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How to Use CloudSim 3.0.3 Simulator: A Beginner's Guide
Cloud computing is a paradigm that offers cheap, scalable and ubiquitous computing over distributed networks. However, testing and evaluating new policies and algorithms in cloud computing can be challenging, as it requires real hardware and infrastructure, or sophisticated simulation tools. CloudSim is one of the most popular and widely used simulation tools for cloud computing research. It allows researchers and developers to model and simulate various aspects of cloud computing, such as data centers, virtual machines, hosts, cloudlets, brokers, load balancing, energy consumption, etc.
However, CloudSim lacks proper documentation and tutorials that would help novice users to understand and implement their policies in CloudSim easily. This article aims to provide a step-by-step guide on how to use CloudSim 3.0.3 simulator for beginners. It will cover the following topics:
How to download and install CloudSim 3.0.3 simulator
How to run a simple example of CloudSim
How to understand the basic classes and components of CloudSim
How to modify the CloudSim toolkit to include your own policies
How to use CloudAnalyst, a graphical user interface for CloudSim
This article is based on the following sources:
CloudSim 3.0.3 Simulator Step by Step by Dalia Abdulkareem Shafiq et al.
On using CloudSim as a Cloud Simulator: The Manual by Suchintan Mishra and Manmath Narayan Sahoo
A tutorial on CloudSim by Habibur Rahman
We hope that this article will help you to get started with CloudSim and explore its potential for your cloud computing research.
How to download and install CloudSim 3.0.3 simulator
To use CloudSim 3.0.3 simulator, you need to have Java Development Kit (JDK) version 1.6 or higher installed on your system. You also need to have an Integrated Development Environment (IDE) such as Eclipse or NetBeans that supports Java programming. You can download CloudSim 3.0.3 simulator from http://www.cloudbus.org/cloudsim/. The simulator is provided as a zip file that contains the source code, libraries, examples and documentation of CloudSim.
To install CloudSim 3.0.3 simulator, you need to unzip the file and import the project into your IDE. You can follow the steps below to import the project into Eclipse:
Open Eclipse and create a new Java project with any name.
Right-click on the project and select Import.
Select General -> Existing Projects into Workspace and click Next.
Select the option Select archive file and browse to the location where you saved the CloudSim 3.0.3 zip file.
Select the project CloudSim and click Finish.
You should see the CloudSim project in your Eclipse workspace with all the source code, libraries and examples.
How to run a simple example of CloudSim
To run a simple example of CloudSim, you can use the class CloudSimExample1.java that is located in the package org.cloudbus.cloudsim.examples. This class demonstrates how to create a simple cloud scenario with one data center, one broker and one cloudlet. A cloudlet is a unit of computation that represents an application or a task that needs to be executed on a virtual machine (VM). A broker is an entity that acts as an intermediary between cloud users and cloud providers. A data center is a collection of physical machines (hosts) that host VMs.
To run the CloudSimExample1.java class, you can follow the steps below:
Right-click on the class and select Run As -> Java Application.
You should see the output of the simulation in the console window of Eclipse.
The output shows the details of the data center, broker, cloudlet and VM creation, as well as the execution time and cost of the cloudlet.
You can modify the parameters of the data center, broker, cloudlet and VM in the code to see how they affect the simulation results. aa16f39245
