// End Initialize() in MDSLinearAlgebra
// MaxIndicator = 0 Find Maximum Eigenvalue of Matrix
// MaxIndicator = 1 Find Maximum Eigenvalue of (Maximizr - Matrix)
public static int PowerIterate(Desertwind Solution, int MaxIndicator, double Maximizer,
out double PowerEigenvalue)
{
if (DistributedNewIteratedVector == null)
{
Initialize();
}
Hotsun.UseDiagonalScaling = true;
Hotsun.AddMarquardtQDynamically = false;
// Set up Initial Power Vectors
SetInitialPowerVector(DistributedNewIteratedVector);
double AdotA = SALSABLAS.VectorScalarProduct(DistributedNewIteratedVector, DistributedNewIteratedVector);
int somethingtodo = 0;
int PowerIterationCount = 0;
PowerEigenvalue = -1.0;
while (true)
{
// Iterate over Power Multiplications by Chisq Matrix
// Normalize Current A and move from New to Old
double OldNorm = 1.0 / Math.Sqrt(AdotA);
SALSABLAS.LinearCombineVector(DistributedOldIteratedVector, OldNorm,
DistributedNewIteratedVector, 0.0, DistributedNewIteratedVector);
// Make a Global Vector of DistributedOldIteratedVector
ManxcatCentral.MakeVectorGlobal(DistributedOldIteratedVector, GlobalOldIteratedVector);
// Form Chisq Matrix Product with Old Vector
if (Hotsun.FullSecondDerivative)
{
UserRoutines.GlobalMatrixVectorProduct(DistributedNewIteratedVector, Solution, true,
Hotsun.GlobalParameter, GlobalOldIteratedVector);
}
else
{
UserRoutines.GlobalMatrixVectorProduct(DistributedNewIteratedVector, Solution, false,
Hotsun.GlobalParameter, GlobalOldIteratedVector);
}
// Correct case MaxIndicator = 1
if (MaxIndicator > 0)
{
SALSABLAS.LinearCombineVector(DistributedNewIteratedVector, -1.0, DistributedNewIteratedVector,
Maximizer, DistributedOldIteratedVector);
}
SALSABLAS.LinearCombineVector(DistributedNewIteratedVector, 1.0, DistributedNewIteratedVector,
Hotsun.addonforQcomputation, DistributedOldIteratedVector);
// Form Scalar Products
double NewEigenvalue = SALSABLAS.VectorScalarProduct(DistributedNewIteratedVector,
DistributedOldIteratedVector);
AdotA = SALSABLAS.VectorScalarProduct(DistributedNewIteratedVector, DistributedNewIteratedVector);
++PowerIterationCount;
somethingtodo = -1;
if (SALSAUtility.MPI_Rank == 0)
{
if (PowerIterationCount > 10 && (NewEigenvalue > 0.0))
{
// Arbitary criteria for starting +tests
somethingtodo = 0;
double scaleit = 1.0;
if (MaxIndicator > 0)
{
scaleit = Hotsun.extraprecision;
}
if (Math.Abs(NewEigenvalue - PowerEigenvalue) > PowerEigenvalue * scaleit * Hotsun.eigenvaluechange)
{
++somethingtodo;
}
double delta = AdotA - NewEigenvalue * NewEigenvalue; // (Ax- Eigenvalue*Axold)**2
if (Math.Abs(delta) > NewEigenvalue * NewEigenvalue * scaleit * Hotsun.eigenvectorchange)
{
++somethingtodo;
}
}
}
PowerEigenvalue = NewEigenvalue;
if (SALSAUtility.MPI_Size > 1)
{
SALSAUtility.StartSubTimer(SALSAUtility.MPIBROADCASTTiming);
SALSAUtility.MPI_communicator.Broadcast(ref somethingtodo, 0);
SALSAUtility.StopSubTimer(SALSAUtility.MPIBROADCASTTiming);
}
if (PowerIterationCount >= Hotsun.PowerIterationLimit)
{
somethingtodo = -2;
break;
}
if (somethingtodo == 0)
{
somethingtodo = PowerIterationCount;
break;
}
} // End while over PowerIterationCounts
return(somethingtodo);
}
// End VectorSum(double[] VTotal, double[] V2, double sign, double[] V1)
public static void InitializeParameters(Desertwind Solution, int CountStartingPoints)
{
// Inversion
InvertSolution = false;
if ((CountStartingPoints / 2) * 2 != CountStartingPoints)
{
InvertSolution = true;
}
for (int LocalVectorIndex1 = 0; LocalVectorIndex1 < PointVectorDimension; LocalVectorIndex1++)
{
for (int LocalVectorIndex2 = 0; LocalVectorIndex2 < PointVectorDimension; LocalVectorIndex2++)
{
CurrentCosmicScaling[LocalVectorIndex1, LocalVectorIndex2] = 0.0;
}
CurrentCosmicScaling[LocalVectorIndex1, LocalVectorIndex1] = 1.0;
}
if (InvertSolution)
{
for (int LocalVectorIndex1 = 0; LocalVectorIndex1 < PointVectorDimension; LocalVectorIndex1++)
{
CurrentCosmicScaling[LocalVectorIndex1, LocalVectorIndex1] = -1.0;
}
if (PointVectorDimension == 2)
{
CurrentCosmicScaling[0, 0] = 1.0;
}
}
for (int LocalVectorIndex1 = 0; LocalVectorIndex1 < PointVectorDimension; LocalVectorIndex1++)
{
for (int LocalVectorIndex2 = 0; LocalVectorIndex2 < PointVectorDimension; LocalVectorIndex2++)
{
SavedCosmicScaling[CountStartingPoints][LocalVectorIndex1, LocalVectorIndex2] =
CurrentCosmicScaling[LocalVectorIndex1, LocalVectorIndex2];
}
}
// Scaling
double Scale = FirstScale / SecondScale;
if (ScaleOption == 0)
{
Solution.param[ScalePosition][0] = Scale;
}
else
{
ScaleA1 = 0.5 * (ScaleAlpha + 1.0 / ScaleAlpha);
ScaleA2 = 0.5 * Math.Abs(ScaleAlpha - 1.0 / ScaleAlpha);
Solution.param[ScalePosition][0] = Math.Asin((ScaleA1 - 1.0) / ScaleA2);
ScaleA1 *= Scale;
ScaleA2 *= Scale;
}
var Randobject = new Random();
var RandomAngles = new double[3];
if (SALSAUtility.MPI_Rank == 0)
{
for (int irand = 0; irand < 3; irand++)
{
RandomAngles[irand] = Randobject.NextDouble();
}
}
if (SALSAUtility.MPI_Size > 1)
{
SALSAUtility.StartSubTimer(SALSAUtility.MPIBROADCASTTiming);
SALSAUtility.MPI_communicator.Broadcast(ref RandomAngles, 0);
SALSAUtility.StopSubTimer(SALSAUtility.MPIBROADCASTTiming);
}
// Translation and Rotation
for (int LocalVectorIndex = 0; LocalVectorIndex < PointVectorDimension; LocalVectorIndex++)
{
Solution.param[LocalVectorIndex][0] = FirstMean[LocalVectorIndex] - Scale *
CurrentCosmicScaling[LocalVectorIndex, LocalVectorIndex] *
SecondMean[LocalVectorIndex];
if (PointVectorDimension == 3)
{
Solution.param[LocalVectorIndex + PointVectorDimension][0] = 0.0;
if (CountStartingPoints > 1)
{
Solution.param[LocalVectorIndex + PointVectorDimension][0] = Math.PI *
RandomAngles[LocalVectorIndex];
}
}
}
if (PointVectorDimension == 2)
{
Solution.param[2][0] = 0.0;
if (CountStartingPoints > 1)
{
Solution.param[2][0] = Math.PI * RandomAngles[0];
}
}
}
