/usr/include/trilinos/KokkosExp_View_MP_Vector_Contiguous.hpp is in libtrilinos-stokhos-dev 12.10.1-3.
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//
// Stokhos Package
// Copyright (2009) Sandia Corporation
//
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//
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// 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
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//
// Questions? Contact Eric T. Phipps (etphipp@sandia.gov).
//
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// @HEADER
#ifndef KOKKOS_EXPERIMENTAL_VIEW_MP_VECTOR_CONTIGUOUS_HPP
#define KOKKOS_EXPERIMENTAL_VIEW_MP_VECTOR_CONTIGUOUS_HPP
#include "Sacado_Traits.hpp"
#include "Sacado_MP_Vector.hpp"
#include "Sacado_MP_VectorTraits.hpp"
#include "Kokkos_Core.hpp"
#include "Kokkos_View_Utils.hpp"
#include "Kokkos_View_MP_Vector_Utils.hpp"
#include "impl/KokkosExp_ViewMapping.hpp"
//----------------------------------------------------------------------------
namespace Kokkos {
namespace Experimental {
namespace Impl {
struct ViewMPVectorContiguous {};
template< class ... Args >
struct is_ViewMPVectorContiguous { enum { value = false }; };
template< class D , class ... P , class ... Args >
struct is_ViewMPVectorContiguous< Kokkos::View<D,P...> , Args... > {
enum { value =
std::is_same< typename Kokkos::ViewTraits<D,P...>::specialize
, ViewMPVectorContiguous >::value
&&
( ( sizeof...(Args) == 0 ) ||
is_ViewMPVectorContiguous< Args... >::value ) };
};
} // namespace Impl
} // namespace Experimental
} // namespace Kokkos
namespace Kokkos {
template <typename T, typename ... P>
struct is_view_mp_vector< View<T,P...> > {
typedef View<T,P...> view_type;
static const bool value =
std::is_same< typename view_type::specialize,
Experimental::Impl::ViewMPVectorContiguous >::value;
};
template <typename T, typename ... P>
KOKKOS_INLINE_FUNCTION
constexpr typename
std::enable_if< is_view_mp_vector< View<T,P...> >::value, unsigned >::type
dimension_scalar(const View<T,P...>& view) {
return view.implementation_map().dimension_scalar();
}
template <typename D, typename ... P>
struct FlatArrayType< View<D,P...>,
typename std::enable_if< is_view_mp_vector< View<D,P...> >::value >::type > {
typedef View<D,P...> view_type;
typedef typename view_type::traits::dimension dimension;
typedef typename view_type::array_type::value_type flat_value_type;
typedef typename Kokkos::Experimental::Impl::ViewDataType< flat_value_type , dimension >::type flat_data_type;
typedef View<flat_data_type,P...> type;
};
// Overload of deep_copy for MP::Vector views intializing to a constant scalar
template< class DT, class ... DP >
void deep_copy(
const View<DT,DP...> & view ,
const typename View<DT,DP...>::array_type::value_type & value
, typename std::enable_if<(
std::is_same< typename ViewTraits<DT,DP...>::specialize
, Kokkos::Experimental::Impl::ViewMPVectorContiguous >::value
)>::type * = 0 )
{
static_assert(
std::is_same< typename ViewTraits<DT,DP...>::value_type ,
typename ViewTraits<DT,DP...>::non_const_value_type >::value
, "Can only deep copy into non-const type" );
typedef typename FlatArrayType< View<DT,DP...> >::type flat_array_type;
Kokkos::Experimental::Impl::ViewFill< flat_array_type >( view , value );
}
// Overload of deep_copy for MP::Vector views intializing to a constant MP::Vector
template< class DT, class ... DP >
void deep_copy(
const View<DT,DP...> & view ,
const typename View<DT,DP...>::value_type & value
, typename std::enable_if<(
std::is_same< typename ViewTraits<DT,DP...>::specialize
, Kokkos::Experimental::Impl::ViewMPVectorContiguous >::value
)>::type * = 0 )
{
static_assert(
std::is_same< typename ViewTraits<DT,DP...>::value_type ,
typename ViewTraits<DT,DP...>::non_const_value_type >::value
, "Can only deep copy into non-const type" );
// static_assert(
// Sacado::StaticSize< typename View<DT,DP...>::value_type >::value
// ||
// std::is_same< Kokkos::Impl::ActiveExecutionMemorySpace
// , Kokkos::HostSpace >::value
// , "Deep copy from a FAD type must be statically sized or host space" );
Kokkos::Experimental::Impl::ViewFill< View<DT,DP...> >( view , value );
}
/* Specialize for deep copy of MP::Vector */
template< class DT , class ... DP , class ST , class ... SP >
inline
void deep_copy( const View<DT,DP...> & dst ,
const View<ST,SP...> & src
, typename std::enable_if<(
std::is_same< typename ViewTraits<DT,DP...>::specialize
, Kokkos::Experimental::Impl::ViewMPVectorContiguous >::value
&&
std::is_same< typename ViewTraits<ST,SP...>::specialize
, Kokkos::Experimental::Impl::ViewMPVectorContiguous >::value
)>::type * = 0 )
{
static_assert(
std::is_same< typename ViewTraits<DT,DP...>::value_type ,
typename ViewTraits<DT,DP...>::non_const_value_type >::value
, "Deep copy destination must be non-const" );
static_assert(
( unsigned(ViewTraits<DT,DP...>::rank) ==
unsigned(ViewTraits<ST,SP...>::rank) )
, "Deep copy destination and source must have same rank" );
// Note ETP 09/29/2016: Use FlatArrayType instead of array_type to work
// around issue where dst and src are rank-1, but have differing layouts.
// Kokkos' deep_copy() doesn't work in this case because the array_type
// will be rank-2. It should be possible to make deep_copy() work there,
// but this seems easier.
// Kokkos::deep_copy(
// typename View<DT,DP...>::array_type( dst ) ,
// typename View<ST,SP...>::array_type( src ) );
Kokkos::deep_copy(
typename FlatArrayType< View<DT,DP...> >::type( dst ) ,
typename FlatArrayType< View<ST,SP...> >::type( src ) );
}
} // namespace Kokkos
//----------------------------------------------------------------------------
namespace Kokkos {
namespace Experimental {
namespace Impl {
template< class DataType , class ArrayLayout , typename StorageType >
struct ViewDataAnalysis< DataType /* Original view data type */
, ArrayLayout
, Sacado::MP::Vector< StorageType > >
{
private:
typedef typename StorageType::value_type ScalarType;
typedef ViewArrayAnalysis< DataType > array_analysis ;
static const int DimVector = StorageType::static_size;
public:
// Specialized view data mapping:
typedef ViewMPVectorContiguous specialize ;
typedef typename array_analysis::dimension dimension ;
typedef typename array_analysis::value_type value_type ;
typedef typename array_analysis::const_value_type const_value_type ;
typedef typename array_analysis::non_const_value_type non_const_value_type ;
// Generate analogous multidimensional array specification type.
typedef typename
ViewDataType< value_type , dimension >::type type ;
typedef typename
ViewDataType< const_value_type , dimension >::type const_type ;
typedef typename
ViewDataType< non_const_value_type , dimension >::type non_const_type ;
private:
// A const ?
enum { is_const = std::is_same< value_type , const_value_type >::value };
// The unwrapped scalar types:
typedef typename
std::conditional< is_const , const ScalarType , ScalarType >::type
scalar_type ;
typedef ScalarType non_const_scalar_type ;
typedef const ScalarType const_scalar_type ;
// Prepend or append the vector dimension based on ArrayLayout
// Note: you can't prepend a static dimension, so use 0 for LayoutLeft
typedef typename array_analysis::dimension::
template prepend<0>::type
prepend_scalar_dimension ;
typedef typename array_analysis::dimension::
template append<DimVector>::type
append_scalar_dimension ;
typedef typename std::conditional<
std::is_same< ArrayLayout, Kokkos::LayoutLeft>::value,
prepend_scalar_dimension,
append_scalar_dimension >::type scalar_dimension;
public:
// Generate "flattened" multidimensional array specification type.
typedef typename
ViewDataType< scalar_type , scalar_dimension >::type scalar_array_type ;
typedef typename
ViewDataType< const_scalar_type , scalar_dimension >::type
const_scalar_array_type ;
typedef typename
ViewDataType< non_const_scalar_type , scalar_dimension >::type
non_const_scalar_array_type ;
};
} // namespace Impl
} // namespace Experimental
} // namespace Kokkos
//----------------------------------------------------------------------------
namespace Kokkos {
namespace Experimental {
namespace Impl {
template < class ValueType,
bool is_static = Sacado::IsStaticallySized<ValueType>::value >
struct MPVectorAllocation;
// MP::Vector allocation for statically-sized MP::Vector types.
// In this case we can reinterpret cast directly between pointers of types
// MP::Vector<Storage> and MP::Vector<Storage>::value_type.
template <class ValueType>
struct MPVectorAllocation<ValueType, true> {
typedef ValueType value_type;
typedef typename Sacado::ValueType<value_type>::type scalar_type;
value_type * value_ptr;
scalar_type * scalar_ptr;
KOKKOS_INLINE_FUNCTION
static constexpr size_t
memory_span(const size_t span, const unsigned vector_size) {
return span * vector_size * sizeof(scalar_type);
}
KOKKOS_INLINE_FUNCTION
MPVectorAllocation() : value_ptr(0), scalar_ptr(0) {}
template <typename T>
KOKKOS_INLINE_FUNCTION
MPVectorAllocation& operator=(const MPVectorAllocation<T,true>& a) {
value_ptr = a.value_ptr;
scalar_ptr = a.scalar_ptr;
return *this;
}
KOKKOS_INLINE_FUNCTION
void set(value_type* ptr, const size_t span, const unsigned vector_size) {
value_ptr = ptr;
scalar_ptr = reinterpret_cast<scalar_type*>(ptr);
}
template <class ExecSpace>
struct ConstructDestructFunctor {
typedef ViewValueFunctor< ExecSpace, scalar_type > FunctorType ;
FunctorType m_functor;
bool m_initialize;
ConstructDestructFunctor() = default;
ConstructDestructFunctor(const ConstructDestructFunctor&) = default;
ConstructDestructFunctor& operator=(const ConstructDestructFunctor&) = default;
ConstructDestructFunctor(const ExecSpace & space,
const bool initialize,
const size_t span,
const unsigned vector_size,
scalar_type* scalar_ptr) :
m_functor( space , scalar_ptr , span*vector_size ),
m_initialize(initialize) {}
inline void construct_shared_allocation() {
if (m_initialize)
m_functor.construct_shared_allocation();
}
inline void destroy_shared_allocation() {
if (m_initialize)
m_functor.destroy_shared_allocation();
}
};
template <class ExecSpace>
inline ConstructDestructFunctor<ExecSpace>
create_functor(const ExecSpace & space,
const bool initialize,
const size_t span,
const unsigned vector_size) const {
return ConstructDestructFunctor<ExecSpace>(space, initialize, span, vector_size, scalar_ptr);
}
// Assign scalar_type pointer to give ptr
template <typename T>
void assign(T * ptr) {
value_ptr = reinterpret_cast<value_type*>(ptr);
scalar_ptr = reinterpret_cast<scalar_type*>(ptr);
}
};
// MP::Vector allocation for dynamically-sized MP::Vector types.
// In this case we allocate two chunks of data, the first for the the
// MP::Vector<Storage> itself and then for the underlying scalar type
// (MP::Vector<Storage>::value_type). The memory is laid out with the
// former followed by the latter.
template <class ValueType>
struct MPVectorAllocation<ValueType, false> {
typedef ValueType value_type;
typedef typename Sacado::ValueType<value_type>::type scalar_type;
value_type * value_ptr;
scalar_type * scalar_ptr;
KOKKOS_INLINE_FUNCTION
static constexpr size_t
memory_span(const size_t span, const unsigned vector_size) {
return span * ( vector_size * sizeof(scalar_type) + sizeof(value_type) );
}
KOKKOS_INLINE_FUNCTION
MPVectorAllocation() : value_ptr(0), scalar_ptr(0) {}
template <typename T>
KOKKOS_INLINE_FUNCTION
MPVectorAllocation& operator=(const MPVectorAllocation<T,false>& a) {
value_ptr = a.value_ptr;
scalar_ptr = a.scalar_ptr;
return *this;
}
// We are making an assumption the data is laid out as described above,
// which in general may not be true if the view is created from memory
// allocated elsewhere. We should check for that.
KOKKOS_INLINE_FUNCTION
void set(value_type* ptr, const size_t span, const unsigned vector_size) {
value_ptr = ptr;
scalar_ptr = reinterpret_cast<scalar_type*>(ptr+span);
}
template <class ExecSpace>
struct VectorConstruct {
ExecSpace m_space;
value_type* m_p;
scalar_type* m_sp;
size_t m_span;
unsigned m_vector_size;
VectorConstruct() = default;
VectorConstruct(const VectorConstruct&) = default;
VectorConstruct& operator=(const VectorConstruct&) = default;
inline
VectorConstruct(const ExecSpace& space,
value_type* p,
scalar_type* sp,
const size_t span,
const unsigned vector_size) :
m_space(space), m_p(p), m_sp(sp), m_span(span), m_vector_size(vector_size) {}
inline void execute() {
if ( ! m_space.in_parallel() ) {
typedef Kokkos::RangePolicy< ExecSpace > PolicyType ;
const Kokkos::Impl::ParallelFor< VectorConstruct , PolicyType >
closure( *this , PolicyType( 0 , m_span ) );
closure.execute();
m_space.fence();
}
else {
for ( size_t i = 0 ; i < m_span ; ++i ) operator()(i);
}
}
KOKKOS_INLINE_FUNCTION
void operator() (const size_t i) const {
new (m_p+i) value_type(m_vector_size, m_sp+i*m_vector_size, false);
}
};
template <class ExecSpace>
struct ConstructDestructFunctor {
typedef ViewValueFunctor< ExecSpace, scalar_type > ScalarFunctorType ;
typedef VectorConstruct< ExecSpace > VectorFunctorType ;
ScalarFunctorType m_scalar_functor;
VectorFunctorType m_vector_functor;
bool m_initialize;
ConstructDestructFunctor() = default;
ConstructDestructFunctor(const ConstructDestructFunctor&) = default;
ConstructDestructFunctor& operator=(const ConstructDestructFunctor&) = default;
ConstructDestructFunctor(const ExecSpace & space,
const bool initialize,
const size_t span,
const unsigned vector_size,
scalar_type* scalar_ptr,
value_type* value_ptr) :
m_scalar_functor( space , scalar_ptr , span*vector_size ),
m_vector_functor( space , value_ptr , scalar_ptr , span , vector_size ),
m_initialize(initialize) {}
inline void construct_shared_allocation() {
// First initialize the scalar_type array
if (m_initialize)
m_scalar_functor.construct_shared_allocation();
// Construct each MP::Vector using memory in scalar_ptr array,
// setting pointer to MP::Vector values from values array
// Equivalent to:
// value_type* p = value_ptr;
// scalar_type* sp = scalar_ptr;
// for (size_t i=0; i<span; ++i) {
// new (p++) value_type(vector_size, sp, false);
// sp += vector_size;
// }
// (we always need to do this, regardless of initialization)
m_vector_functor.execute();
}
inline void destroy_shared_allocation() {
// We only need to (possibly) call the destructor on values in the
// scalar_type array, since the value_type array is a view into it
if (m_initialize)
m_scalar_functor.destroy_shared_allocation();
}
};
template <class ExecSpace>
inline ConstructDestructFunctor<ExecSpace>
create_functor(const ExecSpace & space,
const bool initialize,
const size_t span,
const unsigned vector_size) const {
return ConstructDestructFunctor<ExecSpace>(space, initialize, span, vector_size, scalar_ptr, value_ptr);
}
// Assign scalar_type pointer to give ptr
// This makes BIG assumption on how the data was allocated
template <typename T>
void assign(T * ptr) {
value_ptr = reinterpret_cast<value_type*>(ptr);
if (ptr != 0)
scalar_ptr = value_ptr->coeff();
else
scalar_ptr = 0;
}
};
template< class Traits >
class ViewMapping< Traits , /* View internal mapping */
typename std::enable_if<
( std::is_same< typename Traits::specialize
, ViewMPVectorContiguous >::value
&&
( std::is_same< typename Traits::array_layout
, Kokkos::LayoutLeft >::value
||
std::is_same< typename Traits::array_layout
, Kokkos::LayoutRight >::value
||
std::is_same< typename Traits::array_layout
, Kokkos::LayoutStride >::value
)
)>::type >
{
private:
template< class , class ... > friend class ViewMapping ;
template< class , class ... > friend class Kokkos::Experimental::View ;
typedef typename Traits::value_type sacado_mp_vector_type ;
typedef typename sacado_mp_vector_type::storage_type stokhos_storage_type ;
typedef typename stokhos_storage_type::value_type intrinsic_scalar_type ;
typedef typename
std::add_const< intrinsic_scalar_type >::type const_intrinsic_scalar_type ;
enum { StokhosStorageStaticDimension = stokhos_storage_type::static_size };
typedef Sacado::integral_nonzero< unsigned , StokhosStorageStaticDimension > sacado_size_type;
typedef Impl::MPVectorAllocation<sacado_mp_vector_type> handle_type;
typedef ViewOffset< typename Traits::dimension
, typename Traits::array_layout
, void
> offset_type ;
// Prepend or append the vector dimension based on array_layout
// Note: you can't prepend a static dimension, so use 0 for LayoutLeft
typedef ViewArrayAnalysis< typename Traits::data_type > array_analysis ;
typedef typename array_analysis::dimension array_dimension;
typedef ViewOffset< typename array_dimension::
template append<StokhosStorageStaticDimension>::type,
typename Traits::array_layout,
void
> append_offset_type ;
typedef ViewOffset< typename array_dimension::
template prepend<0>::type,
typename Traits::array_layout,
void
> prepend_offset_type ;
typedef typename std::conditional<
std::is_same< typename Traits::array_layout, Kokkos::LayoutLeft>::value,
prepend_offset_type,
append_offset_type >::type array_offset_type;
handle_type m_handle ;
offset_type m_offset ;
unsigned m_stride ;
sacado_size_type m_sacado_size ; // Size of sacado dimension
// Note: if the view is partitioned, m_sacado_size is not the stride in
// memory between consecutive MP::Vector entries for given vector index:
//
// original_sacado_size = m_stride * m_sacado_size
// m_stride = 1 for original allocation.
//
// Stride here has a slightly different meaning than in the standard
// View implementation. For the moment we are assuming no padding within
// the view array itself and stride is to allow for partitioning the view
// by dividing up the scalar type.
//
// I suspect we could combine this with the way the stride is managed in
// the default view, in which case, I don't think we even need a
// specialization
//
// For reshaping by folding the sacado dimension into its next adjacent
// dimension, padding wouldn't generally work. So unless there becomes
// a way to turn padding off in the default view, a specialization
// will be necessary.
public:
//----------------------------------------
// Domain dimensions
enum { Rank = Traits::dimension::rank };
// Rank corresponding to the sacado dimension
enum { Sacado_Rank = std::is_same< typename Traits::array_layout, Kokkos::LayoutLeft >::value ? 0 : Rank+1 };
// Using the internal offset mapping so limit to public rank:
template< typename iType >
KOKKOS_INLINE_FUNCTION constexpr size_t extent( const iType & r ) const
{ return m_offset.m_dim.extent(r); }
KOKKOS_INLINE_FUNCTION constexpr
typename Traits::array_layout layout() const
{ return m_offset.layout(); }
KOKKOS_INLINE_FUNCTION constexpr size_t dimension_0() const
{ return m_offset.dimension_0(); }
KOKKOS_INLINE_FUNCTION constexpr size_t dimension_1() const
{ return m_offset.dimension_1(); }
KOKKOS_INLINE_FUNCTION constexpr size_t dimension_2() const
{ return m_offset.dimension_2(); }
KOKKOS_INLINE_FUNCTION constexpr size_t dimension_3() const
{ return m_offset.dimension_3(); }
KOKKOS_INLINE_FUNCTION constexpr size_t dimension_4() const
{ return m_offset.dimension_4(); }
KOKKOS_INLINE_FUNCTION constexpr size_t dimension_5() const
{ return m_offset.dimension_5(); }
KOKKOS_INLINE_FUNCTION constexpr size_t dimension_6() const
{ return m_offset.dimension_6(); }
KOKKOS_INLINE_FUNCTION constexpr size_t dimension_7() const
{ return m_offset.dimension_7(); }
// Is a regular layout with uniform striding for each index.
// Since we all for striding within the data type, we can't guarantee
// regular striding
using is_regular = std::false_type ;
// FIXME: Adjust these for m_stride
KOKKOS_INLINE_FUNCTION constexpr size_t stride_0() const
{ return m_offset.stride_0(); }
KOKKOS_INLINE_FUNCTION constexpr size_t stride_1() const
{ return m_offset.stride_1(); }
KOKKOS_INLINE_FUNCTION constexpr size_t stride_2() const
{ return m_offset.stride_2(); }
KOKKOS_INLINE_FUNCTION constexpr size_t stride_3() const
{ return m_offset.stride_3(); }
KOKKOS_INLINE_FUNCTION constexpr size_t stride_4() const
{ return m_offset.stride_4(); }
KOKKOS_INLINE_FUNCTION constexpr size_t stride_5() const
{ return m_offset.stride_5(); }
KOKKOS_INLINE_FUNCTION constexpr size_t stride_6() const
{ return m_offset.stride_6(); }
KOKKOS_INLINE_FUNCTION constexpr size_t stride_7() const
{ return m_offset.stride_7(); }
template< typename iType >
KOKKOS_INLINE_FUNCTION void stride( iType * const s ) const
{ m_offset.stride(s); }
// Size of sacado scalar dimension
KOKKOS_FORCEINLINE_FUNCTION constexpr unsigned dimension_scalar() const
{ return m_sacado_size.value; }
// Whether the storage type is statically sized
static const bool is_static = stokhos_storage_type::is_static ;
// Whether sacado dimension is contiguous
static const bool is_contiguous = true;
//----------------------------------------
// Range of mapping
// Return type of reference operators
typedef sacado_mp_vector_type & reference_type ;
/** \brief Pointer to underlying memory type */
typedef sacado_mp_vector_type * pointer_type ;
/** \brief Span of the mapped range : [ data() .. data() + span() ) */
KOKKOS_INLINE_FUNCTION constexpr size_t span() const
{ return m_offset.span(); }
/** \brief Is the mapped range span contiguous */
KOKKOS_INLINE_FUNCTION constexpr bool span_is_contiguous() const
{ return m_offset.span_is_contiguous() && (m_stride == 1); }
/** \brief Raw data access */
KOKKOS_INLINE_FUNCTION constexpr pointer_type data() const
{ return m_handle.value_ptr ; }
//----------------------------------------
KOKKOS_FORCEINLINE_FUNCTION
reference_type reference() const
{ return *m_handle.value_ptr; }
// FIXME: Check this
template< typename I0 >
KOKKOS_FORCEINLINE_FUNCTION
typename
std::enable_if< std::is_integral<I0>::value &&
! std::is_same< typename Traits::array_layout , Kokkos::LayoutStride >::value
, reference_type >::type
reference( const I0 & i0 ) const
{ return m_handle.value_ptr[m_stride * i0]; }
// FIXME: Check this
template< typename I0 >
KOKKOS_FORCEINLINE_FUNCTION
typename
std::enable_if< std::is_integral<I0>::value &&
std::is_same< typename Traits::array_layout , Kokkos::LayoutStride >::value
, reference_type >::type
reference( const I0 & i0 ) const
{ return m_handle.value_ptr[ m_stride * m_offset(i0) ]; }
template< typename I0 , typename I1 >
KOKKOS_FORCEINLINE_FUNCTION
reference_type reference( const I0 & i0 , const I1 & i1 ) const
{ return m_handle.value_ptr[ m_stride * m_offset(i0,i1) ]; }
template< typename I0 , typename I1 , typename I2 >
KOKKOS_FORCEINLINE_FUNCTION
reference_type reference( const I0 & i0 , const I1 & i1 , const I2 & i2 ) const
{ return m_handle.value_ptr[ m_stride * m_offset(i0,i1,i2) ]; }
template< typename I0 , typename I1 , typename I2 , typename I3 >
KOKKOS_FORCEINLINE_FUNCTION
reference_type reference( const I0 & i0 , const I1 & i1 , const I2 & i2 , const I3 & i3 ) const
{ return m_handle.value_ptr[ m_stride * m_offset(i0,i1,i2,i3) ]; }
template< typename I0 , typename I1 , typename I2 , typename I3
, typename I4 >
KOKKOS_FORCEINLINE_FUNCTION
reference_type reference( const I0 & i0 , const I1 & i1 , const I2 & i2 , const I3 & i3
, const I4 & i4 ) const
{ return m_handle.value_ptr[ m_stride * m_offset(i0,i1,i2,i3,i4) ]; }
template< typename I0 , typename I1 , typename I2 , typename I3
, typename I4 , typename I5 >
KOKKOS_FORCEINLINE_FUNCTION
reference_type reference( const I0 & i0 , const I1 & i1 , const I2 & i2 , const I3 & i3
, const I4 & i4 , const I5 & i5 ) const
{ return m_handle.value_ptr[ m_stride * m_offset(i0,i1,i2,i3,i4,i5) ]; }
template< typename I0 , typename I1 , typename I2 , typename I3
, typename I4 , typename I5 , typename I6 >
KOKKOS_FORCEINLINE_FUNCTION
reference_type reference( const I0 & i0 , const I1 & i1 , const I2 & i2 , const I3 & i3
, const I4 & i4 , const I5 & i5 , const I6 & i6 ) const
{ return m_handle.value_ptr[ m_stride * m_offset(i0,i1,i2,i3,i4,i5,i6) ]; }
template< typename I0 , typename I1 , typename I2 , typename I3
, typename I4 , typename I5 , typename I6 , typename I7 >
KOKKOS_FORCEINLINE_FUNCTION
reference_type reference( const I0 & i0 , const I1 & i1 , const I2 & i2 , const I3 & i3
, const I4 & i4 , const I5 & i5 , const I6 & i6 , const I7 & i7 ) const
{ return m_handle.value_ptr[ m_stride * m_offset(i0,i1,i2,i3,i4,i5,i6,i7) ]; }
//----------------------------------------
/** \brief Span, in bytes, of the required memory */
KOKKOS_INLINE_FUNCTION
static size_t memory_span( typename Traits::array_layout const & layout )
{
// Do not introduce padding...
typedef std::integral_constant< unsigned , 0 > padding ;
offset_type offset( padding(), layout );
sacado_size_type sacado_size =
Kokkos::Impl::GetSacadoSize<unsigned(Rank)>::eval(layout);
return handle_type::memory_span( offset.span(), sacado_size.value );
}
//----------------------------------------
KOKKOS_INLINE_FUNCTION ~ViewMapping() = default ;
KOKKOS_INLINE_FUNCTION ViewMapping() :
m_handle(),
m_offset(),
m_stride(1),
m_sacado_size(0)
{}
KOKKOS_INLINE_FUNCTION ViewMapping( const ViewMapping & ) = default ;
KOKKOS_INLINE_FUNCTION ViewMapping & operator = ( const ViewMapping & ) = default ;
KOKKOS_INLINE_FUNCTION ViewMapping( ViewMapping && ) = default ;
KOKKOS_INLINE_FUNCTION ViewMapping & operator = ( ViewMapping && ) = default ;
template< class ... P >
KOKKOS_INLINE_FUNCTION
ViewMapping
( ViewCtorProp< P ... > const & prop
, typename Traits::array_layout const & layout
)
: m_handle()
, m_offset( std::integral_constant< unsigned , 0 >()
, layout )
, m_stride( 1 )
, m_sacado_size( Kokkos::Impl::GetSacadoSize<unsigned(Rank)>::eval(layout) )
{
m_handle.set( ( (ViewCtorProp<void,pointer_type> const &) prop ).value,
m_offset.span(), m_sacado_size.value );
}
//----------------------------------------
/* Allocate and construct mapped array.
* Allocate via shared allocation record and
* return that record for allocation tracking.
*/
template< class ... P >
SharedAllocationRecord<> *
allocate_shared( ViewCtorProp< P... > const & prop
, typename Traits::array_layout const & layout )
{
typedef ViewCtorProp< P... > ctor_prop ;
typedef typename ctor_prop::execution_space execution_space ;
typedef typename Traits::memory_space memory_space ;
typedef typename handle_type::template ConstructDestructFunctor<execution_space> functor_type ;
typedef SharedAllocationRecord< memory_space , functor_type > record_type ;
// Disallow padding
typedef std::integral_constant< unsigned , 0 > padding ;
m_offset = offset_type( padding(), layout );
m_stride = 1;
m_sacado_size = Kokkos::Impl::GetSacadoSize<unsigned(Rank)>::eval(layout);
const size_t alloc_size =
handle_type::memory_span( m_offset.span(), m_sacado_size.value );
// Create shared memory tracking record with allocate memory from the memory space
record_type * const record =
record_type::allocate( ( (ViewCtorProp<void,memory_space> const &) prop ).value
, ( (ViewCtorProp<void,std::string> const &) prop ).value
, alloc_size );
// Only set the the pointer and initialize if the allocation is non-zero.
// May be zero if one of the dimensions is zero.
if ( alloc_size ) {
m_handle.set( reinterpret_cast< pointer_type >( record->data() ),
m_offset.span(), m_sacado_size.value );
// Assume destruction is only required when construction is requested.
// The ViewValueFunctor has both value construction and destruction operators.
record->m_destroy = m_handle.create_functor(
( (ViewCtorProp<void,execution_space> const &) prop).value
, ctor_prop::initialize
, m_offset.span()
, m_sacado_size.value );
// Construct values
record->m_destroy.construct_shared_allocation();
}
return record ;
}
//----------------------------------------
// If the View is to construct or destroy the elements.
/*
template< class ExecSpace >
void construct( const ExecSpace & space ) const
{
m_handle.construct( space, m_offset.span(), m_sacado_size.value );
}
template< class ExecSpace >
void destroy( const ExecSpace & space ) const
{
m_handle.destruct( space, m_offset.span(), m_sacado_size.value );
}
*/
};
} // namespace Impl
} // namespace Experimental
} // namespace Kokkos
//----------------------------------------------------------------------------
namespace Kokkos {
namespace Experimental {
namespace Impl {
/**\brief Assign compatible Sacado::MP::Vector view mappings.
*
* View<MP::Vector> = View<MP::Vector>
*/
template< class DstTraits , class SrcTraits >
class ViewMapping< DstTraits , SrcTraits ,
typename std::enable_if<(
std::is_same< typename DstTraits::memory_space
, typename SrcTraits::memory_space >::value
&&
// Destination view has MP::Vector
std::is_same< typename DstTraits::specialize
, ViewMPVectorContiguous >::value
&&
// Source view has MP::Vector only
std::is_same< typename SrcTraits::specialize
, ViewMPVectorContiguous >::value
)>::type >
{
public:
enum { is_assignable = true };
typedef Kokkos::Experimental::Impl::SharedAllocationTracker TrackType ;
typedef ViewMapping< DstTraits , void > DstType ;
typedef ViewMapping< SrcTraits , void > SrcType ;
KOKKOS_INLINE_FUNCTION static
void assign( DstType & dst
, const SrcType & src
, const TrackType & )
{
static_assert(
(
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutLeft >::value ||
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutRight >::value ||
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutStride >::value
)
&&
(
std::is_same< typename SrcTraits::array_layout
, Kokkos::LayoutLeft >::value ||
std::is_same< typename SrcTraits::array_layout
, Kokkos::LayoutRight >::value ||
std::is_same< typename SrcTraits::array_layout
, Kokkos::LayoutStride >::value
)
, "View of MP::Vector requires LayoutLeft, LayoutRight, or LayoutStride" );
static_assert(
std::is_same< typename DstTraits::array_layout
, typename SrcTraits::array_layout >::value ||
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutStride >::value ||
( unsigned(DstTraits::rank) == 1 && unsigned(SrcTraits::rank) == 1 ) ,
"View assignment must have compatible layout" );
static_assert(
std::is_same< typename DstTraits::value_type
, typename SrcTraits::value_type >::value ||
std::is_same< typename DstTraits::value_type
, typename SrcTraits::const_value_type >::value ,
"View assignment must have same value type or const = non-const" );
static_assert(
ViewDimensionAssignable
< typename DstType::offset_type::dimension_type
, typename SrcType::offset_type::dimension_type >::value ,
"View assignment must have compatible dimensions" );
dst.m_handle = src.m_handle ;
dst.m_offset = src.m_offset ;
dst.m_stride = src.m_stride ;
dst.m_sacado_size = src.m_sacado_size ;
}
};
/**\brief Assign compatible Sacado::MP::Vector view mappings.
*
* View<ordinary> = View<MP::Vector>
* where View<ordinay>::Rank = View<MP::Vector>::Rank+1
*/
template< class DstTraits , class SrcTraits >
class ViewMapping< DstTraits , SrcTraits ,
typename std::enable_if<(
std::is_same< typename DstTraits::memory_space
, typename SrcTraits::memory_space >::value
&&
// Destination view has ordinary
std::is_same< typename DstTraits::specialize , void >::value
&&
// Source view has MP::Vector only
std::is_same< typename SrcTraits::specialize
, ViewMPVectorContiguous >::value
&&
// Ranks match
unsigned(DstTraits::dimension::rank) == unsigned(SrcTraits::dimension::rank)+1
)>::type >
{
public:
enum { is_assignable = true };
typedef Kokkos::Experimental::Impl::SharedAllocationTracker TrackType ;
typedef ViewMapping< DstTraits , void > DstType ;
typedef ViewMapping< SrcTraits , void > SrcType ;
KOKKOS_INLINE_FUNCTION static
void assign( DstType & dst
, const SrcType & src
, const TrackType & )
{
static_assert(
(
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutLeft >::value ||
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutRight >::value ||
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutStride >::value
)
&&
(
std::is_same< typename SrcTraits::array_layout
, Kokkos::LayoutLeft >::value ||
std::is_same< typename SrcTraits::array_layout
, Kokkos::LayoutRight >::value ||
std::is_same< typename SrcTraits::array_layout
, Kokkos::LayoutStride >::value
)
, "View of MP::Vector requires LayoutLeft, LayoutRight, or LayoutStride" );
static_assert(
std::is_same< typename DstTraits::array_layout
, typename SrcTraits::array_layout >::value ||
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutStride >::value ,
"View assignment must have compatible layout" );
static_assert(
std::is_same< typename DstTraits::scalar_array_type
, typename SrcTraits::scalar_array_type >::value ||
std::is_same< typename DstTraits::scalar_array_type
, typename SrcTraits::const_scalar_array_type >::value ,
"View assignment must have same value type or const = non-const" );
static_assert(
ViewDimensionAssignable<
typename DstType::offset_type::dimension_type,
typename SrcType::array_offset_type::dimension_type >::value,
"View assignment must have compatible dimensions" );
if ( src.m_stride != 1 ) {
Kokkos::abort("\n\n ****** Kokkos::View< Sacado::MP::Vector ... > cannot assign with non-unit stride ******\n\n");
}
unsigned dims[8];
dims[0] = src.m_offset.dimension_0();
dims[1] = src.m_offset.dimension_1();
dims[2] = src.m_offset.dimension_2();
dims[3] = src.m_offset.dimension_3();
dims[4] = src.m_offset.dimension_4();
dims[5] = src.m_offset.dimension_5();
dims[6] = src.m_offset.dimension_6();
dims[7] = src.m_offset.dimension_7();
unsigned rank = SrcTraits::dimension::rank;
unsigned sacado_size = src.m_sacado_size.value;
if (std::is_same<typename SrcTraits::array_layout, LayoutLeft>::value) {
// Move sacado_size to the first dimension, shift all others up one
for (unsigned i=rank; i>0; --i)
dims[i] = dims[i-1];
dims[0] = sacado_size;
}
else {
dims[rank] = sacado_size;
}
typedef typename DstType::offset_type dst_offset_type;
dst.m_offset = dst_offset_type( std::integral_constant< unsigned , 0 >(),
typename DstTraits::array_layout(
dims[0] , dims[1] , dims[2] , dims[3] ,
dims[4] , dims[5] , dims[6] , dims[7] ) );
dst.m_handle = src.m_handle.scalar_ptr ;
}
};
/**\brief Assign compatible Sacado::MP::Vector view mappings.
*
* View<ordinary> = View<MP::Vector>
* where View<ordinay>::Rank = View<MP::Vector>::Rank, i.e., assigning
* to the "flattened" view type
*/
template< class DstTraits , class SrcTraits >
class ViewMapping< DstTraits , SrcTraits ,
typename std::enable_if<(
std::is_same< typename DstTraits::memory_space
, typename SrcTraits::memory_space >::value
&&
// Destination view has ordinary
std::is_same< typename DstTraits::specialize , void >::value
&&
// Source view has MP::Vector only
std::is_same< typename SrcTraits::specialize
, ViewMPVectorContiguous >::value
&&
// Ranks match
unsigned(DstTraits::dimension::rank) == unsigned(SrcTraits::dimension::rank)
)>::type >
{
public:
enum { is_assignable = true };
typedef Kokkos::Experimental::Impl::SharedAllocationTracker TrackType ;
typedef ViewMapping< DstTraits , void > DstType ;
typedef ViewMapping< SrcTraits , void > SrcType ;
KOKKOS_INLINE_FUNCTION static
void assign( DstType & dst
, const SrcType & src
, const TrackType & )
{
static_assert(
(
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutLeft >::value ||
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutRight >::value ||
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutStride >::value
)
&&
(
std::is_same< typename SrcTraits::array_layout
, Kokkos::LayoutLeft >::value ||
std::is_same< typename SrcTraits::array_layout
, Kokkos::LayoutRight >::value ||
std::is_same< typename SrcTraits::array_layout
, Kokkos::LayoutStride >::value
)
, "View of MP::Vector requires LayoutLeft, LayoutRight, or LayoutStride" );
static_assert(
std::is_same< typename DstTraits::array_layout
, typename SrcTraits::array_layout >::value ||
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutStride >::value ,
"View assignment must have compatible layout" );
static_assert(
std::is_same< typename DstTraits::value_type
, typename SrcTraits::non_const_value_type::value_type >::value ||
std::is_same< typename DstTraits::value_type
, const typename SrcTraits::non_const_value_type::value_type >::value ,
"View assignment must have same value type or const = non-const" );
static_assert(
ViewDimensionAssignable<
typename DstType::offset_type::dimension_type,
typename SrcType::offset_type::dimension_type >::value,
"View assignment must have compatible dimensions" );
if ( src.m_stride != 1 ) {
Kokkos::abort("\n\n ****** Kokkos::View< Sacado::MP::Vector ... > cannot assign with non-unit stride ******\n\n");
}
unsigned dims[8];
dims[0] = src.m_offset.dimension_0();
dims[1] = src.m_offset.dimension_1();
dims[2] = src.m_offset.dimension_2();
dims[3] = src.m_offset.dimension_3();
dims[4] = src.m_offset.dimension_4();
dims[5] = src.m_offset.dimension_5();
dims[6] = src.m_offset.dimension_6();
dims[7] = src.m_offset.dimension_7();
unsigned rank = SrcTraits::dimension::rank;
unsigned sacado_size = src.m_sacado_size.value;
if (std::is_same<typename DstTraits::array_layout, LayoutLeft>::value) {
dims[0] = dims[0]*sacado_size;
dims[rank] = 0;
}
else {
dims[rank-1] = dims[rank-1]*sacado_size;
dims[rank] = 0;
}
typedef typename DstType::offset_type dst_offset_type;
dst.m_offset = dst_offset_type( std::integral_constant< unsigned , 0 >(),
typename DstTraits::array_layout(
dims[0] , dims[1] , dims[2] , dims[3] ,
dims[4] , dims[5] , dims[6] , dims[7] ) );
dst.m_handle = src.m_handle.scalar_ptr ;
}
};
} // namespace Impl
} // namespace Experimental
} // namespace Kokkos
//----------------------------------------------------------------------------
namespace Kokkos {
namespace Experimental {
namespace Impl {
// Subview mapping
template< class DataType, class ... P , class Arg0, class ... Args >
struct ViewMapping
< typename std::enable_if<(
// Source view has MP::Vector only
std::is_same< typename Kokkos::Experimental::ViewTraits<DataType,P...>::specialize
, ViewMPVectorContiguous >::value
&&
(
std::is_same< typename Kokkos::Experimental::ViewTraits<DataType,P...>::array_layout
, Kokkos::LayoutLeft >::value ||
std::is_same< typename Kokkos::Experimental::ViewTraits<DataType,P...>::array_layout
, Kokkos::LayoutRight >::value ||
std::is_same< typename Kokkos::Experimental::ViewTraits<DataType,P...>::array_layout
, Kokkos::LayoutStride >::value
)
&& !Sacado::MP::is_vector_partition<Arg0>::value
)>::type
, Kokkos::Experimental::ViewTraits<DataType,P...>
, Arg0, Args ... >
{
private:
typedef Kokkos::Experimental::ViewTraits<DataType,P...> SrcTraits;
//static_assert( SrcTraits::rank == sizeof...(Args) , "" );
enum
{ RZ = false
, R0 = bool(is_integral_extent<0,Arg0,Args...>::value)
, R1 = bool(is_integral_extent<1,Arg0,Args...>::value)
, R2 = bool(is_integral_extent<2,Arg0,Args...>::value)
, R3 = bool(is_integral_extent<3,Arg0,Args...>::value)
, R4 = bool(is_integral_extent<4,Arg0,Args...>::value)
, R5 = bool(is_integral_extent<5,Arg0,Args...>::value)
, R6 = bool(is_integral_extent<6,Arg0,Args...>::value)
};
// Public rank
enum { rank = unsigned(R0) + unsigned(R1) + unsigned(R2) + unsigned(R3)
+ unsigned(R4) + unsigned(R5) + unsigned(R6) };
// Whether right-most non-MP::Vector rank is a range.
enum { R0_rev = ( 0 == SrcTraits::rank ? RZ : (
1 == SrcTraits::rank ? R0 : (
2 == SrcTraits::rank ? R1 : (
3 == SrcTraits::rank ? R2 : (
4 == SrcTraits::rank ? R3 : (
5 == SrcTraits::rank ? R4 : (
6 == SrcTraits::rank ? R5 : R6 ))))))) };
// Subview's layout
typedef typename std::conditional<
( /* Same array layout IF */
( rank == 0 ) /* output rank zero */
||
// OutputRank 1 or 2, InputLayout Left, Interval 0
// because single stride one or second index has a stride.
( rank <= 2 && R0 && std::is_same< typename SrcTraits::array_layout , Kokkos::LayoutLeft >::value )
||
// OutputRank 1 or 2, InputLayout Right, Interval [InputRank-1]
// because single stride one or second index has a stride.
( rank <= 2 && R0_rev && std::is_same< typename SrcTraits::array_layout , Kokkos::LayoutRight >::value )
), typename SrcTraits::array_layout , Kokkos::LayoutStride
>::type array_layout ;
typedef typename SrcTraits::value_type sacado_mp_vector_type ;
typedef typename std::conditional< rank == 0 , sacado_mp_vector_type ,
typename std::conditional< rank == 1 , sacado_mp_vector_type * ,
typename std::conditional< rank == 2 , sacado_mp_vector_type ** ,
typename std::conditional< rank == 3 , sacado_mp_vector_type *** ,
typename std::conditional< rank == 4 , sacado_mp_vector_type **** ,
typename std::conditional< rank == 5 , sacado_mp_vector_type ***** ,
typename std::conditional< rank == 6 , sacado_mp_vector_type ****** ,
sacado_mp_vector_type *******
>::type >::type >::type >::type >::type >::type >::type
data_type ;
public:
typedef Kokkos::Experimental::ViewTraits
< data_type
, array_layout
, typename SrcTraits::device_type
, typename SrcTraits::memory_traits > traits_type ;
typedef Kokkos::Experimental::View
< data_type
, array_layout
, typename SrcTraits::device_type
, typename SrcTraits::memory_traits > type ;
// The presumed type is 'ViewMapping< traits_type , void >'
// However, a compatible ViewMapping is acceptable.
template< class DstTraits >
KOKKOS_INLINE_FUNCTION
static void assign( ViewMapping< DstTraits , void > & dst
, ViewMapping< SrcTraits , void > const & src
, Arg0 arg0, Args ... args )
{
static_assert(
ViewMapping< DstTraits , traits_type , void >::is_assignable ,
"Subview destination type must be compatible with subview derived type" );
typedef ViewMapping< DstTraits , void > DstType ;
typedef typename DstType::offset_type dst_offset_type ;
const SubviewExtents< SrcTraits::rank , rank >
extents( src.m_offset.m_dim , arg0 , args... );
const size_t offset = src.m_offset( extents.domain_offset(0)
, extents.domain_offset(1)
, extents.domain_offset(2)
, extents.domain_offset(3)
, extents.domain_offset(4)
, extents.domain_offset(5)
, extents.domain_offset(6)
, extents.domain_offset(7) );
dst.m_offset = dst_offset_type( src.m_offset , extents );
dst.m_handle.value_ptr = src.m_handle.value_ptr + offset;
dst.m_handle.scalar_ptr =
src.m_handle.scalar_ptr + offset * src.m_stride * src.m_sacado_size.value;
dst.m_stride = src.m_stride;
dst.m_sacado_size = src.m_sacado_size;
}
};
} // namespace Impl
} // namespace Experimental
} // namespace Kokkos
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
namespace Kokkos {
namespace Experimental {
namespace Impl {
// Partition mapping
template< class DataType, class ...P, unsigned Size >
class ViewMapping<
void,
ViewTraits<DataType,P...> ,
Sacado::MP::VectorPartition<Size> >
{
public:
enum { is_assignable = true };
typedef ViewTraits<DataType,P...> src_traits;
typedef ViewMapping< src_traits , void > src_type ;
typedef typename src_type::offset_type::dimension_type src_dimension;
typedef typename src_traits::value_type mp_vector_type;
typedef typename mp_vector_type::storage_type storage_type;
typedef typename storage_type::template apply_N<Size> storage_apply;
typedef typename storage_apply::type strided_storage_type;
typedef Sacado::MP::Vector< strided_storage_type > strided_value_type;
typedef typename
ViewDataType< strided_value_type , src_dimension >::type strided_data_type;
typedef ViewTraits<strided_data_type,P...> dst_traits;
typedef View<strided_data_type,P...> type;
typedef ViewMapping< dst_traits , void > dst_type ;
KOKKOS_INLINE_FUNCTION static
void assign( dst_type & dst
, const src_type & src
, const Sacado::MP::VectorPartition<Size> & part )
{
// The pointer assignments below are not sufficient for dynamically sized
// scalar types, so disallow this case for now
static_assert( storage_type::is_static,
"For performance reasons, partitioned assignment is only implemented for statically-sized MP::Vector types" );
unsigned len = part.end - part.begin;
if ( Size != len || Size == 0 ) {
Kokkos::abort("\n\n ****** Kokkos::View< Sacado::MP::Vector ... > Invalid size in partitioned view assignment ******\n\n");
}
dst.m_handle.value_ptr =
reinterpret_cast<strided_value_type*>( src.m_handle.value_ptr ) +
part.begin / len ;
dst.m_handle.scalar_ptr = src.m_handle.scalar_ptr +
(part.begin / len) * src.m_stride * src.m_sacado_size.value ;
dst.m_offset = src.m_offset ;
dst.m_stride = src.m_stride * src.m_sacado_size.value / Size ;
dst.m_sacado_size = len ;
}
};
} // namespace Impl
} // namespace Experimental
template< unsigned Size, typename D, typename ... P >
KOKKOS_INLINE_FUNCTION
typename Kokkos::Experimental::Impl::ViewMapping< void, typename Kokkos::Experimental::ViewTraits<D,P...>, Sacado::MP::VectorPartition<Size> >::type
partition( const Kokkos::Experimental::View<D,P...> & src ,
const unsigned beg )
{
typedef Kokkos::Experimental::ViewTraits<D,P...> traits;
typedef typename Kokkos::Experimental::Impl::ViewMapping< void, traits, Sacado::MP::VectorPartition<Size> >::type DstViewType;
const Sacado::MP::VectorPartition<Size> part( beg , beg+Size );
return DstViewType(src, part);
}
} // namespace Kokkos
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
namespace Kokkos {
namespace Impl {
// Specialization for deep_copy( view, view::value_type ) for Cuda
#if defined( KOKKOS_HAVE_CUDA )
template< class OutputView >
struct ViewFill< OutputView ,
typename std::enable_if< std::is_same< typename OutputView::specialize,
Experimental::Impl::ViewMPVectorContiguous >::value &&
std::is_same< typename OutputView::execution_space,
Cuda >::value >::type >
{
typedef typename OutputView::const_value_type const_value_type ;
typedef typename OutputView::execution_space execution_space ;
typedef typename OutputView::size_type size_type ;
template <unsigned VectorLength>
struct Kernel {
typedef typename OutputView::execution_space execution_space ;
const OutputView output;
const_value_type input;
Kernel( const OutputView & arg_out , const_value_type & arg_in ) :
output(arg_out), input(arg_in) {}
typedef typename Kokkos::TeamPolicy< execution_space >::member_type team_member ;
KOKKOS_INLINE_FUNCTION
void operator()( const team_member & dev ) const
{
const size_type tidx = dev.team_rank() % VectorLength;
const size_type tidy = dev.team_rank() / VectorLength;
const size_type nrow = dev.team_size() / VectorLength;
const size_type nvec = dimension_scalar(output);
const size_type i0 = dev.league_rank() * nrow + tidy;
if ( i0 >= output.dimension_0() ) return;
for ( size_type i1 = 0 ; i1 < output.dimension_1() ; ++i1 ) {
for ( size_type i2 = 0 ; i2 < output.dimension_2() ; ++i2 ) {
for ( size_type i3 = 0 ; i3 < output.dimension_3() ; ++i3 ) {
for ( size_type i4 = 0 ; i4 < output.dimension_4() ; ++i4 ) {
for ( size_type i5 = 0 ; i5 < output.dimension_5() ; ++i5 ) {
for ( size_type i6 = 0 ; i6 < output.dimension_6() ; ++i6 ) {
for ( size_type i7 = 0 ; i7 < output.dimension_7() ; ++i7 ) {
for ( size_type is = tidx ; is < nvec ; is+=VectorLength ) {
output(i0,i1,i2,i3,i4,i5,i6,i7).fastAccessCoeff(is) =
input.fastAccessCoeff(is) ;
}}}}}}}}
}
};
ViewFill( const OutputView & output , const_value_type & input )
{
if ( Sacado::is_constant(input) ) {
deep_copy( output , input.fastAccessCoeff(0) );
}
else {
// Coalesced accesses are 128 bytes in size
typedef typename OutputView::array_type::value_type scalar_type;
const unsigned vector_length =
( 128 + sizeof(scalar_type)-1 ) / sizeof(scalar_type);
// 8 warps per block should give good occupancy
const size_type block_size = 256;
const size_type rows_per_block = block_size / vector_length;
const size_type n = output.dimension_0();
const size_type league_size = ( n + rows_per_block-1 ) / rows_per_block;
const size_type team_size = rows_per_block * vector_length;
Kokkos::TeamPolicy< execution_space > config( league_size, team_size );
parallel_for( config, Kernel<vector_length>(output, input) );
execution_space::fence();
}
}
};
#endif /* #if defined( KOKKOS_HAVE_CUDA ) */
} // namespace Impl
} // namespace Kokkos
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
namespace Kokkos {
namespace Experimental {
namespace Impl {
struct ViewSpecializeSacadoFad;
/**\brief Assign compatible Sacado FAD<MP::Vector> view mappings.
*
* View<MP::Vector> = View< FAD<MP::Vector> >
*
* This only works for statically allocated MP::Vector currently
*/
template< class DstTraits , class SrcTraits >
class ViewMapping< DstTraits , SrcTraits ,
typename std::enable_if<(
std::is_same< typename DstTraits::memory_space
, typename SrcTraits::memory_space >::value
&&
// Destination view has MP::Vector only
std::is_same< typename DstTraits::specialize
, ViewMPVectorContiguous >::value
&&
// Source view has FAD only
std::is_same< typename SrcTraits::specialize
, ViewSpecializeSacadoFad >::value
)>::type >
{
public:
enum { is_assignable = true };
typedef Kokkos::Experimental::Impl::SharedAllocationTracker TrackType ;
typedef ViewMapping< DstTraits , void > DstType ;
typedef ViewMapping< SrcTraits , void > SrcFadType ;
template< class DstType >
KOKKOS_INLINE_FUNCTION static
void assign( DstType & dst
, const SrcFadType & src
, const TrackType & )
{
static_assert(
(
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutLeft >::value ||
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutRight >::value ||
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutStride >::value
)
&&
(
std::is_same< typename SrcTraits::array_layout
, Kokkos::LayoutLeft >::value ||
std::is_same< typename SrcTraits::array_layout
, Kokkos::LayoutRight >::value ||
std::is_same< typename SrcTraits::array_layout
, Kokkos::LayoutStride >::value
)
, "View of FAD requires LayoutLeft, LayoutRight, or LayoutStride" );
static_assert(
std::is_same< typename DstTraits::array_layout
, typename SrcTraits::array_layout >::value ||
std::is_same< typename DstTraits::array_layout
, Kokkos::LayoutStride >::value ,
"View assignment must have compatible layout" );
static_assert(
std::is_same< typename DstTraits::data_type
, typename SrcTraits::scalar_array_type >::value ||
std::is_same< typename DstTraits::data_type
, typename SrcTraits::const_scalar_array_type >::value ,
"View assignment must have same value type or const = non-const" );
static_assert(
ViewDimensionAssignable
< typename DstType::offset_type::dimension_type
, typename SrcFadType::offset_type::dimension_type >::value ,
"View assignment must have compatible dimensions" );
typedef typename DstType::offset_type dst_offset_type ;
dst.m_offset = dst_offset_type( src.m_offset );
dst.m_handle.assign(src.m_handle) ;
dst.m_stride = 1;
// Don't need to set dst.m_sacado_size since it is determined statically
static_assert( DstType::is_static,
"Destination view must be statically allocated" );
}
};
} // namespace Impl
} // namespace Experimental
} // namespace Kokkos
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
#endif /* #ifndef KOKKOS_EXPERIMENTAL_VIEW_MP_VECTOR_CONTIGUOUS_HPP */
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