Updating Kokkos lib

git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@15556 f3b2605a-c512-4ea7-a41b-209d697bcdaa

lib/kokkos/example/multi_fem/ParallelMachine.hpp

@@ -0,0 +1,118 @@
+/*
+//@HEADER
+// ************************************************************************
+// 
+//                        Kokkos v. 2.0
+//              Copyright (2014) Sandia Corporation
+// 
+// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
+// the U.S. Government retains certain rights in this software.
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// 1. Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+//
+// 3. Neither the name of the Corporation nor the names of the
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Questions? Contact  H. Carter Edwards (hcedwar@sandia.gov)
+// 
+// ************************************************************************
+//@HEADER
+*/
+
+#error "ParallelMachine"
+
+#ifndef PARALLELMACHINE_HPP
+#define PARALLELMACHINE_HPP
+
+//------------------------------------------------------------------------
+
+#include <iosfwd>
+
+#include <Kokkos_Core.hpp>
+
+//------------------------------------------------------------------------
+
+#if defined( KOKKOS_HAVE_MPI )
+#include <mpi.h>
+#else
+  typedef int MPI_Comm ;
+#endif
+
+//------------------------------------------------------------------------
+//------------------------------------------------------------------------
+
+namespace Parallel {
+
+/** \brief  Hybrid parallel machine with MPI+Kokkos::Threads or MPI+Kokkos::Cuda.
+ *
+ *  Initialization of MPI and Kokkos device has interdependencies which this
+ *  class manages.  The command line and environment variables are queried to initialize
+ *  the Threads or Cuda device:
+ *
+ *    1)  cuda               : initializes Cuda device
+ *    2)  host               : initializes Threads device with all hwloc detected cores.
+ *    3)  host #gang #worker : initializes Threads with specified
+ */
+class Machine {
+private:
+
+  MPI_Comm m_mpi_comm ;
+  int      m_mpi_size ;
+  int      m_mpi_rank ;
+  unsigned m_mpi_gpu ;
+  unsigned m_gpu_arch ;
+
+  Machine();
+  Machine( const Machine & );
+  Machine & operator = ( const Machine & );
+
+public:
+
+  /** \brief  Coordinated initialize MPI, Cuda, or Threads devices from 'main'.  */
+  Machine( int * argc , char *** argv );
+
+  ~Machine();
+
+  MPI_Comm mpi_comm() const { return m_mpi_comm ; }
+
+  int mpi_size() const { return m_mpi_size ; }
+  int mpi_rank() const { return m_mpi_rank ; }
+
+  /** \brief  If using MPI that can directly operate on GPU memory */
+  bool mpi_gpu() const { return m_mpi_gpu ; }
+
+  /** \brief  If using GPU then what architecture */
+  unsigned gpu_arch() const { return m_gpu_arch ; }
+
+  void print_configuration( std::ostream & ) const ;
+};
+
+}
+
+//------------------------------------------------------------------------
+
+#endif /* #ifndef PARALLELMACHINE_HPP */
+
+