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Clean up and unification of PVdagM and HDCG, mixed precision support

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Peter Boyle committed 2026-09-24 01:38:39 -04:00
1 parent 2043072d9c
commit eeb56e6b39
46 files changed
+1404 -3815
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examples/Example_mdagm.cc
-43
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@@ -32,50 +32,7 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
using namespace std;
using namespace Grid;
// Routes Op/AdjOp -> HermOp so that CoarsenOperator and CreateSubspace
// both see the HPD operator M†M rather than bare M.
template<class Field>
class HermOpAdaptor : public LinearOperatorBase<Field>
{
LinearOperatorBase<Field> &wrapped;
public:
HermOpAdaptor(LinearOperatorBase<Field> &wrapme) : wrapped(wrapme) {};
void Op (const Field &in, Field &out) { wrapped.HermOp(in,out); }
void HermOp (const Field &in, Field &out) { wrapped.HermOp(in,out); }
void AdjOp (const Field &in, Field &out) { wrapped.HermOp(in,out); }
void OpDiag (const Field &in, Field &out) { GRID_ASSERT(0); }
void OpDir (const Field &in, Field &out,int dir,int disp) { GRID_ASSERT(0); }
void OpDirAll(const Field &in, std::vector<Field> &out) { GRID_ASSERT(0); }
void HermOpAndNorm(const Field &in, Field &out, RealD &n1, RealD &n2) {
wrapped.HermOp(in, out);
ComplexD dot = innerProduct(in, out);
n1 = real(dot);
n2 = norm2(out);
}
};
// Fixed-iteration CG smoother: runs exactly `iters` steps of CG on the
// shifted operator. tolerance=0 so CG never exits early.
template<class Field>
class CGSmoother : public LinearFunction<Field>
{
public:
using LinearFunction<Field>::operator();
typedef LinearOperatorBase<Field> FineOperator;
FineOperator &_SmootherOperator;
int iters;
CGSmoother(int _iters, FineOperator &SmootherOperator)
: _SmootherOperator(SmootherOperator), iters(_iters)
{
std::cout << GridLogMessage << " CGSmoother order " << iters << std::endl;
}
void operator()(const Field &in, Field &out)
{
ConjugateGradient<Field> CG(0.0, iters, false);
out = Zero();
CG(_SmootherOperator, in, out);
}
};
int main (int argc, char ** argv)
{