Package org.cloudsimplus.heuristics

Class CloudletToVmMappingSimulatedAnnealing

java.lang.Object

org.cloudsimplus.heuristics.HeuristicAbstract<S>

org.cloudsimplus.heuristics.SimulatedAnnealingAbstract<CloudletToVmMappingSolution>

org.cloudsimplus.heuristics.CloudletToVmMappingSimulatedAnnealing

All Implemented Interfaces:

CloudletToVmMappingHeuristic, Heuristic<CloudletToVmMappingSolution>

public class CloudletToVmMappingSimulatedAnnealing
extends SimulatedAnnealingAbstract<CloudletToVmMappingSolution>
implements CloudletToVmMappingHeuristic

A heuristic that uses Simulated Annealing to find a sub-optimal mapping among a set of Cloudlets and VMs in order to reduce the number of idle or overloaded Vm Pe's.

Since:

CloudSim Plus 1.0

Author:

Manoel Campos da Silva Filho

Field Summary

Fields inherited from interface org.cloudsimplus.heuristics.CloudletToVmMappingHeuristic

NULL

Fields inherited from interface org.cloudsimplus.heuristics.Heuristic

LOGGER, NULL

Constructor Summary

Constructors

Constructor	Description
CloudletToVmMappingSimulatedAnnealing(double initialTemperature, ContinuousDistribution random)	Creates a new Simulated Annealing Heuristic for solving Cloudlets to Vm's mapping.

Method Summary

Modifier and Type	Method	Description
CloudletToVmMappingSolution	createNeighbor(CloudletToVmMappingSolution source)	Creates a neighbor solution cloning a source one and randomly changing some of its values.
List<Cloudlet>	getCloudletList()
CloudletToVmMappingSolution	getInitialSolution()	Gets the initial solution that the heuristic will start from in order to try to improve it.
List<Vm>	getVmList()
void	setCloudletList(List<Cloudlet> cloudletList)	Sets the list of Cloudlets to be mapped to available Vm's.
void	setVmList(List<Vm> vmList)	Sets the list of available VMs to host Cloudlets.

Methods inherited from class org.cloudsimplus.heuristics.SimulatedAnnealingAbstract

getAcceptanceProbability, getColdTemperature, getCoolingRate, getCurrentTemperature, isToStopSearch, setColdTemperature, setCoolingRate, setCurrentTemperature, updateSystemState

Methods inherited from class org.cloudsimplus.heuristics.HeuristicAbstract

getBestSolutionSoFar, getNeighborSolution, getRandom, getRandomValue, getSearchesByIteration, getSolveTime, setBestSolutionSoFar, setNeighborSolution, setSearchesByIteration, setSolveTime, solve

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.cloudsimplus.heuristics.Heuristic

getAcceptanceProbability, getBestSolutionSoFar, getNeighborSolution, getRandomValue, getSearchesByIteration, getSolveTime, isToStopSearch, setSearchesByIteration, solve

Constructor Details

CloudletToVmMappingSimulatedAnnealing

public CloudletToVmMappingSimulatedAnnealing(double initialTemperature,
 ContinuousDistribution random)

Creates a new Simulated Annealing Heuristic for solving Cloudlets to Vm's mapping.

Parameters:

initialTemperature - the system initial temperature

random - a random number generator

See Also:

• SimulatedAnnealingAbstract.setColdTemperature(double)
• SimulatedAnnealingAbstract.setCoolingRate(double)

Method Details

getInitialSolution

public CloudletToVmMappingSolution getInitialSolution()

Description copied from interface: Heuristic

Gets the initial solution that the heuristic will start from in order to try to improve it. If not initial solution was generated yet, one should be randomly generated.

Specified by:

getInitialSolution in interface Heuristic<CloudletToVmMappingSolution>

Returns:

the initial randomly generated solution

getVmList

public List<Vm> getVmList()

Specified by:

getVmList in interface CloudletToVmMappingHeuristic

Returns:

the list of available Vm's to host Cloudlets.

setVmList

public void setVmList(List<Vm> vmList)

Description copied from interface: CloudletToVmMappingHeuristic

Sets the list of available VMs to host Cloudlets.

Specified by:

setVmList in interface CloudletToVmMappingHeuristic

Parameters:

vmList - the list of VMs to set

getCloudletList

public List<Cloudlet> getCloudletList()

Specified by:

getCloudletList in interface CloudletToVmMappingHeuristic

Returns:

the list of cloudlets to be mapped to available Vm's.

setCloudletList

public void setCloudletList(List<Cloudlet> cloudletList)

Description copied from interface: CloudletToVmMappingHeuristic

Sets the list of Cloudlets to be mapped to available Vm's.

Specified by:

setCloudletList in interface CloudletToVmMappingHeuristic

Parameters:

cloudletList - the list of Cloudlets to set

createNeighbor

public CloudletToVmMappingSolution createNeighbor(CloudletToVmMappingSolution source)

Description copied from interface: Heuristic

Creates a neighbor solution cloning a source one and randomly changing some of its values. A neighbor solution is one that is close to the current solution and has just little changes.

Specified by:

createNeighbor in interface Heuristic<CloudletToVmMappingSolution>

Parameters:

source - the source to create a neighbor solution

Returns:

the cloned and randomly changed solution that represents a neighbor solution