98 lines
3.3 KiB
C++
Executable File
98 lines
3.3 KiB
C++
Executable File
/*
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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 H. Carter Edwards (hcedwar@sandia.gov)
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//
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// ************************************************************************
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//@HEADER
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*/
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/*--------------------------------------------------------------------------*/
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#include <stdio.h>
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namespace Test {
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template< class Device , class WorkSpec = size_t >
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struct TestScan {
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typedef Device execution_space ;
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typedef long int value_type ;
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KOKKOS_INLINE_FUNCTION
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void operator()( const int iwork , value_type & update , const bool final_pass ) const
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{
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const value_type n = iwork + 1 ;
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const value_type imbalance = ( (1000 <= n) && (0 == n % 1000) ) ? 1000 : 0 ;
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// Insert an artificial load imbalance
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for ( value_type i = 0 ; i < imbalance ; ++i ) { ++update ; }
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update += n - imbalance ;
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if ( final_pass ) {
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const value_type answer = n & 1 ? ( n * ( ( n + 1 ) / 2 ) ) : ( ( n / 2 ) * ( n + 1 ) );
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if ( answer != update ) {
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printf("TestScan(%d,%ld) != %ld\n",iwork,update,answer);
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}
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}
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}
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KOKKOS_INLINE_FUNCTION
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void init( value_type & update ) const { update = 0 ; }
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KOKKOS_INLINE_FUNCTION
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void join( volatile value_type & update ,
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volatile const value_type & input ) const
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{ update += input ; }
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TestScan( const WorkSpec & N )
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{ parallel_scan( N , *this ); }
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static void test_range( const WorkSpec & begin , const WorkSpec & end )
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{
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for ( WorkSpec i = begin ; i < end ; ++i ) {
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(void) TestScan( i );
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}
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}
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};
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}
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