public override IFetiPreconditioner CreatePreconditioner(IStructuralModel model,
IStiffnessDistribution stiffnessDistribution, IDofSeparator dofSeparator,
ILagrangeMultipliersEnumerator lagrangeEnumerator, Dictionary <int, IFetiSubdomainMatrixManager> matrixManagers)
{
IReadOnlyList <ISubdomain> subdomains = model.Subdomains;
int[] subdomainIDs = dofSeparator.BoundaryDofIndices.Keys.ToArray();
Dictionary <int, IMappingMatrix> boundaryBooleans = CalcBoundaryPreconditioningBooleanMatrices(
stiffnessDistribution, dofSeparator, lagrangeEnumerator);
foreach (int s in subdomainIDs)
{
if (!subdomains[s].StiffnessModified)
{
continue;
}
Debug.WriteLine($"{typeof(DiagonalDirichletPreconditioner).Name}.{this.GetType().Name}:"
+ $" Extracting boundary/internal submatrices of subdomain {s} for preconditioning");
IFetiSubdomainMatrixManager matrixManager = matrixManagers[s];
int[] boundaryDofs = dofSeparator.BoundaryDofIndices[s];
int[] internalDofs = dofSeparator.InternalDofIndices[s];
matrixManager.ExtractKbb(boundaryDofs);
matrixManager.ExtractKbiKib(boundaryDofs, internalDofs);
matrixManager.ExtractAndInvertKiiDiagonal(internalDofs);
}
return(new DiagonalDirichletPreconditioner(subdomainIDs, matrixManagers, boundaryBooleans));
}
protected Dictionary <int, IMappingMatrix> CalcBoundaryPreconditioningBooleanMatrices(IStiffnessDistribution stiffnessDistribution,
IDofSeparator dofSeparator, ILagrangeMultipliersEnumerator lagrangeEnumerator)
{
int numContinuityEquations = lagrangeEnumerator.NumLagrangeMultipliers;
var matricesBb = new Dictionary <int, SignedBooleanMatrixColMajor>();
foreach (int s in dofSeparator.BoundaryDofIndices.Keys)
{
SignedBooleanMatrixColMajor B = lagrangeEnumerator.BooleanMatrices[s];
SignedBooleanMatrixColMajor Bb = B.GetColumns(dofSeparator.BoundaryDofIndices[s], false);
matricesBb[s] = Bb;
}
Dictionary <int, IMappingMatrix> matricesBpb = stiffnessDistribution.CalcBoundaryPreconditioningSignedBooleanMatrices(
lagrangeEnumerator, matricesBb);
return(matricesBpb);
}
public Dictionary <int, IMappingMatrix> CalcBoundaryPreconditioningSignedBooleanMatrices(
ILagrangeMultipliersEnumerator lagrangeEnumerator,
Dictionary <int, SignedBooleanMatrixColMajor> boundarySignedBooleanMatrices)
{
return(ScalingBooleanMatrixImplicit.CreateBpbOfSubdomains(this, lagrangeEnumerator, boundarySignedBooleanMatrices));
}
public abstract IFetiPreconditioner CreatePreconditioner(IModel model,
IStiffnessDistribution stiffnessDistribution, IDofSeparator dofSeparator,
ILagrangeMultipliersEnumerator lagrangeEnumerator, Dictionary <int, IFetiSubdomainMatrixManager> matrixManagers);