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lammps/lib/kokkos/example/feint/main.cpp
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//@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
#include <utility>
#include <iostream>
#include <Kokkos_Core.hpp>
#include <feint_fwd.hpp>
int main()
{
#if defined( KOKKOS_ENABLE_THREADS )
{
// Use 4 cores per NUMA region, unless fewer available
const unsigned use_numa_count = Kokkos::hwloc::get_available_numa_count();
const unsigned use_cores_per_numa = std::min( 4u , Kokkos::hwloc::get_available_cores_per_numa() );
Kokkos::Threads::initialize( use_numa_count * use_cores_per_numa );
std::cout << "feint< Threads , NotUsingAtomic >" << std::endl ;
Kokkos::Example::feint< Kokkos::Threads , false >();
std::cout << "feint< Threads , Usingtomic >" << std::endl ;
Kokkos::Example::feint< Kokkos::Threads , true >();
Kokkos::Threads::finalize();
}
#endif
#if defined( KOKKOS_ENABLE_OPENMP )
{
// Use 4 cores per NUMA region, unless fewer available
const unsigned use_numa_count = Kokkos::hwloc::get_available_numa_count();
const unsigned use_cores_per_numa = std::min( 4u , Kokkos::hwloc::get_available_cores_per_numa() );
Kokkos::OpenMP::initialize( use_numa_count * use_cores_per_numa );
std::cout << "feint< OpenMP , NotUsingAtomic >" << std::endl ;
Kokkos::Example::feint< Kokkos::OpenMP , false >();
std::cout << "feint< OpenMP , Usingtomic >" << std::endl ;
Kokkos::Example::feint< Kokkos::OpenMP , true >();
Kokkos::OpenMP::finalize();
}
#endif
#if defined( KOKKOS_ENABLE_CUDA )
{
// Initialize Host mirror device
Kokkos::HostSpace::execution_space::initialize(1);
const unsigned device_count = Kokkos::Cuda::detect_device_count();
// Use the last device:
Kokkos::Cuda::initialize( Kokkos::Cuda::SelectDevice(device_count-1) );
std::cout << "feint< Cuda , NotUsingAtomic >" << std::endl ;
Kokkos::Example::feint< Kokkos::Cuda , false >();
std::cout << "feint< Cuda , UsingAtomic >" << std::endl ;
Kokkos::Example::feint< Kokkos::Cuda , true >();
Kokkos::Cuda::finalize();
Kokkos::HostSpace::execution_space::finalize();
}
#endif
}
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