Tpetra_Details_DefaultTypes.hpp

// @HEADER
// *****************************************************************************
//          Tpetra: Templated Linear Algebra Services Package
//
// Copyright 2008 NTESS and the Tpetra contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#ifndef TPETRA_DETAILS_DEFAULTTYPES_HPP
#define TPETRA_DETAILS_DEFAULTTYPES_HPP

#include "TpetraCore_config.h"
#include "Tpetra_KokkosClassic_DefaultNode_config.h"
#include "Tpetra_KokkosCompat_ClassicNodeAPI_Wrapper.hpp"

namespace Tpetra {

namespace Details {

namespace DefaultTypes {
#if defined(HAVE_TPETRA_INST_DOUBLE)
  using scalar_type = double;
#elif defined(HAVE_TPETRA_INST_FLOAT)
  using scalar_type = float;
#else
#  error "Tpetra: No scalar types in the set {float, double} have been enabled."
#endif

  using local_ordinal_type = int;

#if defined(HAVE_TPETRA_INST_INT_LONG_LONG)
    using global_ordinal_type = long long;
#elif defined(HAVE_TPETRA_INST_INT_INT)
    using global_ordinal_type = int;
#elif defined(HAVE_TPETRA_INST_INT_LONG)
    using global_ordinal_type = long;
#elif defined(HAVE_TPETRA_INST_INT_UNSIGNED_LONG)
    using global_ordinal_type = unsigned long;
#elif defined(HAVE_TPETRA_INST_INT_UNSIGNED)
    using global_ordinal_type = unsigned;
#else
    #error "Tpetra: No global ordinal types in the set {int, long long, long, unsigned long, unsigned} have been enabled."
#endif

#if defined(HAVE_TPETRA_DEFAULTNODE_SYCLWRAPPERNODE)
  using execution_space = ::Kokkos::Experimental::SYCL;
  using node_type = Tpetra::KokkosCompat::KokkosSYCLWrapperNode;
#elif defined(HAVE_TPETRA_DEFAULTNODE_HIPWRAPPERNODE)
  using execution_space = ::Kokkos::HIP;
  using node_type = Tpetra::KokkosCompat::KokkosHIPWrapperNode;
#elif defined(HAVE_TPETRA_DEFAULTNODE_CUDAWRAPPERNODE)
  using execution_space = ::Kokkos::Cuda;
  using node_type = Tpetra::KokkosCompat::KokkosCudaWrapperNode;
#elif defined(HAVE_TPETRA_DEFAULTNODE_OPENMPWRAPPERNODE)
  using execution_space = ::Kokkos::OpenMP;
  using node_type = Tpetra::KokkosCompat::KokkosOpenMPWrapperNode;
#elif defined(HAVE_TPETRA_DEFAULTNODE_THREADSWRAPPERNODE)
  using execution_space = ::Kokkos::Threads;
  using node_type = Tpetra::KokkosCompat::KokkosThreadsWrapperNode;
#elif defined(HAVE_TPETRA_DEFAULTNODE_SERIALWRAPPERNODE)
  using execution_space = ::Kokkos::Serial;
  using node_type = Tpetra::KokkosCompat::KokkosSerialWrapperNode;
#else
#    error "No default Tpetra Node type specified.  Please set the CMake option Tpetra_DefaultNode to a valid Node type."
#endif


  template<typename ExecutionSpace>
  struct CommBufferMemorySpace
  {
    using type = typename ExecutionSpace::memory_space;
  };

#ifdef KOKKOS_ENABLE_CUDA
  template<>
  struct CommBufferMemorySpace<Kokkos::Cuda>
  {
    using type = Kokkos::CudaSpace;
  };
#endif

#ifdef KOKKOS_ENABLE_HIP
  template<>
  struct CommBufferMemorySpace<Kokkos::HIP>
  {
    using type = Kokkos::HIPSpace;
  };
#endif

#ifdef KOKKOS_ENABLE_SYCL
  template<>
  struct CommBufferMemorySpace<Kokkos::Experimental::SYCL>
  {
    using type = Kokkos::Experimental::SYCLDeviceUSMSpace;
  };
#endif

  template<typename Device>
  using comm_buffer_memory_space = typename CommBufferMemorySpace<typename Device::execution_space>::type;

} // namespace DefaultTypes

} // namespace Details

} // namespace Tpetra

#endif // TPETRA_DETAILS_DEFAULTTYPES_HPP