protected virtual void ExecutionUnitExchangeCrossover(
SchedulingGenome genome1, SchedulingGenome genome2)
{
int executionUnits = genome1.MachineDescription.ExecutionUnits;
int nCross = (int) (GA.Random.NextGaussian()
* (executionUnits / 6)
+ (executionUnits / 2));
nCross = Math.Min(nCross, executionUnits);
nCross = Math.Max(nCross, 0);
for (int i = 0; i < nCross; i++) {
int exUnit = GA.Random.Next(
genome1.MachineDescription.ExecutionUnits);
for (int j = 0; j < genome1.Schedule.GetLength(0); j++) {
InstructionNode i1 = genome1.Schedule[j, i];
InstructionNode i2 = genome2.Schedule[j, i];
genome1.Schedule[j, i] = i2;
genome2.Schedule[j, i] = i1;
}
}
}
protected virtual int GetViolatedRegisterConstraints(
SchedulingGenome genome)
{
IList[] activeValues = GetActiveValues(genome);
int violatedConstraints = 0;
for (int step = 0; step < activeValues.Length; step++) {
for (int i = 0; i < activeValues[step].Count - 1; i++) {
ValueNode vi = (ValueNode) activeValues[step][i];
Register ri = genome.GetValueInfo(vi).Register;
for (int j = i + 1; j < activeValues[step].Count; j++) {
ValueNode vj = (ValueNode) activeValues[step][j];
Register rj = genome.GetValueInfo(vj).Register;
if (ri == rj)
violatedConstraints += 1;
}
}
}
return violatedConstraints;
}
public virtual void RegisterMutation(SchedulingGenome genome)
{
int nMut = (int) (Math.Abs(GA.Random.NextGaussian())
* (genome.RegisterValues.Count- 1) / 3 + 1);
nMut = Math.Min(nMut, genome.RegisterValues.Count);
for (int i = 0; i < nMut; i++) {
int valIndex =
GA.Random.Next(genome.RegisterValues.Count);
ValueNode val =
(ValueNode) genome.RegisterValues[valIndex];
RegisterSet assignableRegs =
(RegisterSet) genome.InstructionGraph.AssignableRegisters[val];
int regIndex = GA.Random.Next(assignableRegs.Count);
genome.GetValueInfo(val).Register =
(Register) assignableRegs[regIndex];
ValueNode depVal = (ValueNode) genome.CyclicDependencies[val];
if (depVal != null) {
genome.GetValueInfo(depVal).Register =
(Register) assignableRegs[regIndex];
}
}
}
public SchedulingGenomePopulation(
int size, GAScheduler scheduler, SchedulingGenome initGenome,
int nInit)
: base(size)
{
this.scheduler = scheduler;
this.initGenome = initGenome;
this.nInit = nInit;
}
protected virtual void PositionExchangeCrossover(
SchedulingGenome genome1, SchedulingGenome genome2)
{
int nCross = (int) (GA.Random.NextGaussian()
* (genome1.InstructionNodes.Count / 6)
+ (genome1.InstructionNodes.Count / 2));
nCross = Math.Min(nCross, genome1.InstructionNodes.Count);
nCross = Math.Max(nCross, 0);
for (int i = 0; i < nCross; i++) {
int iNodeIndex =
GA.Random.Next(genome1.InstructionNodes.Count);
InstructionNode iNode =
(InstructionNode) genome1.InstructionNodes[iNodeIndex];
int eu = iNode.Instruction.ExecutionUnit;
int t1 = genome1.GetInstructionInfo(iNode).SchedulingStep;
int t2 = genome2.GetInstructionInfo(iNode).SchedulingStep;
genome1.SwapInstructions(t1, t2, eu);
genome2.SwapInstructions(t1, t2, eu);
if (iNode.ResultValue is RegisterValueNode) {
Register r1 = genome1.GetValueInfo(iNode.ResultValue).Register;
Register r2 = genome2.GetValueInfo(iNode.ResultValue).Register;
genome1.GetValueInfo(iNode.ResultValue).Register = r2;
genome2.GetValueInfo(iNode.ResultValue).Register = r1;
ValueNode depVal =
(ValueNode) genome1.CyclicDependencies[iNode.ResultValue];
if (depVal != null) {
Register dr1 = genome1.GetValueInfo(depVal).Register;
Register dr2 = genome2.GetValueInfo(depVal).Register;
genome1.GetValueInfo(depVal).Register = dr2;
genome2.GetValueInfo(depVal).Register = dr1;
}
}
}
}
protected virtual IList[] GetActiveValues(SchedulingGenome genome)
{
IList[] activeValues = new IList[genome.Schedule.GetLength(0)];
for (int i = 0; i < genome.Schedule.GetLength(0); i++) {
activeValues[i] = new ArrayList();
foreach (ValueNode rValue in genome.RegisterValues) {
int production = genome.GetValueInfo(rValue).Production;
int lastUsage = genome.GetValueInfo(rValue).LastUsage;
if (production <= i && i <= lastUsage)
activeValues[i].Add(rValue);
}
}
return activeValues;
}
public virtual void ScheduleCrossSwap(SchedulingGenome genome)
{
int nMut = (int) (Math.Abs(GA.Random.NextGaussian())
* (genome.InstructionNodes.Count - 1) / 3 + 1);
nMut = Math.Min(nMut, genome.InstructionNodes.Count);
for (int i = 0; i < nMut; i++) {
int instrIndex1 =
GA.Random.Next(genome.InstructionNodes.Count);
InstructionNode instr1 = (InstructionNode)
genome.InstructionNodes[instrIndex1];
int instrIndex2 =
GA.Random.Next(genome.InstructionNodes.Count);
InstructionNode instr2 = (InstructionNode)
genome.InstructionNodes[instrIndex2];
IList instrDependencies1 =
(IList) genome.Dependencies[instr1];
IList instrDependencies2 =
(IList) genome.Dependencies[instr2];
int t1 = genome.GetInstructionInfo(instr1).SchedulingStep;
int t2 = genome.GetInstructionInfo(instr2).SchedulingStep;
if ((instrDependencies1.Contains(instr2) && t1 <= t2) ||
(instrDependencies2.Contains(instr1) && t2 <= t1)) {
int eu1 = instr1.Instruction.ExecutionUnit;
int eu2 = instr2.Instruction.ExecutionUnit;
if (eu1 != eu2) {
genome.SwapInstructions(t1, t2, eu1);
genome.SwapInstructions(t1, t2, eu2);
} else {
genome.SwapInstructions(t1, t2, eu1);
}
}
}
}
public virtual void ScheduleCompaction(SchedulingGenome genome)
{
int nMut = (int) (Math.Abs(GA.Random.NextGaussian())
* (genome.InstructionNodes.Count - 1) / 3 + 1);
nMut = Math.Min(nMut, genome.InstructionNodes.Count);
for (int i = 0; i < nMut; i++) {
int iNodeIndex =
GA.Random.Next(genome.InstructionNodes.Count);
InstructionNode iNode =
(InstructionNode) genome.InstructionNodes[iNodeIndex];
int t = genome.GetInstructionInfo(iNode).SchedulingStep;
if (t > 0) {
int exUnit = iNode.Instruction.ExecutionUnit;
if (genome.Schedule[t - 1, exUnit] == null)
genome.SwapInstructions(t, t - 1, exUnit);
}
}
}
public virtual void Initialize(
MachineDescription machineDescription,
InstructionGraph instructionGraph,
SchedulingGenome initGenome)
{
InitializeBase(machineDescription, instructionGraph);
InitializeDependencies();
population = new SchedulingGenomePopulation(
PopulationSize, this, initGenome, 1);
InitializePopulation();
InitializeGA();
bestObjectiveMonitor = new double[MonitoredGenerations];
if (Initialized != null)
Initialized(this);
}
public virtual SchedulingGenome Clone(
IDictionary instructionMap, IDictionary valueMap)
{
SchedulingGenome clone = new SchedulingGenome();
clone.Copy(this, instructionMap, valueMap);
return clone;
}
protected virtual void RegisterCrossover(
SchedulingGenome genome1, SchedulingGenome genome2)
{
int nCross = (int) (GA.Random.NextGaussian()
* (genome1.RegisterValues.Count / 6)
+ (genome1.RegisterValues.Count / 2));
nCross = Math.Min(nCross, genome1.RegisterValues.Count);
nCross = Math.Max(nCross, 0);
for (int i = 0; i < nCross; i++) {
ValueNode val = (ValueNode) genome1.RegisterValues[
GA.Random.Next(genome1.RegisterValues.Count)];
Register r1 = genome1.GetValueInfo(val).Register;
Register r2 = genome2.GetValueInfo(val).Register;
genome1.GetValueInfo(val).Register = r2;
genome2.GetValueInfo(val).Register = r1;
ValueNode depVal = (ValueNode) genome1.CyclicDependencies[val];
if (depVal != null) {
genome1.GetValueInfo(depVal).Register = r2;
genome2.GetValueInfo(depVal).Register = r1;
}
}
}
protected virtual void RelativeOrderCrossoverForExUnit(
SchedulingGenome genome1, SchedulingGenome genome2,
int exUnit, IList instructionsOnExUnit)
{
int nCross = (int) (GA.Random.NextGaussian()
* (instructionsOnExUnit.Count / 6)
+ (instructionsOnExUnit.Count / 2));
nCross = Math.Min(nCross, instructionsOnExUnit.Count);
nCross = Math.Max(nCross, 0);
InstructionNode[] selectedInstr1 = new InstructionNode[nCross];
InstructionNode[] selectedInstr2 = new InstructionNode[nCross];
int[] instrSteps1 = new int[nCross];
int[] instrSteps2 = new int[nCross];
for (int i = 0; i < nCross; i++) {
int selectedInstrIndex =
GA.Random.Next(instructionsOnExUnit.Count);
InstructionNode selectedInstr =
(InstructionNode) instructionsOnExUnit[selectedInstrIndex];
selectedInstr1[i] = selectedInstr;
selectedInstr2[i] = selectedInstr;
instrSteps1[i] = genome1.GetInstructionInfo(
selectedInstr).SchedulingStep;
instrSteps2[i] = genome2.GetInstructionInfo(
selectedInstr).SchedulingStep;
}
Array.Sort(instrSteps1, selectedInstr2);
Array.Sort(instrSteps2, selectedInstr1);
for (int i = 0; i < nCross; i++) {
genome1.ScheduleInstructionForStep(
selectedInstr1[i], instrSteps1[i]);
genome2.ScheduleInstructionForStep(
selectedInstr2[i], instrSteps2[i]);
}
}
protected virtual void RelativeOrderCrossover(
SchedulingGenome genome1, SchedulingGenome genome2)
{
for (int i = 0; i < genome1.MachineDescription.ExecutionUnits; i++) {
IList instructionsOnExUnit = genome1.InstructionsOnExUnit[i];
if (instructionsOnExUnit.Count > 0) {
RelativeOrderCrossoverForExUnit(
genome1, genome2, i, instructionsOnExUnit);
}
}
}
public virtual void Copy(
SchedulingGenome other,
IDictionary instructionMap,
IDictionary valueMap)
{
population = other.population;
scheduler = other.scheduler;
schedule = new InstructionNode[
other.schedule.GetLength(0),
other.schedule.GetLength(1)];
for (int i = 0; i < schedule.GetLength(0); i++) {
for (int j = 0; j < schedule.GetLength(1); j++) {
InstructionNode iNode = other.schedule[i, j];
if (iNode != null) {
schedule[i, j] =
(InstructionNode) instructionMap[other.schedule[i, j]];
} else {
schedule[i, j] = null;
}
}
}
valueInfos = new Hashtable();
foreach (ValueNode vNode in other.ValueInfos.Keys) {
ValueInfo info = new ValueInfo();
ValueInfo otherInfo = other.GetValueInfo(vNode);
info.Register = otherInfo.Register;
info.Production = otherInfo.Production;
info.LastUsage = otherInfo.LastUsage;
valueInfos[valueMap[vNode]] = info;
}
instructionInfos = new Hashtable();
foreach (InstructionNode iNode in other.InstructionInfos.Keys) {
InstructionInfo info = new InstructionInfo();
InstructionInfo otherInfo = other.GetInstructionInfo(iNode);
info.SchedulingStep = otherInfo.SchedulingStep;
instructionInfos[instructionMap[iNode]] = info;
}
isValid = other.isValid;
scheduleLength = other.scheduleLength;
violatedSchedulingConstraints = other.violatedSchedulingConstraints;
violatedRegisterConstraints = other.violatedRegisterConstraints;
generationOfBirth = other.generationOfBirth;
}
public virtual void ScheduleMutation(SchedulingGenome genome)
{
int nMut = (int) (Math.Abs(GA.Random.NextGaussian())
* (genome.InstructionNodes.Count - 1) / 3 + 1);
nMut = Math.Min(nMut, genome.InstructionNodes.Count);
for (int i = 0; i < nMut; i++) {
int iNodeIndex =
GA.Random.Next(genome.InstructionNodes.Count);
InstructionNode iNode =
(InstructionNode) genome.InstructionNodes[iNodeIndex];
int exUnit = iNode.Instruction.ExecutionUnit;
int t1 = genome.GetInstructionInfo(iNode).SchedulingStep;
int t2 = GA.Random.Next(genome.Schedule.GetLength(0));
genome.SwapInstructions(t1, t2, exUnit);
}
}
protected virtual int GetViolatedSchedulingConstraints(
SchedulingGenome genome)
{
int violatedConstraints = 0;
foreach (InstructionNode instr in genome.InstructionNodes) {
int instrStep = genome.GetInstructionInfo(instr).SchedulingStep;
IList instrDependencies = (IList) genome.Dependencies[instr];
foreach (InstructionNode depInstr in instrDependencies) {
int depInstrStep =
genome.GetInstructionInfo(depInstr).SchedulingStep;
if (instrStep <= depInstrStep)
violatedConstraints += 1;
}
/*
foreach (ValueNode depVal in instr.OperandValues) {
if (!depVal.IsInputValue()) {
InstructionNode depInstr =
depVal.ProducingInstruction;
int instrStep =
genome.GetInstructionInfo(instr).SchedulingStep;
int depInstrStep =
genome.GetInstructionInfo(depInstr).SchedulingStep;
if (depInstrStep >= instrStep)
violatedConstraints += depInstrStep - instrStep + 1;
}
}
*/
}
return violatedConstraints;
}
public virtual object Clone()
{
SchedulingGenome clone = new SchedulingGenome();
clone.Copy(this);
return clone;
}