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This commit is contained in:
Peter Boyle 2024-08-27 12:03:28 -04:00
parent 29f6b8a74a
commit 130d7ab077
1 changed files with 28 additions and 28 deletions
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48
Grid/algorithms/iterative/ImplicitlyRestartedBlockLanczosCoarse.h
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@ -279,16 +279,16 @@ public:
Qt = Eigen::MatrixXcd::Identity(Nm,Nm);
diagonalize(eval2,lmd2,lme2,Nu,Nm,Nm,Qt,grid);
_sort.push(eval2,Nm);
Glog << "#Ritz value before shift: "<< std::endl;
// Glog << "#Ritz value before shift: "<< std::endl;
for(int i=0; i<Nm; ++i){
std::cout.precision(13);
std::cout << "[" << std::setw(4)<< std::setiosflags(std::ios_base::right) <<i<<"] ";
std::cout << "Rval = "<<std::setw(20)<< std::setiosflags(std::ios_base::left)<< eval2[i] << std::endl;
// std::cout.precision(13);
// std::cout << "[" << std::setw(4)<< std::setiosflags(std::ios_base::right) <<i<<"] ";
// std::cout << "Rval = "<<std::setw(20)<< std::setiosflags(std::ios_base::left)<< eval2[i] << std::endl;
}
//----------------------------------------------------------------------
if ( Nm>Nk ) {
Glog <<" #Apply shifted QR transformations "<<std::endl;
// Glog <<" #Apply shifted QR transformations "<<std::endl;
//int k2 = Nk+Nu;
int k2 = Nk;
@ -326,7 +326,7 @@ public:
Qt = Eigen::MatrixXcd::Identity(Nm,Nm);
diagonalize(eval2,lmd2,lme2,Nu,Nk,Nm,Qt,grid);
_sort.push(eval2,Nk);
Glog << "#Ritz value after shift: "<< std::endl;
// Glog << "#Ritz value after shift: "<< std::endl;
for(int i=0; i<Nk; ++i){
// std::cout.precision(13);
// std::cout << "[" << std::setw(4)<< std::setiosflags(std::ios_base::right) <<i<<"] ";
@ -644,7 +644,7 @@ private:
// for (int u=0; u<mrhs; ++u) Glog << " out["<<u<<"] = "<<norm2(out[u])<<std::endl;
k_start +=mrhs;
}
Glog << "LinAlg "<< std::endl;
// Glog << "LinAlg "<< std::endl;
if (b>0) {
for (int u=0; u<Nu; ++u) {
@ -678,7 +678,7 @@ private:
}
w_copy[u] = w[u];
}
Glog << "LinAlg done"<< std::endl;
// Glog << "LinAlg done"<< std::endl;
// In block version, the steps 6 and 7 in Lanczos construction is
// replaced by the QR decomposition of new basis block.
@ -691,15 +691,15 @@ private:
}
// re-orthogonalization for numerical stability
Glog << "Gram Schmidt"<< std::endl;
// Glog << "Gram Schmidt"<< std::endl;
orthogonalize(w,Nu,evec,R);
// QR part
for (int u=1; u<Nu; ++u) {
orthogonalize(w[u],w,u);
}
Glog << "Gram Schmidt done "<< std::endl;
// Glog << "Gram Schmidt done "<< std::endl;
Glog << "LinAlg "<< std::endl;
// Glog << "LinAlg "<< std::endl;
for (int u=0; u<Nu; ++u) {
//for (int v=0; v<Nu; ++v) {
for (int v=u; v<Nu; ++v) {
@ -716,7 +716,7 @@ private:
// Glog <<" In block "<< b << "," <<" beta[" << u << "," << k-L << "] = " << lme[u][k] << std::endl;
}
}
Glog << "LinAlg done "<< std::endl;
// Glog << "LinAlg done "<< std::endl;
if (b < Nm/Nu-1) {
for (int u=0; u<Nu; ++u) {
@ -935,7 +935,7 @@ if (1){
int Nu, int Nb, int Nk, int Nm,
Eigen::MatrixXcd& M)
{
Glog << "unpackHermitBlockTriDiagMatToEigen() begin" << '\n';
// Glog << "unpackHermitBlockTriDiagMatToEigen() begin" << '\n';
assert( Nk%Nu == 0 && Nm%Nu == 0 );
assert( Nk <= Nm );
M = Eigen::MatrixXcd::Zero(Nk,Nk);
@ -953,7 +953,7 @@ if (1){
M(u+(k/Nu)*Nu,k-Nu) = lme[u][k-Nu];
}
}
Glog << "unpackHermitBlockTriDiagMatToEigen() end" << std::endl;
// Glog << "unpackHermitBlockTriDiagMatToEigen() end" << std::endl;
}
@ -963,7 +963,7 @@ if (1){
int Nu, int Nb, int Nk, int Nm,
Eigen::MatrixXcd& M)
{
Glog << "packHermitBlockTriDiagMatfromEigen() begin" << '\n';
// Glog << "packHermitBlockTriDiagMatfromEigen() begin" << '\n';
assert( Nk%Nu == 0 && Nm%Nu == 0 );
assert( Nk <= Nm );
@ -979,7 +979,7 @@ if (1){
lme[u][k-Nu] = M(u+(k/Nu)*Nu,k-Nu);
}
}
Glog << "packHermitBlockTriDiagMatfromEigen() end" <<std::endl;
// Glog << "packHermitBlockTriDiagMatfromEigen() end" <<std::endl;
}
@ -988,7 +988,7 @@ if (1){
RealD Dsh,
Eigen::MatrixXcd& Qprod)
{
Glog << "shiftedQRDecompEigen() begin" << '\n';
// Glog << "shiftedQRDecompEigen() begin" << '\n';
Eigen::MatrixXcd Q = Eigen::MatrixXcd::Zero(Nm,Nm);
Eigen::MatrixXcd R = Eigen::MatrixXcd::Zero(Nm,Nm);
Eigen::MatrixXcd Mtmp = Eigen::MatrixXcd::Zero(Nm,Nm);
@ -1004,7 +1004,7 @@ if (1){
// lower triangular part used to represent series
// of Q sequence.
Glog << "shiftedQRDecompEigen() Housholder & QR" << '\n';
// Glog << "shiftedQRDecompEigen() Housholder & QR" << '\n';
// equivalent operation of Qprod *= Q
//M = Eigen::MatrixXcd::Zero(Nm,Nm);
@ -1025,7 +1025,7 @@ if (1){
Mtmp = Eigen::MatrixXcd::Zero(Nm,Nm);
Glog << "shiftedQRDecompEigen() Mtmp create" << '\n';
// Glog << "shiftedQRDecompEigen() Mtmp create" << '\n';
for (int i=0; i<Nm; ++i) {
for (int j=0; j<Nm-(Nu+1); ++j) {
for (int k=0; k<Nu+1+j; ++k) {
@ -1033,7 +1033,7 @@ if (1){
}
}
}
Glog << "shiftedQRDecompEigen() Mtmp loop1" << '\n';
// Glog << "shiftedQRDecompEigen() Mtmp loop1" << '\n';
for (int i=0; i<Nm; ++i) {
for (int j=Nm-(Nu+1); j<Nm; ++j) {
for (int k=0; k<Nm; ++k) {
@ -1041,7 +1041,7 @@ if (1){
}
}
}
Glog << "shiftedQRDecompEigen() Mtmp loop2" << '\n';
// Glog << "shiftedQRDecompEigen() Mtmp loop2" << '\n';
//static int ntimes = 2;
//for (int j=0; j<Nm-(ntimes*Nu); ++j) {
@ -1067,13 +1067,13 @@ if (1){
Mtmp(j,i) = conj(Mtmp(i,j));
}
}
Glog << "shiftedQRDecompEigen() Mtmp loop3" << '\n';
// Glog << "shiftedQRDecompEigen() Mtmp loop3" << '\n';
for (int i=0; i<Nm; ++i) {
Mtmp(i,i) = real(Mtmp(i,i)) + Dsh;
}
Glog << "shiftedQRDecompEigen() Mtmp loop4" << '\n';
// Glog << "shiftedQRDecompEigen() Mtmp loop4" << '\n';
M = Mtmp;
//M = Q.adjoint()*(M*Q);
@ -1085,7 +1085,7 @@ if (1){
// }
//}
Glog << "shiftedQRDecompEigen() end" <<std::endl;
// Glog << "shiftedQRDecompEigen() end" <<std::endl;
}
void exampleQRDecompEigen(void)