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Kokkos_Vectorization.hpp
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Kokkos_Vectorization.hpp
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/*
//@HEADER
// ************************************************************************
//
// Kokkos: Manycore Performance-Portable Multidimensional Arrays
// Copyright (2012) 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
*/
/// \file Kokkos_Vectorization.hpp
/// \brief Declaration and definition of Kokkos::Vectorization interface.
#ifndef KOKKOS_VECTORIZATION_HPP
#define KOKKOS_VECTORIZATION_HPP
#include <Kokkos_Macros.hpp>
#include <Kokkos_ExecPolicy.hpp>
namespace
Kokkos
{
template
<
class
Device
,
int
N
>
struct
Vectorization
{
typedef
Kokkos
::
TeamPolicy
<
Device
>
team_policy
;
typedef
typename
team_policy
::
member_type
team_member
;
enum
{
increment
=
1
};
KOKKOS_FORCEINLINE_FUNCTION
static
int
begin
()
{
return
0
;}
KOKKOS_FORCEINLINE_FUNCTION
static
int
thread_rank
(
const
team_member
&
dev
)
{
return
dev
.
team_rank
();
}
KOKKOS_FORCEINLINE_FUNCTION
static
int
team_rank
(
const
team_member
&
dev
)
{
return
dev
.
team_rank
()
/
increment
;
}
KOKKOS_FORCEINLINE_FUNCTION
static
int
team_size
(
const
team_member
&
dev
)
{
return
dev
.
team_size
()
/
increment
;
}
KOKKOS_FORCEINLINE_FUNCTION
static
int
global_thread_rank
(
const
team_member
&
dev
)
{
return
(
dev
.
league_rank
()
*
dev
.
team_size
()
+
dev
.
team_rank
());
}
KOKKOS_FORCEINLINE_FUNCTION
static
bool
is_lane_0
(
const
team_member
&
dev
)
{
return
true
;
}
template
<
class
Scalar
>
KOKKOS_FORCEINLINE_FUNCTION
static
Scalar
reduce
(
const
Scalar
&
val
)
{
return
val
;
}
};
}
#if defined( KOKKOS_HAVE_CUDA )
#include <Cuda/Kokkos_Cuda_Vectorization.hpp>
#endif
#endif
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