Class SolverSingleOpen

java.lang.Object

solvers.Solver

solvers.singleSolverAlgorithms.SolverSingleOpen

public class SolverSingleOpen
extends Solver

Solves a single class open model.
To read about the formulas used to solve the system, see:
E.D. Lazowska, J. Zahorjan, G.S. Graham, K. Sevcik
Quantitative System Performance,
Prentice Hall, 1984
NOT USED

Author:

Federico Granata, Stefano Omini

Field Summary

Fields

Modifier and Type	Field	Description
protected double	lambda	arrival rate

Fields inherited from class Solver

DELAY, HOL, LD, LI, name, PRS, queueLen, residenceTime, servTime, stations, throughput, totRespTime, totThroughput, totUser, type, utilization, visits

Constructor Summary

Constructors

Constructor	Description
SolverSingleOpen(double lambda, int stations)	Constructor

Method Summary

Modifier and Type	Method	Description
boolean	hasSufficientProcessingCapacity()	A system is said to have sufficient capacity to process a given load lambda if no service center is saturated as a result of such a load.
void	solve()	Solves the system, after checking that the system contains no LD station (only LI and DELAY stations are allowed).
void	solveLI()	Solves the system with only LI and DELAY stations.

Methods inherited from class Solver

getQueueLen, getQueueLen, getResTime, getResTime, getThroughput, getThroughput, getTotResTime, getTotThroughput, getTotUser, getUtilization, getUtilization, input, printIndices, toString

Methods inherited from class Object

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

Field Details

lambda

protected double lambda

arrival rate

Constructor Details

SolverSingleOpen

public SolverSingleOpen(double lambda,
 int stations)

Constructor

Parameters:

lambda - the arrival rate

stations - the number of stations

Method Details

solve

public void solve()

Solves the system, after checking that the system contains no LD station (only LI and DELAY stations are allowed).
* "input(...)" method must have been called before solving the model!!

Specified by:

solve in class Solver

solveLI

public void solveLI()

Solves the system with only LI and DELAY stations.

hasSufficientProcessingCapacity

public boolean hasSufficientProcessingCapacity()

A system is said to have sufficient capacity to process a given load lambda if no service center is saturated as a result of such a load.
WARNING: This method should be called before solving the system.

Specified by:

hasSufficientProcessingCapacity in class Solver

Returns:

true if sufficient capacity exists for the given workload, false otherwise