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This commit is contained in:
Chulwoo Jung
2025-11-26 17:17:22 -05:00
parent 3538faf449
commit 6692425aa2
2 changed files with 5 additions and 3 deletions
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Grid/algorithms/iterative/KrylovSchur.h
+4 -2
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@@ -320,7 +320,7 @@ class KrylovSchur {
RealD shift_=1.;
shift = &shift_;
if (shift)
std::cout << GridLogMessage << "Shift " << approxLambdaMax << std::endl;
std::cout << GridLogMessage << "Shift " << *shift << std::endl;
MaxIter = _maxIter;
Nm = _Nm; Nk = _Nk;
Nstop = _Nstop;
@@ -357,7 +357,7 @@ class KrylovSchur {
for (int m=0;m<Nm;m++) temp(m,m) -= *shift;
Eigen::MatrixXcd RayleighS = temp.inverse();
Eigen::MatrixXcd temp2 = RayleighS*temp;
std::cout << GridLogMessage << "Shift inverse check: shift= "<<*shift <<std::endl;
std::cout << GridLogMessage << "Shift inverse check: shift= "<<*shift<<" "<< temp2 <<std::endl;
ComplexSchurDecomposition schur (Rayleigh, false, ritzFilter);
@@ -367,6 +367,8 @@ class KrylovSchur {
// Rearrange Schur matrix so wanted evals are on top left (like MATLAB's ordschur)
std::cout << GridLogMessage << "Reordering Schur eigenvalues" << std::endl;
schur.schurReorder(Nk);
std::cout << GridLogMessage << "Shifted Schur eigenvalues" << std::endl;
schurS.schurReorder(Nk);
Eigen::MatrixXcd Q = schur.getMatrixQ();
Qt = Q.adjoint(); // TODO should Q be real?
Eigen::MatrixXcd S = schur.getMatrixS();