这些都由API来完成。使用J2SDK1.42编译。然后输出结果到文件中。 3 GridSim安装步骤 下面以Window版本为例说明GridSim的安装。 （1）安装准备工作 从网站http://www.cs.mu./~raj/gridsim/ 上面下载gridsimtoolkit-2.2（现在的最新版本）。下来是一个Zip包。 首先确认机器上是否有J2SDK。可以从java.sun.com上下载J2SDK的最新版本。一般是exe文件，点击装上即可。 设置Java环境变量的时候要非常注意。下面是在Windows XP上的设置方法。 在我的电脑—属性—高级—环境变量。双击Path，加入
点击“新建”，添加classpath项，值如下：
点击“确定”完成设置。 （2）GridSim安装 点击解压后的安装文件。解压文件夹结构如下： gridsimtoolkit-2.2/ index.html -- This file classes/ -- The .class files doc/ -- API Documentation eduni/ gridbroker/ gridsim/ visualmodeler/ examples/ -- Examples, see README.txt for details jars/ -- jar archives source/ -- The Java source code gridbroker/*.java gridsim/*.java visualmodeler/*.java （3） 编译与运行设置 这一部分在帮助文档上没有，但是为了编译方便我自己尝试加入如下内容。 在Classpath加入C:\gridsimtoolkit-2.2\jars\all.jar 这样可以在任意目录编译运行Gridsim的Java程序了。 （4） 测试运行结果 测试文件是软件包中的Example1 该文件显示了如何使用API来讲三台机器初始化为一个网路资源/ 测试文件如下 Example1.java /* * Author: Anthony Sulistio * Date: April 2003 * Description: A simple program to demonstrate of how to use GridSim package. * This example shows how to create one Grid resource with three * machines. * * NOTE: The values used from this example are taken from the GridSim paper. * http://www./gridsim/ * $Id: Example1.java,v 1.5 2003/12/14 05:35:24 anthony Exp $ */ import java.util.*; import gridsim.*; /** * This class creates one Grid resource with three machines. Before creating * any of GridSim entities, you should remember to call * <tt>GridSim.Init()</tt>. */ class Example1 { /** * Main function to run this example */ public static void main(String[] args) { System.out.println("Starting example of how to create one Grid " + "resource"); try { // First step: Initialize the GridSim package. It should be called // before creating any entities. We can‘t run GridResource // entity without initializing GridSim first. We will get run-time // exception error. int num_user = 0; // number of users need to be created Calendar calendar = Calendar.getInstance(); boolean trace_flag = true; // mean trace GridSim events/activities // list of files or processing names to be excluded from any //statistical measures String[] exclude_from_file = { "" }; String[] exclude_from_processing = { "" }; // the name of a report file to be written. We don‘t want to write // anything here. See other examples of using the // ReportWriter class String report_name = null; // Initialize the GridSim package System.out.println("Initializing GridSim package"); GridSim.init(num_user, calendar, trace_flag, exclude_from_file, exclude_from_processing, report_name); // Second step: Create one Grid resource GridResource gridResource = createGridResource(); System.out.println("Finish the 1st example"); } catch (Exception e) { e.printStackTrace(); System.out.println("Unwanted error happens"); } } /** * Creates one Grid resource. A Grid resource contains one or more * Machines. Similarly, a Machine contains one or more PEs (Processing * Elements or CPUs). * <p> * In this simple example, we are simulating one Grid resource with three * Machines that contains one or more PEs. * @return a GridResource object */ private static GridResource createGridResource() { System.out.println("Starting to create one Grid resource with " + "3 Machines ..."); // Here are the steps needed to create a Grid resource: // 1. We need to create an object of MachineList to store one or more // Machines MachineList mList = new MachineList(); System.out.println("Creates a Machine list"); // 2. A Machine contains one or more PEs or CPUs. Therefore, should // create an object of PEList to store these PEs before creating // a Machine. PEList peList1 = new PEList(); System.out.println("Creates a PE list for the 1st Machine"); // 3. Create PEs and add these into an object of PEList. // In this example, we are using a resource from // hpc420.hpcc.jp, AIST, // Note: these data are taken the from GridSim paper, page 25. // In this example, all PEs has the same MIPS (Millions // Instruction Per Second) Rating for a Machine. int MIPSRating = 377; peList1.add( new PE(0, MIPSRating) ); // store PE id and MIPS Rating peList1.add( new PE(1, MIPSRating) ); peList1.add( new PE(2, MIPSRating) ); peList1.add( new PE(3, MIPSRating) ); System.out.println("Creates 4 PEs with same MIPS Rating and put " + "them into the PE list"); // 4. Create one Machine with its id and list of PEs or CPUs mList.add( new Machine(0, peList1) ); // First Machine System.out.println("Creates the 1st Machine that has 4 PEs and " + "stores it into the Machine list"); // 5. Repeat the process from 2 if we want to create more Machines // In this example, the AIST in // MIPS Rating but different PEs. // NOTE: if you only want to create one Machine for one Grid resource, // then you could skip this step. PEList peList2 = new PEList(); System.out.println(); System.out.println("Creates a PE list for the 2nd Machine"); peList2.add( new PE(0, MIPSRating) ); peList2.add( new PE(1, MIPSRating) ); peList2.add( new PE(2, MIPSRating) ); peList2.add( new PE(3, MIPSRating) ); System.out.println("Creates 4 PEs with same MIPS Rating and put " + "them into the PE list"); mList.add( new Machine(1, peList2) ); // Second Machine System.out.println("Creates the 2nd Machine that has 4 PEs and " + "stores it into the Machine list"); PEList peList3 = new PEList(); System.out.println(); System.out.println("Creates a PE list for the 3rd Machine"); peList3.add( new PE(0, MIPSRating) ); peList3.add( new PE(1, MIPSRating) ); System.out.println("Creates 2 PEs with same MIPS Rating and put " + "them into the PE list"); mList.add( new Machine(2, peList3) ); // Third Machine System.out.println("Creates the 3rd Machine that has 2 PEs and " + "stores it into the Machine list"); // 6. Create a ResourceCharacteristics object that stores the // properties of a Grid resource: architecture, OS, list of // Machines, allocation policy: time- or space-shared, time zone // and its price (G$/PE time unit). String arch = "Sun Ultra"; // system architecture |
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