From f9b41a84d2a816f52df8335f44d27c271731ffc2 Mon Sep 17 00:00:00 2001
From: Peter Boyle <paboyle@ph.ed.ac.uk>
Date: Fri, 7 Apr 2023 15:42:45 -0400
Subject: [PATCH] Trajectory runs to completion on Crusher within wall clock
 time

---
 .../ConjugateGradientMultiShiftCleanup.h         | 16 ++++++++--------
 .../ConjugateGradientMultiShiftMixedPrec.h       |  2 +-
 .../GeneralEvenOddRationalRatioMixedPrec.h       | 13 +++++--------
 HMC/Mobius2p1f_DD_EOFA_96I_mshift.cc             |  8 ++++----
 4 files changed, 18 insertions(+), 21 deletions(-)

diff --git a/Grid/algorithms/iterative/ConjugateGradientMultiShiftCleanup.h b/Grid/algorithms/iterative/ConjugateGradientMultiShiftCleanup.h
index 17714f09..23baff61 100644
--- a/Grid/algorithms/iterative/ConjugateGradientMultiShiftCleanup.h
+++ b/Grid/algorithms/iterative/ConjugateGradientMultiShiftCleanup.h
@@ -166,16 +166,16 @@ public:
       rsqf[s] =rsq[s];
       std::cout<<GridLogMessage<<"ConjugateGradientMultiShiftMixedPrecCleanup: shift "<< s <<" target resid "<<rsq[s]<<std::endl;
       //      ps_d[s] = src_d;
-      precisionChangeFast(ps_f[s],src_d);
+      precisionChange(ps_f[s],src_d);
     }
     // r and p for primary
     p_d = src_d; //primary copy --- make this a reference to ps_d to save axpys
     r_d = p_d;
     
     //MdagM+m[0]
-    precisionChangeFast(p_f,p_d);
+    precisionChange(p_f,p_d);
     Linop_f.HermOpAndNorm(p_f,mmp_f,d,qq); // mmp = MdagM p        d=real(dot(p, mmp)),  qq=norm2(mmp)
-    precisionChangeFast(tmp_d,mmp_f);
+    precisionChange(tmp_d,mmp_f);
     Linop_d.HermOpAndNorm(p_d,mmp_d,d,qq); // mmp = MdagM p        d=real(dot(p, mmp)),  qq=norm2(mmp)
     tmp_d = tmp_d - mmp_d;
     std::cout << " Testing operators match "<<norm2(mmp_d)<<" f "<<norm2(mmp_f)<<" diff "<< norm2(tmp_d)<<std::endl;
@@ -204,7 +204,7 @@ public:
   
     for(int s=0;s<nshift;s++) {
       axpby(psi_d[s],0.,-bs[s]*alpha[s],src_d,src_d);
-      precisionChangeFast(psi_f[s],psi_d[s]);
+      precisionChange(psi_f[s],psi_d[s]);
     }
   
     ///////////////////////////////////////
@@ -225,7 +225,7 @@ public:
       AXPYTimer.Stop();
 
       PrecChangeTimer.Start();
-      precisionChangeFast(r_f, r_d);
+      precisionChange(r_f, r_d);
       PrecChangeTimer.Stop();
 
       AXPYTimer.Start();
@@ -243,13 +243,13 @@ public:
 
       cp=c;
       PrecChangeTimer.Start();
-      precisionChangeFast(p_f, p_d); //get back single prec search direction for linop
+      precisionChange(p_f, p_d); //get back single prec search direction for linop
       PrecChangeTimer.Stop();
       MatrixTimer.Start();  
       Linop_f.HermOp(p_f,mmp_f);
       MatrixTimer.Stop();  
       PrecChangeTimer.Start();
-      precisionChangeFast(mmp_d, mmp_f); // From Float to Double
+      precisionChange(mmp_d, mmp_f); // From Float to Double
       PrecChangeTimer.Stop();
 
       d=real(innerProduct(p_d,mmp_d));    
@@ -311,7 +311,7 @@ public:
 	SolverTimer.Stop();
 
 	for(int s=0;s<nshift;s++){
-	  precisionChangeFast(psi_d[s],psi_f[s]);
+	  precisionChange(psi_d[s],psi_f[s]);
 	}
 
 	
diff --git a/Grid/algorithms/iterative/ConjugateGradientMultiShiftMixedPrec.h b/Grid/algorithms/iterative/ConjugateGradientMultiShiftMixedPrec.h
index a628a9cf..d3fb282a 100644
--- a/Grid/algorithms/iterative/ConjugateGradientMultiShiftMixedPrec.h
+++ b/Grid/algorithms/iterative/ConjugateGradientMultiShiftMixedPrec.h
@@ -211,7 +211,7 @@ public:
     Linop_d.HermOpAndNorm(p_d,mmp_d,d,qq); // mmp = MdagM p        d=real(dot(p, mmp)),  qq=norm2(mmp)
     tmp_d = tmp_d - mmp_d;
     std::cout << " Testing operators match "<<norm2(mmp_d)<<" f "<<norm2(mmp_f)<<" diff "<< norm2(tmp_d)<<std::endl;
-    //    assert(norm2(tmp_d)< 1.0e-4);
+    assert(norm2(tmp_d)< 1.0);
 
     axpy(mmp_d,mass[0],p_d,mmp_d);
     RealD rn = norm2(p_d);
diff --git a/Grid/qcd/action/pseudofermion/GeneralEvenOddRationalRatioMixedPrec.h b/Grid/qcd/action/pseudofermion/GeneralEvenOddRationalRatioMixedPrec.h
index 104e3376..d24947b7 100644
--- a/Grid/qcd/action/pseudofermion/GeneralEvenOddRationalRatioMixedPrec.h
+++ b/Grid/qcd/action/pseudofermion/GeneralEvenOddRationalRatioMixedPrec.h
@@ -53,9 +53,10 @@ NAMESPACE_BEGIN(Grid);
       Integer ReliableUpdateFreq;
     protected:
 
+      //Action evaluation
       //Allow derived classes to override the multishift CG
       virtual void multiShiftInverse(bool numerator, const MultiShiftFunction &approx, const Integer MaxIter, const FermionFieldD &in, FermionFieldD &out){
-#if 0
+#if 1
 	SchurDifferentiableOperator<ImplD> schurOp(numerator ? NumOpD : DenOpD);
 	ConjugateGradientMultiShift<FermionFieldD> msCG(MaxIter, approx);
 	msCG(schurOp,in, out);
@@ -70,9 +71,10 @@ NAMESPACE_BEGIN(Grid);
 	msCG(schurOpD, in, out);
 #endif
       }
+      //Force evaluation
       virtual void multiShiftInverse(bool numerator, const MultiShiftFunction &approx, const Integer MaxIter, const FermionFieldD &in, std::vector<FermionFieldD> &out_elems, FermionFieldD &out){
 	SchurDifferentiableOperator<ImplD> schurOpD(numerator ? NumOpD : DenOpD);
-	SchurDifferentiableOperator<ImplF>  schurOpF (numerator ? NumOpF  : DenOpF);
+	SchurDifferentiableOperator<ImplF>  schurOpF(numerator ? NumOpF  : DenOpF);
 
 	FermionFieldD inD(NumOpD.FermionRedBlackGrid());
 	FermionFieldD outD(NumOpD.FermionRedBlackGrid());
@@ -84,20 +86,15 @@ NAMESPACE_BEGIN(Grid);
       virtual void ImportGauge(const typename ImplD::GaugeField &Ud){
 
 	typename ImplF::GaugeField Uf(NumOpF.GaugeGrid());
-	typename ImplD::GaugeField Ud2(NumOpD.GaugeGrid());
 	precisionChange(Uf, Ud);
-	precisionChange(Ud2, Ud);
 
-	std::cout << "Importing "<<norm2(Ud)<<" "<< norm2(Uf)<<" " << norm2(Ud2)<<std::endl;
+	std::cout << "Importing "<<norm2(Ud)<<" "<< norm2(Uf)<<" " <<std::endl;
 	
 	NumOpD.ImportGauge(Ud);
 	DenOpD.ImportGauge(Ud);
 
 	NumOpF.ImportGauge(Uf);
 	DenOpF.ImportGauge(Uf);
-
-	NumOpD.ImportGauge(Ud2);
-	DenOpD.ImportGauge(Ud2);
       }
       
     public:
diff --git a/HMC/Mobius2p1f_DD_EOFA_96I_mshift.cc b/HMC/Mobius2p1f_DD_EOFA_96I_mshift.cc
index 792b23f9..39982763 100644
--- a/HMC/Mobius2p1f_DD_EOFA_96I_mshift.cc
+++ b/HMC/Mobius2p1f_DD_EOFA_96I_mshift.cc
@@ -227,7 +227,7 @@ int main(int argc, char **argv) {
   //  std::vector<Real> hasenbusch({ light_mass, 0.005, 0.0145, 0.045, 0.108, 0.25, 0.51 , pv_mass }); // Updated
   //  std::vector<Real> hasenbusch({ light_mass, 0.0145, 0.045, 0.108, 0.25, 0.51 , 0.75 , pv_mass });
 
-  int SP_iters=10000;
+  int SP_iters=9000;
   
   RationalActionParams OFRp; // Up/down
   OFRp.lo       = 6.0e-5;
@@ -362,12 +362,12 @@ int main(int argc, char **argv) {
 
   // Probably dominates the force - back to EOFA.
   OneFlavourRationalParams SFRp;
-  SFRp.lo       = 0.25;
+  SFRp.lo       = 0.1;
   SFRp.hi       = 25.0;
   SFRp.MaxIter  = 10000;
-  SFRp.tolerance= 1.0e-5;
+  SFRp.tolerance= 1.0e-8;
   SFRp.mdtolerance= 2.0e-4;
-  SFRp.degree   = 8;
+  SFRp.degree   = 12;
   SFRp.precision= 50;
   
   MobiusEOFAFermionD Strange_Op_L (U , *FGrid , *FrbGrid , *GridPtr , *GridRBPtr , strange_mass, strange_mass, pv_mass, 0.0, -1, M5, b, c);