Package jline.solvers.fluid

Class FluidOverload

java.lang.Object

jline.solvers.fluid.FluidOverload

public final class FluidOverload
extends Object

Reports an overloaded open station as non-stationary. Twin of matlab/src/solvers/FLD/fluid_mark_overloaded.m.

A steady-state fluid solve integrates the drift to a finite horizon. At an open station whose offered load exceeds its capacity there is no fixed point to reach: the queue grows for as long as the integration runs, so the value at the end of the horizon is a property of the horizon and of the ODE solver's step control, not of the model.

The test is the solve's own flow balance, read after the fact: a finite-server station that is saturated (total utilization within CoarseTol of 1) and at which an OPEN class departs more slowly than it arrives is not stationary. Such an entry gets QLen = RespT = +Infinity, the marker SolverMVA and SolverNC use for an unstable open station, and the system response time of its chain follows. Util and Tput (the saturated departure rate) do not depend on the horizon and are left as computed. Reading the balance rather than the traffic equations is deliberate: a station downstream of a saturated one is fed at the saturated station's departure rate, and may well be stable.

Method Summary

Modifier and Type	Method	Description
static boolean	mark(NetworkStruct sn, Matrix QN, Matrix UN, Matrix RN, Matrix TN, Matrix AN, Matrix CN)	Marks the overloaded open station-class entries of QN, RN and CN in place.

Methods inherited from class java.lang.Object

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

Method Details

mark

public static boolean mark(NetworkStruct sn,
 Matrix QN,
 Matrix UN,
 Matrix RN,
 Matrix TN,
 Matrix AN,
 Matrix CN)

Marks the overloaded open station-class entries of QN, RN and CN in place.

Returns:

true when at least one entry was marked