Skeleton of HMC/Integrators

lib/qcd/hmc/HMC.h

@@ -0,0 +1,50 @@
+//--------------------------------------------------------------------
+/*! @file HMC.h
+ * @brief Declaration of classes for HybridMonteCarlo update
+ *
+ * @author Guido Cossu
+ */
+//--------------------------------------------------------------------
+#ifndef HMC_INCLUDED
+#define HMC_INCLUDED
+
+#include <string>
+#include <memory>
+
+namespace Grid{
+  namespace QCD{
+    
+    struct HMCparameters{
+      Integer Nsweeps; /* @brief Number of sweeps in this run */
+      Integer TotalSweeps; /* @brief If provided, the total number of sweeps */
+      Integer ThermalizationSteps;
+      Integer StartingConfig;
+      Integer SaveInterval; //Setting to 0 does not save configurations
+      std::string Filename_prefix; // To save configurations
+      
+      HMCparameters();
+    };
+    
+ 
+    class HybridMonteCarlo{
+      const HMCparameters Params;
+      GridSerialRNG& RNG; 
+      // FIXME need the integrator
+      
+      bool metropolis_test(const RealD DeltaH)const;
+      RealD evolve_step(LatticeColourMatrix&)const;
+      
+      
+    public:
+      HybridMonteCarlo(GridSerialRNG&);
+      ~HybridMonteCarlo(){};
+
+      void evolve(LatticeColourMatrix& Uin)const;
+
+    };
+    
+  }// QCD
+}// Grid
+
+
+#endif