Added module for checkpointers

lib/qcd/hmc/checkpointers/BaseCheckpointer.h

@@ -0,0 +1,61 @@
+/*************************************************************************************
+
+Grid physics library, www.github.com/paboyle/Grid
+
+Source file: ./lib/qcd/hmc/BaseCheckpointer.h
+
+Copyright (C) 2015
+
+Author: Guido Cossu <guido.cossu@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 */
+#ifndef BASE_CHECKPOINTER
+#define BASE_CHECKPOINTER
+
+namespace Grid {
+namespace QCD {
+
+class CheckpointerParameters : Serializable {
+ public:
+  GRID_SERIALIZABLE_CLASS_MEMBERS(CheckpointerParameters, std::string,
+                                  configStem, std::string, rngStem, int,
+                                  SaveInterval, std::string, format, );
+
+  CheckpointerParameters(std::string cf = "cfg", std::string rn = "rng",
+                         int savemodulo = 1, const std::string &f = "IEEE64BIG")
+      : configStem(cf), rngStem(rn), SaveInterval(savemodulo), format(f){};
+};
+
+//////////////////////////////////////////////////////////////////////////////
+// Base class for checkpointers
+template <class Impl>
+class BaseHmcCheckpointer : public HmcObservable<typename Impl::Field> {
+ public:
+  virtual void initialize(CheckpointerParameters &Params) = 0;
+
+  virtual void CheckpointRestore(int traj, typename Impl::Field &U,
+                                 GridSerialRNG &sRNG,
+                                 GridParallelRNG &pRNG) = 0;
+
+};  // class BaseHmcCheckpointer
+///////////////////////////////////////////////////////////////////////////////
+}
+}
+#endif