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lammps/lib/kokkos/containers/unit_tests/TestDynamicView.hpp
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TestDynamicView.hpp
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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
*/
#ifndef KOKKOS_TEST_DYNAMICVIEW_HPP
#define KOKKOS_TEST_DYNAMICVIEW_HPP
#include <gtest/gtest.h>
#include <iostream>
#include <cstdlib>
#include <cstdio>
#include <Kokkos_Core.hpp>
#include <Kokkos_DynamicView.hpp>
#include <impl/Kokkos_Timer.hpp>
namespace Test {
template< typename Scalar , class Space >
struct TestDynamicView
{
typedef typename Space::execution_space execution_space ;
typedef typename Space::memory_space memory_space ;
typedef Kokkos::MemoryPool<typename Space::device_type> memory_pool_type;
typedef Kokkos::Experimental::DynamicView<Scalar*,Space> view_type;
typedef typename view_type::const_type const_view_type ;
typedef typename Kokkos::TeamPolicy<execution_space>::member_type member_type ;
typedef double value_type;
struct TEST {};
struct VERIFY {};
view_type a;
const unsigned total_size ;
TestDynamicView( const view_type & arg_a , const unsigned arg_total )
: a(arg_a), total_size( arg_total ) {}
KOKKOS_INLINE_FUNCTION
void operator() ( const TEST , member_type team_member, double& value) const
{
const unsigned int team_idx = team_member.league_rank() * team_member.team_size();
if ( team_member.team_rank() == 0 ) {
unsigned n = team_idx + team_member.team_size();
if ( total_size < n ) n = total_size ;
a.resize_parallel( n );
if ( a.extent(0) < n ) {
Kokkos::abort("GrowTest TEST failed resize_parallel");
}
}
// Make sure resize is done for all team members:
team_member.team_barrier();
const unsigned int val = team_idx + team_member.team_rank();
if ( val < total_size ) {
value += val ;
a( val ) = val ;
}
}
KOKKOS_INLINE_FUNCTION
void operator() ( const VERIFY , member_type team_member, double& value) const
{
const unsigned int val =
team_member.team_rank() +
team_member.league_rank() * team_member.team_size();
if ( val < total_size ) {
if ( val != a(val) ) {
Kokkos::abort("GrowTest VERIFY failed resize_parallel");
}
value += a(val);
}
}
static void run( unsigned arg_total_size )
{
typedef Kokkos::TeamPolicy<execution_space,TEST> TestPolicy ;
typedef Kokkos::TeamPolicy<execution_space,VERIFY> VerifyPolicy ;
// printf("TestDynamicView::run(%d) construct memory pool\n",arg_total_size);
memory_pool_type pool( memory_space()
, arg_total_size * sizeof(Scalar) * 1.2
, 500 /* min block size in bytes */
, 30000 /* max block size in bytes */
, 1000000 /* min superblock size in bytes */
);
// printf("TestDynamicView::run(%d) construct dynamic view\n",arg_total_size);
view_type da("A",pool,arg_total_size);
const_view_type ca(da);
// printf("TestDynamicView::run(%d) construct test functor\n",arg_total_size);
TestDynamicView functor(da,arg_total_size);
const unsigned team_size = TestPolicy::team_size_recommended(functor);
const unsigned league_size = ( arg_total_size + team_size - 1 ) / team_size ;
double reference = 0;
double result = 0;
// printf("TestDynamicView::run(%d) run functor test\n",arg_total_size);
Kokkos::parallel_reduce( TestPolicy(league_size,team_size) , functor , reference);
execution_space::fence();
// printf("TestDynamicView::run(%d) run functor verify\n",arg_total_size);
Kokkos::parallel_reduce( VerifyPolicy(league_size,team_size) , functor , result );
execution_space::fence();
// printf("TestDynamicView::run(%d) done\n",arg_total_size);
}
};
} // namespace Test
#endif /* #ifndef KOKKOS_TEST_DYNAMICVIEW_HPP */
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