net.eduvax.grant.simul
Class TestNode

java.lang.Object
  net.eduvax.grant.core.Node
      net.eduvax.grant.core.LocalNode
          net.eduvax.grant.simul.TestNode

Direct Known Subclasses:

TestRandomNode, TestRoundRobinNode

 class TestNode
extends LocalNode

Evaluation node. This node's goal is to help to evaluate Ant Engine selection. It is intended to use pausing test tasklet and simulates itself cpu load by another pause. This pause delay depends on node virtual capacity and can envolve to simulate real cpu load variations.

Field Summary

(package private) NodeClient	client
private int	loadCost delay to add for each running task.
private int	perfIndice current perf indice.

Fields inherited from class net.eduvax.grant.core.LocalNode

ANT_DEF_DELAY, candidate, STATE_FULL, STATE_HALTED, STATE_RUNNING, STATE_SHUTDOWN, STATE_STARTING, STATES_NAME

Constructor Summary

TestNode(java.lang.String n, int p)
Creates new test node.

Method Summary

protected boolean	checkLoad() Fake load check loading.
int	execReportToClient(ExecReport er)
protected float	getFeedback(ExecRequest er) Do not feedback on schedule.
float	getLoadValue() Compute "real" load for test node.
float	load() computes CPU Load.
protected void	loadNodes(java.util.Hashtable nodeSet, java.io.File nodesFile) Fake rc file loading.
void	setClient(NodeClient nc)
void	setLoadCost(int c) Changes load cost.
void	setPerf(int p) Changes performance indice value.

Methods inherited from class net.eduvax.grant.core.LocalNode

addNode, dissipate, execReport, feedback, fitness, getFeedback, getKnownNodes, getTaskCount, handleEvent, removeNode, sendEvent, setMaxLoad, setSelector, shutdown, status, submitRequest

Methods inherited from class net.eduvax.grant.core.Node

createNode, getFitness, getName, getRCDir, registerNodeFactory, setFitness

Methods inherited from class java.lang.Object

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

Field Detail

perfIndice

private int perfIndice

current perf indice.

loadCost

private int loadCost

delay to add for each running task.

client

NodeClient client

Constructor Detail

TestNode

public TestNode(java.lang.String n,
                int p)

Creates new test node.

Parameters:

n - new node's name

p - virtual cpu load. The node will pause p seconds when computing cpu load (@see #load()) i.e. after each tasklet completion.

Method Detail

setPerf

public void setPerf(int p)

Changes performance indice value. This affects pause length in load() method.

Parameters:

p - new perf indice value.

setLoadCost

public void setLoadCost(int c)

Changes load cost. Delay value added for each running tasklet.

Parameters:

c - delay value in milliseconds.

load

public float load()

computes CPU Load. return virtual cpu load and pause according current simulated load.

Overrides:

load in class LocalNode

Returns:

current load value.

execReportToClient

public int execReportToClient(ExecReport er)

Overrides:

execReportToClient in class LocalNode

setClient

public void setClient(NodeClient nc)

getLoadValue

public float getLoadValue()

Compute "real" load for test node. Used to computed fake delay and te let simulation know at any time, which node is best to compare with tested algorithmes choices.

getFeedback

protected float getFeedback(ExecRequest er)

Do not feedback on schedule.

Overrides:

getFeedback in class LocalNode

Parameters:

er - execute request

Returns:

computed load indice.

loadNodes

protected void loadNodes(java.util.Hashtable nodeSet,
                         java.io.File nodesFile)

Fake rc file loading. Nothing to load with this test node.

Overrides:

loadNodes in class LocalNode

Parameters:

nodeSet - not used here

nodesFile - not used here

checkLoad

protected boolean checkLoad()

Fake load check loading.

Overrides:

checkLoad in class LocalNode

Returns:

true