139 lines
4.1 KiB
C++
139 lines
4.1 KiB
C++
/*
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//@HEADER
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// ************************************************************************
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//
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// Kokkos v. 2.0
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// Copyright (2014) Sandia Corporation
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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// the U.S. Government retains certain rights in this software.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// 3. Neither the name of the Corporation nor the names of the
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Questions? Contact Christian R. Trott (crtrott@sandia.gov)
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//
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// ************************************************************************
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//@HEADER
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*/
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#include <iostream>
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#include <Kokkos_Core.hpp>
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namespace Test {
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template< class Space >
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class TestUniqueToken
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{
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public:
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typedef typename Space::execution_space execution_space;
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typedef Kokkos::View< int * , execution_space > view_type ;
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Kokkos::Experimental::UniqueToken< execution_space , Kokkos::Experimental::UniqueTokenScope::Global > tokens ;
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view_type verify ;
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view_type counts ;
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view_type errors ;
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KOKKOS_INLINE_FUNCTION
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void operator()( long ) const
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{
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const int32_t t = tokens.acquire();
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bool ok = true ;
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ok = ok && 0 <= t ;
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ok = ok && t < tokens.size();
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ok = ok && 0 == Kokkos::atomic_fetch_add( & verify(t) , 1 );
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Kokkos::atomic_fetch_add( & counts(t) , 1 );
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ok = ok && 1 == Kokkos::atomic_fetch_add( & verify(t) , -1 );
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if ( ! ok ) { Kokkos::atomic_fetch_add( & errors(0) , 1 ) ; }
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tokens.release(t);
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}
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TestUniqueToken()
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: tokens( execution_space() )
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, verify( "TestUniqueTokenVerify" , tokens.size() )
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, counts( "TestUniqueTokenCounts" , tokens.size() )
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, errors( "TestUniqueTokenErrors" , 1 )
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{}
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static void run()
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{
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using policy = Kokkos::RangePolicy<execution_space> ;
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TestUniqueToken self ;
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{
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const int duplicate = 100 ;
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const long n = duplicate * self.tokens.size();
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Kokkos::parallel_for( policy(0,n) , self );
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Kokkos::parallel_for( policy(0,n) , self );
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Kokkos::parallel_for( policy(0,n) , self );
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Kokkos::fence();
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}
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typename view_type::HostMirror host_counts =
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Kokkos::create_mirror_view( self.counts );
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Kokkos::deep_copy( host_counts , self.counts );
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int32_t max = 0 ;
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{
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const long n = host_counts.extent(0);
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for ( long i = 0 ; i < n ; ++i ) {
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if ( max < host_counts[i] ) max = host_counts[i] ;
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}
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}
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std::cout << "TestUniqueToken max reuse = " << max << std::endl ;
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typename view_type::HostMirror host_errors =
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Kokkos::create_mirror_view( self.errors );
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Kokkos::deep_copy( host_errors , self.errors );
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ASSERT_EQ( host_errors(0) , 0 );
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}
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};
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TEST_F( TEST_CATEGORY, unique_token )
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{
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TestUniqueToken< TEST_EXECSPACE >::run();
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}
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} // namespace Test
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