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CloudSim Architecture and Installation: What You Need to Know Before Using CloudSim (PDF 21)


Cloud computing is a paradigm that offers cheap, scalable and ubiquitous computing over distributed networks. It enables users to access various services and resources on demand without worrying about the underlying infrastructure and management. However, developing and testing new policies and solutions for cloud computing is not an easy task, as it requires real hardware and software platforms that are often expensive and complex.

cloudsim tutorial for beginners pdf 21

That's where cloud simulation tools come in handy. They allow researchers and developers to model and simulate different aspects of cloud computing, such as resource provisioning, scheduling, load balancing, network topology, power consumption, etc. without requiring real hardware or infrastructure. They also enable users to evaluate the performance, scalability, reliability and cost-effectiveness of their proposed solutions under various scenarios and conditions.

One of the most popular and widely used cloud simulation tools is CloudSim. CloudSim is an open-source framework that provides a Java-based platform for modeling and simulating cloud computing systems. It supports both system and behavior modeling of cloud components such as data centers, hosts, virtual machines (VMs), applications, etc. It also provides a flexible and extensible architecture that allows users to create custom scenarios and policies according to their needs.

In this article, we will provide a comprehensive tutorial on how to use CloudSim for beginners. We will cover the following topics:

  • CloudSim architecture

  • CloudSim installation

  • CloudSim examples

  • CloudSim extensions and tools

By the end of this article, you will have a clear understanding of what CloudSim is, how it works, how to install it, how to run some basic examples, and how to use some additional tools and extensions that enhance its functionality. You will also learn some tips and tricks on how to use CloudSim effectively for your own research or development projects.

CloudSim Architecture

Before we dive into the installation and usage of CloudSim, let's first take a look at its architecture and components. CloudSim is based on a layered design that consists of four main layers:

  • CloudSim Core

  • User Code

  • Basic Entities

  • Supporting Entities

The following figure shows the CloudSim architecture and its layers:

![CloudSim Architecture]( The CloudSim Core layer provides the basic functionality and services for cloud simulation, such as discrete event simulation engine, entity management, time management, event queue management, etc. It also defines some common interfaces and abstract classes that are used by the other layers.

The User Code layer is where the users write their own simulation scenarios and policies using the CloudSim API. This layer interacts with the CloudSim Core layer to create and manage the simulation entities and events.

The Basic Entities layer defines some essential entities that are common to most cloud simulations, such as Datacenter, DatacenterBroker, Host, Vm, Cloudlet, etc. These entities represent the physical and virtual components of a cloud system, such as data centers, hosts, VMs, applications, etc. They also encapsulate the characteristics and behaviors of these components, such as processing capacity, memory size, bandwidth, scheduling policy, etc.

The Supporting Entities layer defines some additional entities that support the simulation of specific aspects of cloud computing, such as network topology, power consumption, cost model, etc. These entities are optional and can be used or extended by the users according to their requirements.

CloudSim Installation


To install and run CloudSim, you need to have the following software and tools on your system:

  • Java Development Kit (JDK) version 8 or higher. You can download it from here.

  • Eclipse IDE for Java Developers. You can download it from here.

  • CloudSim Toolkit version 3.0.3 or higher. You can download it from here.

Make sure that you have installed JDK and Eclipse properly and set the environment variables accordingly. You can check if Java is installed correctly by typing java -version in a terminal or command prompt. You should see something like this:

```bash java version "1.8.0_301" Java(TM) SE Runtime Environment (build 1.8.0_301-b09) Java HotSpot(TM) 64-Bit Server VM (build 25.301-b09, mixed mode) ``` Downloading and Setting Up CloudSim

Once you have downloaded the CloudSim Toolkit zip file from the GitHub repository, you need to extract it to a folder of your choice. You will see a folder named cloudsim-3.0.3 that contains the following subfolders:

  • build: This folder contains the compiled classes and jar files of CloudSim.

  • doc: This folder contains the documentation and javadocs of CloudSim.

  • jars: This folder contains the external libraries and dependencies of CloudSim.

  • modules: This folder contains the source code of CloudSim and its extensions.

  • scripts: This folder contains some scripts for running CloudSim examples.

To use CloudSim in Eclipse, you need to import it as an existing project. Follow these steps:

  • Open Eclipse and select a workspace of your choice.

  • Go to File -> Import -> General -> Existing Projects into Workspace and click Next.

  • Browse to the cloudsim-3.0.3/modules/cloudsim folder and select it as the root directory.

  • You should see a project named cloudsim in the Projects list. Make sure it is checked and click Finish.

  • You should see the cloudsim project in the Package Explorer view of Eclipse.

![Eclipse Import Project]( Congratulations! You have successfully imported CloudSim into Eclipse. You can now explore its source code, run its examples, and create your own simulations 71b2f0854b


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