From 0b61f75c9e106ca5a73d94584792461d7220e7d1 Mon Sep 17 00:00:00 2001
From: Chulwoo Jung <chulwoo@bnl.gov>
Date: Mon, 13 Mar 2017 00:12:43 -0400
Subject: [PATCH] Adding ZMobius CG test

---
 tests/solver/Test_zmobius_cg_prec.cc | 111 +++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 tests/solver/Test_zmobius_cg_prec.cc

diff --git a/tests/solver/Test_zmobius_cg_prec.cc b/tests/solver/Test_zmobius_cg_prec.cc
new file mode 100644
index 00000000..c66b6246
--- /dev/null
+++ b/tests/solver/Test_zmobius_cg_prec.cc
@@ -0,0 +1,111 @@
+/*************************************************************************************
+
+Grid physics library, www.github.com/paboyle/Grid
+
+Source file: ./tests/Test_dwf_cg_prec.cc
+
+Copyright (C) 2015
+
+Author: Peter Boyle <paboyle@ph.ed.ac.uk>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+See the full license in the file "LICENSE" in the top level distribution
+directory
+*************************************************************************************/
+/*  END LEGAL */
+#include <Grid/Grid.h>
+
+using namespace std;
+using namespace Grid;
+using namespace Grid::QCD;
+
+template <class d>
+struct scal {
+  d internal;
+};
+
+Gamma::Algebra Gmu[] = {Gamma::Algebra::GammaX, Gamma::Algebra::GammaY, Gamma::Algebra::GammaZ,
+                            Gamma::Algebra::GammaT};
+
+int main(int argc, char** argv) {
+  Grid_init(&argc, &argv);
+
+  const int Ls = 16;
+
+  GridCartesian* UGrid = SpaceTimeGrid::makeFourDimGrid(
+      GridDefaultLatt(), GridDefaultSimd(Nd, vComplex::Nsimd()),
+      GridDefaultMpi());
+  GridRedBlackCartesian* UrbGrid =
+      SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid);
+  GridCartesian* FGrid = SpaceTimeGrid::makeFiveDimGrid(Ls, UGrid);
+  GridRedBlackCartesian* FrbGrid =
+      SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls, UGrid);
+
+  std::vector<int> seeds4({1, 2, 3, 4});
+  std::vector<int> seeds5({5, 6, 7, 8});
+  GridParallelRNG RNG5(FGrid);
+  RNG5.SeedFixedIntegers(seeds5);
+  GridParallelRNG RNG4(UGrid);
+  RNG4.SeedFixedIntegers(seeds4);
+
+  LatticeFermion src(FGrid);
+  random(RNG5, src);
+  LatticeFermion result(FGrid);
+  result = zero;
+  LatticeGaugeField Umu(UGrid);
+
+  SU3::HotConfiguration(RNG4, Umu);
+
+  std::cout << GridLogMessage << "Lattice dimensions: " << GridDefaultLatt()
+            << "   Ls: " << Ls << std::endl;
+
+  std::vector<LatticeColourMatrix> U(4, UGrid);
+  for (int mu = 0; mu < Nd; mu++) {
+    U[mu] = PeekIndex<LorentzIndex>(Umu, mu);
+  }
+
+  RealD mass = 0.01;
+  RealD M5 = 1.8;
+  std::vector < std::complex<double>  > omegas;
+  for(int i=0;i<Ls;i++){
+  	std::complex<double> temp (0.25+0.00*i, 0.0+0.00*i);
+ 	 omegas.push_back(temp);
+  }
+//  DomainWallFermionR Ddwf(Umu, *FGrid, *FrbGrid, *UGrid, *UrbGrid, mass, M5);
+  ZMobiusFermionR Ddwf(Umu, *FGrid, *FrbGrid, *UGrid, *UrbGrid, mass, M5, omegas,1.,0.);
+
+  LatticeFermion src_o(FrbGrid);
+  LatticeFermion result_o(FrbGrid);
+  pickCheckerboard(Odd, src_o, src);
+  result_o = zero;
+
+  GridStopWatch CGTimer;
+
+  SchurDiagMooeeOperator<ZMobiusFermionR, LatticeFermion> HermOpEO(Ddwf);
+  ConjugateGradient<LatticeFermion> CG(1.0e-8, 10000, 0);// switch off the assert
+
+  CGTimer.Start();
+  CG(HermOpEO, src_o, result_o);
+  CGTimer.Stop();
+
+  std::cout << GridLogMessage << "Total CG time : " << CGTimer.Elapsed()
+            << std::endl;
+
+  std::cout << GridLogMessage << "######## Dhop calls summary" << std::endl;
+  Ddwf.Report();
+
+  Grid_finalize();
+}