/usr/include/trilinos/Kokkos_DefaultNode.hpp is in libtrilinos-tpetra-dev 12.10.1-3.
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// ************************************************************************
//
// Kokkos: Node API and Parallel Node Kernels
// Copyright (2008) Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
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// modification, are permitted provided that the following conditions are
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//
// 1. Redistributions of source code must retain the above copyright
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//@HEADER
#ifndef KOKKOS_DEFAULTNODE_HPP
#define KOKKOS_DEFAULTNODE_HPP
#include "Kokkos_ConfigDefs.hpp"
#include "Kokkos_NodeAPIConfigDefs.hpp"
#include "KokkosClassic_DefaultNode_config.h"
#include "KokkosCompat_ClassicNodeAPI_Wrapper.hpp"
#include "Teuchos_ParameterList.hpp"
#include "Teuchos_RCP.hpp"
namespace KokkosClassic {
namespace Details {
/// \fn getNode
/// \brief Create and return a Kokkos Node instance.
/// \tparam NodeType The Kokkos Node type.
///
/// \warning This function is <i>not</i> safe to be called by
/// multiple threads simultaneously. The first call to this
/// function must be serialized. Also, RCP is not currently
/// thread safe.
///
/// \param params [in/out] On input: Any parameters that the Kokkos
/// Node accepts. On output, the list may be modified to include
/// missing parameters and their default values. If params is
/// null, default parameters will be used.
///
/// Every Kokkos Node's constructor takes a Teuchos::ParameterList.
/// We presume that for every Kokkos Node, if that list of
/// parameters is empty, then the Node will use default parameters.
/// This is true for all the Node types implemented in Kokkos.
template<class NodeType>
Teuchos::RCP<NodeType>
getNode (const Teuchos::RCP<Teuchos::ParameterList>& params = Teuchos::null) {
static Teuchos::RCP<NodeType> theNode;
if (theNode.is_null ()) {
if (params.is_null ()) {
Teuchos::ParameterList defaultParams;
theNode = Teuchos::rcp (new NodeType (defaultParams));
} else {
theNode = Teuchos::rcp (new NodeType (*params));
}
}
return theNode;
}
} // namespace Details
/** \brief Class to specify %Kokkos default node type and instantiate the default node.
\ingroup kokkos_node_api
*/
class DefaultNode {
public:
#if defined(HAVE_TPETRA_DEFAULTNODE_CUDAWRAPPERNODE)
typedef ::Kokkos::Compat::KokkosCudaWrapperNode DefaultNodeType;
#elif defined(HAVE_TPETRA_DEFAULTNODE_OPENMPWRAPPERNODE)
typedef ::Kokkos::Compat::KokkosOpenMPWrapperNode DefaultNodeType;
#elif defined(HAVE_TPETRA_DEFAULTNODE_THREADSWRAPPERNODE)
typedef ::Kokkos::Compat::KokkosThreadsWrapperNode DefaultNodeType;
#elif defined(HAVE_TPETRA_DEFAULTNODE_SERIALWRAPPERNODE)
typedef ::Kokkos::Compat::KokkosSerialWrapperNode DefaultNodeType;
#else
# error "No default Kokkos Node type specified. Please set the CMake option Tpetra_DefaultNode to a valid Node type."
#endif
//! \brief Return a pointer to the default node.
static Teuchos::RCP<DefaultNodeType> getDefaultNode();
};
} // namespace KokkosClassic
#endif // KOKKOS_DEFAULTNODE_HPP
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