Package jline.solvers.fluid.analyzers

Class MFQAnalyzer

java.lang.Object

jline.solvers.fluid.analyzers.MFQAnalyzer

All Implemented Interfaces:

FluidAnalyzer

public class MFQAnalyzer
extends Object
implements FluidAnalyzer

MFQ (Markovian Fluid Queue) analyzer for single-queue open systems.

Work flows in at the rate of the current arrival phase and drains at the rate of the current service phase. The fluid moments are exact, but approximate the discrete queue unless arrivals and service are exponential (H2/M/1, SCV 64, rho=0.5: 7.16 against the exact 10.16).

Constructor Summary

Constructors

Constructor	Description
MFQAnalyzer()

Method Summary

Modifier and Type	Method	Description
void	analyze(NetworkStruct sn, SolverOptions options, SolverResult result)
Matrix	getXVecIt()
static String	mfqNotApplicableReason(NetworkStruct sn)	The reason MFQ cannot run on this model, or null when it can.

Methods inherited from class java.lang.Object

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

Constructor Details

MFQAnalyzer

public MFQAnalyzer()

Method Details

analyze

public void analyze(NetworkStruct sn,
 SolverOptions options,
 SolverResult result)

Specified by:

analyze in interface FluidAnalyzer

getXVecIt

public Matrix getXVecIt()

Specified by:

getXVecIt in interface FluidAnalyzer

mfqNotApplicableReason

public static String mfqNotApplicableReason(NetworkStruct sn)

The reason MFQ cannot run on this model, or null when it can. MFQ IS A SINGLE-QUEUE METHOD AND FALLS BACK: `solver_fluid_analyzer.m` warns "MFQ not applicable: ... Falling back to matrix method" and re-enters `solver_fluid_matrix`. The decision has to be taken by the CALLER, before the mfq branch of runAnalyzer diverts around the state-space preparation the matrix method reads (options.init_sol above all), which is why this is exposed rather than handled inside analyze(jline.lang.NetworkStruct, jline.solvers.SolverOptions, jline.solvers.SolverResult).

Parameters:

sn - the model

Returns:

the topology error, or null when MFQ applies