portelli/Grid
1
0
Fork 0
mirror of https://github.com/paboyle/Grid.git synced 2025-06-13 12:47:05 +01:00
Code Releases Activity

Patches for beginnings of an overlap multigrid

Browse Source
This commit is contained in:
Peter Boyle
2015-06-20 22:22:56 +01:00
parent a0d4f832cf
commit b4a6dbfa65
11 changed files with 285 additions and 198 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
lib/algorithms/iterative/ConjugateResidual.h
View File

@ -16,7 +16,7 @@ namespace Grid {
int verbose;
ConjugateResidual(RealD tol,Integer maxit) : Tolerance(tol), MaxIterations(maxit) {
verbose=1;
verbose=0;
};
void operator() (LinearOperatorBase<Field> &Linop,const Field &src, Field &psi){
@ -37,8 +37,8 @@ namespace Grid {
Linop.HermOpAndNorm(p,Ap,pAp,pAAp);
Linop.HermOpAndNorm(r,Ar,rAr,rAAr);
std::cout << "pAp, pAAp"<< pAp<<" "<<pAAp<<std::endl;
std::cout << "rAr, rAAr"<< rAr<<" "<<rAAr<<std::endl;
if(verbose) std::cout << "pAp, pAAp"<< pAp<<" "<<pAAp<<std::endl;
if(verbose) std::cout << "rAr, rAAr"<< rAr<<" "<<rAAr<<std::endl;
cp =norm2(r);
ssq=norm2(src);
@ -63,15 +63,16 @@ namespace Grid {
axpy(p,b,p,r);
pAAp=axpy_norm(Ap,b,Ap,Ar);
std::cout<<"ConjugateResidual: iteration " <<k<<" residual "<<cp<< " target"<< rsq<<std::endl;
if(verbose) std::cout<<"ConjugateResidual: iteration " <<k<<" residual "<<cp<< " target"<< rsq<<std::endl;
if(cp<rsq) {
Linop.HermOp(psi,Ap);
axpy(r,-1.0,src,Ap);
RealD true_resid = norm2(r);
std::cout<<"ConjugateResidual: Converged on iteration " <<k<<" residual "<<cp<< " target"<< rsq<<std::endl;
std::cout<<"ConjugateResidual: true residual is "<<true_resid<<std::endl;
std::cout<<"ConjugateResidual: target residual was "<<Tolerance <<std::endl;
std::cout<<"ConjugateResidual: Converged on iteration " <<k
<< " computed residual "<<sqrt(cp/ssq)
<< " true residual "<<true_resid
<< " target " <<Tolerance <<std::endl;
return;
}