hu.mta.sztaki.lpds.cloud.simulator.util
Class PowerTransitionGenerator

java.lang.Object
  hu.mta.sztaki.lpds.cloud.simulator.util.PowerTransitionGenerator

public class PowerTransitionGenerator
extends Object

This helper class provides a simple way to generate the necessary power transition functions for physical machine behavior. WARNING: this is not intended to be used for realistic modeling of physical machines but allows a simplified creation of physical machines for which the power model is not expected to be used.

Author:

"Gabor Kecskemeti, Laboratory of Parallel and Distributed Systems, MTA SZTAKI (c) 2014"

Constructor Summary

PowerTransitionGenerator()

Method Summary

static EnumMap<PhysicalMachine.PowerStateKind,EnumMap<PhysicalMachine.State,PowerState>>

generateTransitions(double minpower, double idlepower, double maxpower, double diskDivider, double netDivider) The generator function that derives the power transition and power state definitions from a few simple parameters.

Methods inherited from class java.lang.Object

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

Constructor Detail

PowerTransitionGenerator

public PowerTransitionGenerator()

Method Detail

generateTransitions

public static EnumMap<PhysicalMachine.PowerStateKind,EnumMap<PhysicalMachine.State,PowerState>> generateTransitions(double minpower,
                                                                                                                    double idlepower,
                                                                                                                    double maxpower,
                                                                                                                    double diskDivider,
                                                                                                                    double netDivider)
                                                                                                             throws SecurityException,
                                                                                                                    InstantiationException,
                                                                                                                    IllegalAccessException,
                                                                                                                    NoSuchFieldException

The generator function that derives the power transition and power state definitions from a few simple parameters. The generated power states will all be based on the linear consumption model (except during power off state).

Parameters:

minpower - the power (in W) to be drawn by the PM while it is completely switched off (but plugged into the wall socket)

idlepower - the power (in W) to be drawn by the PM's CPU while it is running but not doing any useful tasks.

maxpower - the power (in W) to be drawn by the PM's CPU if it's CPU is completely utilized

diskDivider - the ratio of the PM's disk power draw values compared to the it's CPU's power draw values

netDivider - the ratio of the PM's network power draw values compared to the it's CPU's power draw values

Returns:

a power state setup useful for instantiating PMs

Throws:

SecurityException - if the power state to be created failed to instantiate properly

InstantiationException - if the power state to be created failed to instantiate properly

IllegalAccessException - if the power state to be created failed to instantiate properly

NoSuchFieldException - if the power state to be created failed to instantiate properly