مثال1کلادسیم

در اینجا مثال 1 کلادسیم شرح داده شده است:

// A simple example showing how to create a datacenter with one host and run one cloudlet on it.

public class CloudSimExample1 {

private static List<Cloudlet> cloudletList; private static List<Vm> vmlist;

public static void main(String[] args) {

// First step: Initialize the CloudSim package. It should be called before creating any entities. int num_user = 1; // number of cloud users Calendar calendar = Calendar.getInstance(); boolean trace_flag = false; // mean trace events

CloudSim.init(num_user, calendar, trace_flag); // Initialize the CloudSim library

// Second step: Create Datacenters // Datacenters are the resource providers in CloudSim. We need at list one of them to run a CloudSim simulation Datacenter datacenter0 = createDatacenter("Datacenter_0");

DatacenterBroker broker = createBroker(); // Third step: Create Broker int brokerId = broker.getId();

vmlist = new ArrayList<Vm>(); // Fourth step: Create one virtual machine

// VM description int vmid = 0; int mips = 1000; long size = 10000; // image size (MB) int ram = 512; // vm memory (MB) long bw = 1000; int pesNumber = 1; // number of cpus String vmm = "Xen"; // VMM name

Vm vm = new Vm(vmid, brokerId, mips, pesNumber, ram, bw, size, vmm, new CloudletSchedulerTimeShared()); // create VM

vmlist.add(vm); // add the VM to the vmList

broker.submitVmList(vmlist); // submit vm list to the broker

cloudletList = new ArrayList<Cloudlet>(); // Fifth step: Create one Cloudlet

// Cloudlet properties int id = 0; long length = 400000; long fileSize = 300; long outputSize = 300; UtilizationModel utilizationModel = new UtilizationModelFull();

Cloudlet cloudlet = new Cloudlet(id, length, pesNumber, fileSize, outputSize, utilizationModel, utilizationModel, utilizationModel); cloudlet.setUserId(brokerId); cloudlet.setVmId(vmid);

cloudletList.add(cloudlet); // add the cloudlet to the list

broker.submitCloudletList(cloudletList); // submit cloudlet list to the broker

CloudSim.startSimulation(); // Sixth step: Starts the simulation CloudSim.stopSimulation();

List<Cloudlet> newList = broker.getCloudletReceivedList(); //Final step: Print results when simulation is over printCloudletList(newList);

datacenter0.printDebts(); // Print the debt of each user to each datacenter }   // Creates the datacenter. private static Datacenter createDatacenter(String name) { List<Host> hostList = new ArrayList<Host>(); // 1. We need to create a list to store our machine

// 2. A Machine contains one or more PEs or CPUs/Cores. In this example, it will have only one core. List<Pe> peList = new ArrayList<Pe>();

int mips = 1000;

// 3. Create PEs and add these into a list. peList.add(new Pe(0, new PeProvisionerSimple(mips))); // need to store Pe id and MIPS Rating

// 4. Create Host with its id and list of PEs and add them to the list of machines int hostId = 0; int ram = 2048; // host memory (MB) long storage = 1000000; // host storage int bw = 10000;

hostList.add( new Host(hostId,new RamProvisionerSimple(ram),new BwProvisionerSimple(bw),storage,peList ,new VmSchedulerTimeShared(peList)) ); // This is our machine

// 5. Create a DatacenterCharacteristics object that stores the properties of a data center: architecture, OS, list of // Machines, allocation policy: time- or space-shared, time zone and its price (G$/Pe time unit). String arch = "x86"; // system architecture String os = "Linux"; // operating system String vmm = "Xen"; double time_zone = 10.0; // time zone this resource located double cost = 3.0; // the cost of using processing in this resource double costPerMem = 0.05; // the cost of using memory in this resource double costPerStorage = 0.001; // the cost of using storage in this resource double costPerBw = 0.0; // the cost of using bw in this resource LinkedList<Storage> storageList = new LinkedList<Storage>(); // we are not adding SAN devices by now

DatacenterCharacteristics characteristics = new DatacenterCharacteristics( arch, os, vmm, hostList, time_zone, cost, costPerMem, costPerStorage, costPerBw);

Datacenter datacenter = null; // 6. Finally, we need to create a PowerDatacenter object. datacenter = new Datacenter(name, characteristics, new VmAllocationPolicySimple(hostList), storageList, 0);

return datacenter; } // Creates the broker. private static DatacenterBroker createBroker() { DatacenterBroker broker = null; broker = new DatacenterBroker("Broker"); return broker; } // Prints the Cloudlet objects. private static void printCloudletList(List<Cloudlet> list) { int size = list.size(); Cloudlet cloudlet; String indent = " "; Log.printLine(); Log.printLine("========== OUTPUT =========="); Log.printLine("Cloudlet ID" + indent + "STATUS" + indent + "Data center ID" + indent + "VM ID" + indent + "Time" + indent+ "Start Time" + indent + "Finish Time"); DecimalFormat dft = new DecimalFormat("###.##"); for (int i = 0; i < size; i++) { cloudlet = list.get(i); Log.print(indent + cloudlet.getCloudletId() + indent + indent); if (cloudlet.getCloudletStatus() == Cloudlet.SUCCESS) { Log.print("SUCCESS"); Log.printLine(indent + indent + cloudlet.getResourceId() + indent + indent + indent + cloudlet.getVmId() + indent + indent + dft.format(cloudlet.getActualCPUTime()) + indent + indent + dft.format(cloudlet.getExecStartTime()) + indent + indent + dft.format(cloudlet.getFinishTime())); } } } }