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41 
42 #ifndef KOKKOS_EXPERIMENTAL_VIEW_MP_VECTOR_CONTIGUOUS_HPP
43 #define KOKKOS_EXPERIMENTAL_VIEW_MP_VECTOR_CONTIGUOUS_HPP
44 
45 #include "Sacado_Traits.hpp"
46 #include "Sacado_MP_Vector.hpp"
48 
49 // Only include forward declarations so any overloads appear before they
50 // might be used inside Kokkos
51 #include "Kokkos_Core_fwd.hpp"
52 #include "Kokkos_View.hpp"
53 #include "Kokkos_Layout.hpp"
54 #include "Kokkos_View_Utils.hpp"
56 
57 
58 //----------------------------------------------------------------------------
59 
60 namespace Kokkos {
61 
62  namespace Impl {
63  template<class Space, class T, class ... P>
64  struct MirrorType;
65  }
66 
67 }
68 
69 namespace Kokkos {
70 namespace Experimental {
71 namespace Impl {
72 
74 
75 template< class ... Args >
76 struct is_ViewMPVectorContiguous { enum { value = false }; };
77 
78 template< class D , class ... P , class ... Args >
79 struct is_ViewMPVectorContiguous< Kokkos::View<D,P...> , Args... > {
80  enum { value =
81  std::is_same< typename Kokkos::ViewTraits<D,P...>::specialize
83  &&
84  ( ( sizeof...(Args) == 0 ) ||
85  is_ViewMPVectorContiguous< Args... >::value ) };
86 };
87 
88 } // namespace Impl
89 } // namespace Experimental
90 } // namespace Kokkos
91 
92 namespace Kokkos {
93 
94 template <typename T, typename ... P>
95 struct is_view_mp_vector< View<T,P...> > {
96  typedef View<T,P...> view_type;
97  static const bool value =
98  std::is_same< typename view_type::specialize,
100 };
101 
102 template <typename T, typename ... P>
103 KOKKOS_INLINE_FUNCTION
104 constexpr typename
105 std::enable_if< is_view_mp_vector< View<T,P...> >::value, unsigned >::type
106 dimension_scalar(const View<T,P...>& view) {
107  return view.implementation_map().dimension_scalar();
108 }
109 
110 // Declare overloads of create_mirror() so they are in scope
111 // Kokkos_Core.hpp is included below
112 
113 template< class T , class ... P >
114 inline
115 typename Kokkos::View<T,P...>::HostMirror
117  const Kokkos::View<T,P...> & src,
118  typename std::enable_if<
119  std::is_same< typename ViewTraits<T,P...>::specialize ,
121  !std::is_same< typename Kokkos::ViewTraits<T,P...>::array_layout,
122  Kokkos::LayoutStride >::value >::type * = 0);
123 
124 template< class T , class ... P >
125 inline
126 typename Kokkos::View<T,P...>::HostMirror
128  const Kokkos::View<T,P...> & src,
129  typename std::enable_if<
130  std::is_same< typename ViewTraits<T,P...>::specialize ,
132  std::is_same< typename Kokkos::ViewTraits<T,P...>::array_layout,
133  Kokkos::LayoutStride >::value >::type * = 0);
134 
135 template<class Space, class T, class ... P>
136 typename Impl::MirrorType<Space,T,P ...>::view_type
138  const Space&,
139  const Kokkos::View<T,P...> & src,
140  typename std::enable_if<
141  std::is_same< typename ViewTraits<T,P...>::specialize ,
143 
144 // Overload of deep_copy for MP::Vector views intializing to a constant scalar
145 template< class DT, class ... DP >
146 void deep_copy(
147  const View<DT,DP...> & view ,
148  const typename View<DT,DP...>::array_type::value_type & value
149  , typename std::enable_if<(
150  std::is_same< typename ViewTraits<DT,DP...>::specialize
152  )>::type * = 0 );
153 
154 // Overload of deep_copy for MP::Vector views intializing to a constant MP::Vector
155 template< class DT, class ... DP >
156 void deep_copy(
157  const View<DT,DP...> & view ,
158  const typename View<DT,DP...>::value_type & value
159  , typename std::enable_if<(
160  std::is_same< typename ViewTraits<DT,DP...>::specialize
162  )>::type * = 0 );
163 
164 // Overload of deep_copy for MP::Vector views intializing to a constant scalar
165 template< class ExecSpace , class DT, class ... DP >
166 void deep_copy(
167  const ExecSpace &,
168  const View<DT,DP...> & view ,
169  const typename View<DT,DP...>::array_type::value_type & value
170  , typename std::enable_if<(
171  Kokkos::Impl::is_execution_space< ExecSpace >::value &&
172  std::is_same< typename ViewTraits<DT,DP...>::specialize
174  )>::type * = 0 );
175 
176 // Overload of deep_copy for MP::Vector views intializing to a constant MP::Vector
177 template< class ExecSpace , class DT, class ... DP >
178 void deep_copy(
179  const ExecSpace &,
180  const View<DT,DP...> & view ,
181  const typename View<DT,DP...>::value_type & value
182  , typename std::enable_if<(
183  Kokkos::Impl::is_execution_space< ExecSpace >::value &&
184  std::is_same< typename ViewTraits<DT,DP...>::specialize
186  )>::type * = 0 );
187 
188 /* Specialize for deep copy of MP::Vector */
189 template< class DT , class ... DP , class ST , class ... SP >
190 inline
191 void deep_copy( const View<DT,DP...> & dst ,
192  const View<ST,SP...> & src
193  , typename std::enable_if<(
194  std::is_same< typename ViewTraits<DT,DP...>::specialize
196  &&
197  std::is_same< typename ViewTraits<ST,SP...>::specialize
199  )>::type * = 0 );
200 
201 } // namespace Kokkos
202 
203 //----------------------------------------------------------------------------
204 
205 #include "Kokkos_Core.hpp"
206 
207 namespace Kokkos {
208 
209 template <typename D, typename ... P>
210 struct FlatArrayType< View<D,P...>,
211  typename std::enable_if< is_view_mp_vector< View<D,P...> >::value >::type > {
212  typedef View<D,P...> view_type;
213  typedef typename view_type::traits::dimension dimension;
215  typedef typename Kokkos::Impl::ViewDataType< flat_value_type , dimension >::type flat_data_type;
216  typedef View<flat_data_type,P...> type;
217 };
218 
219 template< class T , class ... P >
220 inline
221 typename Kokkos::View<T,P...>::HostMirror
222 create_mirror( const Kokkos::View<T,P...> & src
223  , typename std::enable_if<
224  std::is_same< typename ViewTraits<T,P...>::specialize ,
226  &&
227  ! std::is_same< typename Kokkos::ViewTraits<T,P...>::array_layout
228  , Kokkos::LayoutStride >::value
229  >::type *
230  )
231 {
232  typedef View<T,P...> src_type ;
233  typedef typename src_type::HostMirror dst_type ;
234 
235  typename src_type::array_layout layout = src.layout();
236  layout.dimension[src_type::rank] = Kokkos::dimension_scalar(src);
237 
238  return dst_type(std::string(src.label()).append("_mirror"), layout);
239 }
240 
241 template< class T , class ... P >
242 inline
243 typename Kokkos::View<T,P...>::HostMirror
244 create_mirror( const Kokkos::View<T,P...> & src
245  , typename std::enable_if<
246  std::is_same< typename ViewTraits<T,P...>::specialize ,
248  &&
249  std::is_same< typename Kokkos::ViewTraits<T,P...>::array_layout
250  , Kokkos::LayoutStride >::value
251  >::type *
252  )
253 {
254  typedef View<T,P...> src_type ;
255  typedef typename src_type::HostMirror dst_type ;
256 
257  Kokkos::LayoutStride layout ;
258 
259  layout.dimension[0] = src.extent(0);
260  layout.dimension[1] = src.extent(1);
261  layout.dimension[2] = src.extent(2);
262  layout.dimension[3] = src.extent(3);
263  layout.dimension[4] = src.extent(4);
264  layout.dimension[5] = src.extent(5);
265  layout.dimension[6] = src.extent(6);
266  layout.dimension[7] = src.extent(7);
267 
268  layout.stride[0] = src.stride_0();
269  layout.stride[1] = src.stride_1();
270  layout.stride[2] = src.stride_2();
271  layout.stride[3] = src.stride_3();
272  layout.stride[4] = src.stride_4();
273  layout.stride[5] = src.stride_5();
274  layout.stride[6] = src.stride_6();
275  layout.stride[7] = src.stride_7();
276 
277  layout.dimension[src_type::rank] = Kokkos::dimension_scalar(src);
278 
279  return dst_type(std::string(src.label()).append("_mirror"), layout);
280 }
281 
282 template<class Space, class T, class ... P>
283 typename Impl::MirrorType<Space,T,P ...>::view_type
284 create_mirror(const Space& , const Kokkos::View<T,P...> & src
285  , typename std::enable_if<
286  std::is_same< typename ViewTraits<T,P...>::specialize ,
288  >::type *) {
289  typedef View<T,P...> src_type ;
290  typename src_type::array_layout layout = src.layout();
291  layout.dimension[src_type::rank] = Kokkos::dimension_scalar(src);
292  return typename Impl::MirrorType<Space,T,P ...>::view_type(src.label(),layout);
293 }
294 
295 // Overload of deep_copy for MP::Vector views intializing to a constant scalar
296 template< class DT, class ... DP >
298  const View<DT,DP...> & view ,
299  const typename View<DT,DP...>::array_type::value_type & value
300  , typename std::enable_if<(
301  std::is_same< typename ViewTraits<DT,DP...>::specialize
303  )>::type * )
304 {
305  static_assert(
306  std::is_same< typename ViewTraits<DT,DP...>::value_type ,
307  typename ViewTraits<DT,DP...>::non_const_value_type >::value
308  , "Can only deep copy into non-const type" );
309 
310  typedef typename FlatArrayType< View<DT,DP...> >::type flat_array_type;
312 }
313 
314 // Overload of deep_copy for MP::Vector views intializing to a constant MP::Vector
315 template< class DT, class ... DP >
317  const View<DT,DP...> & view ,
318  const typename View<DT,DP...>::value_type & value
319  , typename std::enable_if<(
320  std::is_same< typename ViewTraits<DT,DP...>::specialize
322  )>::type * )
323 {
324  static_assert(
325  std::is_same< typename ViewTraits<DT,DP...>::value_type ,
326  typename ViewTraits<DT,DP...>::non_const_value_type >::value
327  , "Can only deep copy into non-const type" );
328 
329  // static_assert(
330  // Sacado::StaticSize< typename View<DT,DP...>::value_type >::value
331  // ||
332  // std::is_same< Kokkos::Impl::ActiveExecutionMemorySpace
333  // , Kokkos::HostSpace >::value
334  // , "Deep copy from a FAD type must be statically sized or host space" );
335 
336  Kokkos::Impl::StokhosViewFill< View<DT,DP...> >( view , value );
337 }
338 
339 // Overload of deep_copy for MP::Vector views intializing to a constant scalar
340 template< class ExecSpace , class DT, class ... DP >
342  const ExecSpace &,
343  const View<DT,DP...> & view ,
344  const typename View<DT,DP...>::array_type::value_type & value
345  , typename std::enable_if<(
346  Kokkos::Impl::is_execution_space< ExecSpace >::value &&
347  std::is_same< typename ViewTraits<DT,DP...>::specialize
349  )>::type * )
350 {
351  static_assert(
352  std::is_same< typename ViewTraits<DT,DP...>::value_type ,
353  typename ViewTraits<DT,DP...>::non_const_value_type >::value
354  , "Can only deep copy into non-const type" );
355 
356  typedef typename FlatArrayType< View<DT,DP...> >::type flat_array_type;
358 }
359 
360 // Overload of deep_copy for MP::Vector views intializing to a constant MP::Vector
361 template< class ExecSpace , class DT, class ... DP >
363  const ExecSpace &,
364  const View<DT,DP...> & view ,
365  const typename View<DT,DP...>::value_type & value
366  , typename std::enable_if<(
367  Kokkos::Impl::is_execution_space< ExecSpace >::value &&
368  std::is_same< typename ViewTraits<DT,DP...>::specialize
370  )>::type * )
371 {
372  static_assert(
373  std::is_same< typename ViewTraits<DT,DP...>::value_type ,
374  typename ViewTraits<DT,DP...>::non_const_value_type >::value
375  , "Can only deep copy into non-const type" );
376 
377  // static_assert(
378  // Sacado::StaticSize< typename View<DT,DP...>::value_type >::value
379  // ||
380  // std::is_same< Kokkos::Impl::ActiveExecutionMemorySpace
381  // , Kokkos::HostSpace >::value
382  // , "Deep copy from a FAD type must be statically sized or host space" );
383 
384  Kokkos::Impl::StokhosViewFill< View<DT,DP...> >( view , value );
385 }
386 
387 /* Specialize for deep copy of MP::Vector */
388 template< class DT , class ... DP , class ST , class ... SP >
389 inline
390 void deep_copy( const View<DT,DP...> & dst ,
391  const View<ST,SP...> & src
392  , typename std::enable_if<(
393  std::is_same< typename ViewTraits<DT,DP...>::specialize
395  &&
396  std::is_same< typename ViewTraits<ST,SP...>::specialize
398  )>::type * )
399 {
400  static_assert(
401  std::is_same< typename ViewTraits<DT,DP...>::value_type ,
402  typename ViewTraits<DT,DP...>::non_const_value_type >::value
403  , "Deep copy destination must be non-const" );
404 
405  static_assert(
406  ( unsigned(ViewTraits<DT,DP...>::rank) ==
407  unsigned(ViewTraits<ST,SP...>::rank) )
408  , "Deep copy destination and source must have same rank" );
409 
410  // Note ETP 09/29/2016: Use FlatArrayType instead of array_type to work
411  // around issue where dst and src are rank-1, but have differing layouts.
412  // Kokkos' deep_copy() doesn't work in this case because the array_type
413  // will be rank-2. It should be possible to make deep_copy() work there,
414  // but this seems easier.
415 
416  // Kokkos::deep_copy(
417  // typename View<DT,DP...>::array_type( dst ) ,
418  // typename View<ST,SP...>::array_type( src ) );
419 
421  typename FlatArrayType< View<DT,DP...> >::type( dst ) ,
422  typename FlatArrayType< View<ST,SP...> >::type( src ) );
423 }
424 
425 }
426 
427 namespace Kokkos {
428 namespace Impl {
429 
430 template< class DataType , class ArrayLayout , typename StorageType >
431 struct ViewDataAnalysis< DataType /* Original view data type */
432  , ArrayLayout
433  , Sacado::MP::Vector< StorageType > >
434 {
435 private:
436 
438  typedef ViewArrayAnalysis< DataType > array_analysis ;
439  static const int DimVector = StorageType::static_size;
440 
441 public:
442 
443  // Specialized view data mapping:
445 
446  typedef typename array_analysis::dimension dimension ;
448  typedef typename array_analysis::const_value_type const_value_type ;
449  typedef typename array_analysis::non_const_value_type non_const_value_type ;
450 
451  // Generate analogous multidimensional array specification type.
452  typedef typename
453  ViewDataType< value_type , dimension >::type type ;
454  typedef typename
455  ViewDataType< const_value_type , dimension >::type const_type ;
456  typedef typename
457  ViewDataType< non_const_value_type , dimension >::type non_const_type ;
458 
459 private:
460 
461  // A const ?
462  enum { is_const = std::is_same< value_type , const_value_type >::value };
463 
464  // The unwrapped scalar types:
465  typedef typename
466  std::conditional< is_const , const ScalarType , ScalarType >::type
468 
471 
472  // Prepend or append the vector dimension based on ArrayLayout
473  // Note: you can't prepend a static dimension, so use 0 for LayoutLeft
474  typedef typename array_analysis::dimension::
475  template prepend<0>::type
477  typedef typename array_analysis::dimension::
478  template append<DimVector>::type
480  typedef typename std::conditional<
481  std::is_same< ArrayLayout, Kokkos::LayoutLeft>::value,
484 
485 public:
486 
487  // Generate "flattened" multidimensional array specification type.
488  typedef typename
489  ViewDataType< scalar_type , scalar_dimension >::type scalar_array_type ;
490 
491  typedef typename
492  ViewDataType< const_scalar_type , scalar_dimension >::type
494 
495  typedef typename
496  ViewDataType< non_const_scalar_type , scalar_dimension >::type
498 };
499 
500 } // namespace Impl
501 } // namespace Kokkos
502 
503 //----------------------------------------------------------------------------
504 
505 namespace Kokkos {
506 namespace Experimental {
507 namespace Impl {
508 
509  template < class ValueType,
510  bool is_static = Sacado::IsStaticallySized<ValueType>::value >
512 
513 // MP::Vector allocation for statically-sized MP::Vector types.
514 // In this case we can reinterpret cast directly between pointers of types
515 // MP::Vector<Storage> and MP::Vector<Storage>::value_type.
516 template <class ValueType>
517 struct MPVectorAllocation<ValueType, true> {
518  typedef ValueType value_type;
519  typedef typename Sacado::ValueType<value_type>::type scalar_type;
520 
523 
524  KOKKOS_INLINE_FUNCTION
525  static constexpr size_t
526  memory_span(const size_t span, const unsigned vector_size) {
527  return span * vector_size * sizeof(scalar_type);
528  }
529 
530  KOKKOS_INLINE_FUNCTION
531  MPVectorAllocation() : value_ptr(0), scalar_ptr(0) {}
532 
533  template <typename T>
534  KOKKOS_INLINE_FUNCTION
536  value_ptr = a.value_ptr;
537  scalar_ptr = a.scalar_ptr;
538  return *this;
539  }
540 
541  KOKKOS_INLINE_FUNCTION
542  void set(value_type* ptr, const size_t span, const unsigned vector_size) {
543  value_ptr = ptr;
544  scalar_ptr = reinterpret_cast<scalar_type*>(ptr);
545  }
546 
547  template <class ExecSpace>
548  struct ConstructDestructFunctor {
549  typedef Kokkos::Impl::ViewValueFunctor< ExecSpace, scalar_type > FunctorType ;
552 
553  ConstructDestructFunctor() = default;
554  ConstructDestructFunctor(const ConstructDestructFunctor&) = default;
555  ConstructDestructFunctor& operator=(const ConstructDestructFunctor&) = default;
556 
557  ConstructDestructFunctor(const ExecSpace & space,
558  const bool initialize,
559  const size_t span,
560  const unsigned vector_size,
561  scalar_type* scalar_ptr) :
562  m_functor( space , scalar_ptr , span*vector_size ),
563  m_initialize(initialize) {}
564 
566  if (m_initialize)
567  m_functor.construct_shared_allocation();
568  }
569 
571  if (m_initialize)
572  m_functor.destroy_shared_allocation();
573  }
574 
575  };
576 
577  template <class ExecSpace>
578  inline ConstructDestructFunctor<ExecSpace>
579  create_functor(const ExecSpace & space,
580  const bool initialize,
581  const size_t span,
582  const unsigned vector_size) const {
583  return ConstructDestructFunctor<ExecSpace>(space, initialize, span, vector_size, scalar_ptr);
584  }
585 
586  // Assign scalar_type pointer to give ptr
587  template <typename T>
588  KOKKOS_INLINE_FUNCTION
589  void assign(T * ptr) {
590  value_ptr = reinterpret_cast<value_type*>(ptr);
591  scalar_ptr = reinterpret_cast<scalar_type*>(ptr);
592  }
593 
594 };
595 
596 // MP::Vector allocation for dynamically-sized MP::Vector types.
597 // In this case we allocate two chunks of data, the first for the the
598 // MP::Vector<Storage> itself and then for the underlying scalar type
599 // (MP::Vector<Storage>::value_type). The memory is laid out with the
600 // former followed by the latter.
601 template <class ValueType>
602 struct MPVectorAllocation<ValueType, false> {
603  typedef ValueType value_type;
604  typedef typename Sacado::ValueType<value_type>::type scalar_type;
605 
608 
609  KOKKOS_INLINE_FUNCTION
610  static constexpr size_t
611  memory_span(const size_t span, const unsigned vector_size) {
612  return span * ( vector_size * sizeof(scalar_type) + sizeof(value_type) );
613  }
614 
615  KOKKOS_INLINE_FUNCTION
616  MPVectorAllocation() : value_ptr(0), scalar_ptr(0) {}
617 
618  template <typename T>
619  KOKKOS_INLINE_FUNCTION
621  value_ptr = a.value_ptr;
622  scalar_ptr = a.scalar_ptr;
623  return *this;
624  }
625 
626  // We are making an assumption the data is laid out as described above,
627  // which in general may not be true if the view is created from memory
628  // allocated elsewhere. We should check for that.
629  KOKKOS_INLINE_FUNCTION
630  void set(value_type* ptr, const size_t span, const unsigned vector_size) {
631  value_ptr = ptr;
632  scalar_ptr = reinterpret_cast<scalar_type*>(ptr+span);
633  }
634 
635  template <class ExecSpace>
636  struct VectorConstruct {
637  ExecSpace m_space;
640  size_t m_span;
641  unsigned m_vector_size;
642 
643  VectorConstruct() = default;
644  VectorConstruct(const VectorConstruct&) = default;
645  VectorConstruct& operator=(const VectorConstruct&) = default;
646 
647  inline
648  VectorConstruct(const ExecSpace& space,
649  value_type* p,
650  scalar_type* sp,
651  const size_t span,
652  const unsigned vector_size) :
653  m_space(space), m_p(p), m_sp(sp), m_span(span), m_vector_size(vector_size) {}
654 
655  inline void execute() {
656  if ( ! m_space.in_parallel() ) {
657  typedef Kokkos::RangePolicy< ExecSpace > PolicyType ;
658  const Kokkos::Impl::ParallelFor< VectorConstruct , PolicyType >
659  closure( *this , PolicyType( 0 , m_span ) );
660  closure.execute();
661  m_space.fence();
662  }
663  else {
664  for ( size_t i = 0 ; i < m_span ; ++i ) operator()(i);
665  }
666  }
667 
668  KOKKOS_INLINE_FUNCTION
669  void operator() (const size_t i) const {
670  new (m_p+i) value_type(m_vector_size, m_sp+i*m_vector_size, false);
671  }
672  };
673 
674  template <class ExecSpace>
675  struct ConstructDestructFunctor {
676  typedef Kokkos::Impl::ViewValueFunctor< ExecSpace, scalar_type > ScalarFunctorType ;
677  typedef VectorConstruct< ExecSpace > VectorFunctorType ;
681 
682  ConstructDestructFunctor() = default;
683  ConstructDestructFunctor(const ConstructDestructFunctor&) = default;
684  ConstructDestructFunctor& operator=(const ConstructDestructFunctor&) = default;
685 
686  ConstructDestructFunctor(const ExecSpace & space,
687  const bool initialize,
688  const size_t span,
689  const unsigned vector_size,
690  scalar_type* scalar_ptr,
691  value_type* value_ptr) :
692  m_scalar_functor( space , scalar_ptr , span*vector_size ),
693  m_vector_functor( space , value_ptr , scalar_ptr , span , vector_size ),
694  m_initialize(initialize) {}
695 
697  // First initialize the scalar_type array
698  if (m_initialize)
699  m_scalar_functor.construct_shared_allocation();
700 
701  // Construct each MP::Vector using memory in scalar_ptr array,
702  // setting pointer to MP::Vector values from values array
703  // Equivalent to:
704  // value_type* p = value_ptr;
705  // scalar_type* sp = scalar_ptr;
706  // for (size_t i=0; i<span; ++i) {
707  // new (p++) value_type(vector_size, sp, false);
708  // sp += vector_size;
709  // }
710  // (we always need to do this, regardless of initialization)
711  m_vector_functor.execute();
712  }
713 
715  // We only need to (possibly) call the destructor on values in the
716  // scalar_type array, since the value_type array is a view into it
717  if (m_initialize)
718  m_scalar_functor.destroy_shared_allocation();
719  }
720 
721  };
722 
723  template <class ExecSpace>
724  inline ConstructDestructFunctor<ExecSpace>
725  create_functor(const ExecSpace & space,
726  const bool initialize,
727  const size_t span,
728  const unsigned vector_size) const {
729  return ConstructDestructFunctor<ExecSpace>(space, initialize, span, vector_size, scalar_ptr, value_ptr);
730  }
731 
732  // Assign scalar_type pointer to give ptr
733  // This makes BIG assumption on how the data was allocated
734  template <typename T>
735  KOKKOS_INLINE_FUNCTION
736  void assign(T * ptr) {
737  value_ptr = reinterpret_cast<value_type*>(ptr);
738  if (ptr != 0)
739  scalar_ptr = value_ptr->coeff();
740  else
741  scalar_ptr = 0;
742  }
743 };
744 
745 }}} // namespace Kokkos::Experimental::Impl
746 
747 namespace Kokkos {
748 namespace Impl {
749 
750 template< class Traits >
751 class ViewMapping< Traits , /* View internal mapping */
752  typename std::enable_if<
753  ( std::is_same< typename Traits::specialize
754  , Kokkos::Experimental::Impl::ViewMPVectorContiguous >::value
755  &&
756  ( std::is_same< typename Traits::array_layout
757  , Kokkos::LayoutLeft >::value
758  ||
759  std::is_same< typename Traits::array_layout
760  , Kokkos::LayoutRight >::value
761  ||
762  std::is_same< typename Traits::array_layout
763  , Kokkos::LayoutStride >::value
764  )
765  )>::type >
766 {
767 private:
768 
769  template< class , class ... > friend class ViewMapping ;
770  template< class , class ... > friend class Kokkos::View ;
771 
775  typedef typename
776  std::add_const< intrinsic_scalar_type >::type const_intrinsic_scalar_type ;
777 
778  enum { StokhosStorageStaticDimension = stokhos_storage_type::static_size };
779  typedef Sacado::integral_nonzero< unsigned , StokhosStorageStaticDimension > sacado_size_type;
780 
782 
783  typedef ViewOffset< typename Traits::dimension
784  , typename Traits::array_layout
785  , void
787 
788  // Prepend or append the vector dimension based on array_layout
789  // Note: you can't prepend a static dimension, so use 0 for LayoutLeft
790  typedef ViewArrayAnalysis< typename Traits::data_type > array_analysis ;
791  typedef typename array_analysis::dimension array_dimension;
792  typedef ViewOffset< typename array_dimension::
793  template append<StokhosStorageStaticDimension>::type,
794  typename Traits::array_layout,
795  void
797  typedef ViewOffset< typename array_dimension::
798  template prepend<0>::type,
799  typename Traits::array_layout,
800  void
802  typedef typename std::conditional<
803  std::is_same< typename Traits::array_layout, Kokkos::LayoutLeft>::value,
806 
809  unsigned m_stride ;
810  sacado_size_type m_sacado_size ; // Size of sacado dimension
811 
812  // Note: if the view is partitioned, m_sacado_size is not the stride in
813  // memory between consecutive MP::Vector entries for given vector index:
814  //
815  // original_sacado_size = m_stride * m_sacado_size
816  // m_stride = 1 for original allocation.
817  //
818  // Stride here has a slightly different meaning than in the standard
819  // View implementation. For the moment we are assuming no padding within
820  // the view array itself and stride is to allow for partitioning the view
821  // by dividing up the scalar type.
822  //
823  // I suspect we could combine this with the way the stride is managed in
824  // the default view, in which case, I don't think we even need a
825  // specialization
826  //
827  // For reshaping by folding the sacado dimension into its next adjacent
828  // dimension, padding wouldn't generally work. So unless there becomes
829  // a way to turn padding off in the default view, a specialization
830  // will be necessary.
831 
832 public:
833 
834  //----------------------------------------
835  // Domain dimensions
836 
837  enum { Rank = Traits::dimension::rank };
838 
839  // Rank corresponding to the sacado dimension
840  enum { Sacado_Rank = std::is_same< typename Traits::array_layout, Kokkos::LayoutLeft >::value ? 0 : Rank+1 };
841 
842  // Using the internal offset mapping so limit to public rank:
843  template< typename iType >
844  KOKKOS_INLINE_FUNCTION constexpr size_t extent( const iType & r ) const
845  { return m_offset.m_dim.extent(r); }
846 
847  KOKKOS_INLINE_FUNCTION constexpr
848  typename Traits::array_layout layout() const
849  { return m_offset.layout(); }
850 
851  KOKKOS_INLINE_FUNCTION constexpr size_t dimension_0() const
852  { return m_offset.dimension_0(); }
853  KOKKOS_INLINE_FUNCTION constexpr size_t dimension_1() const
854  { return m_offset.dimension_1(); }
855  KOKKOS_INLINE_FUNCTION constexpr size_t dimension_2() const
856  { return m_offset.dimension_2(); }
857  KOKKOS_INLINE_FUNCTION constexpr size_t dimension_3() const
858  { return m_offset.dimension_3(); }
859  KOKKOS_INLINE_FUNCTION constexpr size_t dimension_4() const
860  { return m_offset.dimension_4(); }
861  KOKKOS_INLINE_FUNCTION constexpr size_t dimension_5() const
862  { return m_offset.dimension_5(); }
863  KOKKOS_INLINE_FUNCTION constexpr size_t dimension_6() const
864  { return m_offset.dimension_6(); }
865  KOKKOS_INLINE_FUNCTION constexpr size_t dimension_7() const
866  { return m_offset.dimension_7(); }
867 
868  // Is a regular layout with uniform striding for each index.
869  // Since we all for striding within the data type, we can't guarantee
870  // regular striding
871  using is_regular = std::false_type ;
872 
873  // FIXME: Adjust these for m_stride
874  KOKKOS_INLINE_FUNCTION constexpr size_t stride_0() const
875  { return m_offset.stride_0(); }
876  KOKKOS_INLINE_FUNCTION constexpr size_t stride_1() const
877  { return m_offset.stride_1(); }
878  KOKKOS_INLINE_FUNCTION constexpr size_t stride_2() const
879  { return m_offset.stride_2(); }
880  KOKKOS_INLINE_FUNCTION constexpr size_t stride_3() const
881  { return m_offset.stride_3(); }
882  KOKKOS_INLINE_FUNCTION constexpr size_t stride_4() const
883  { return m_offset.stride_4(); }
884  KOKKOS_INLINE_FUNCTION constexpr size_t stride_5() const
885  { return m_offset.stride_5(); }
886  KOKKOS_INLINE_FUNCTION constexpr size_t stride_6() const
887  { return m_offset.stride_6(); }
888  KOKKOS_INLINE_FUNCTION constexpr size_t stride_7() const
889  { return m_offset.stride_7(); }
890 
891  template< typename iType >
892  KOKKOS_INLINE_FUNCTION void stride( iType * const s ) const
893  { m_offset.stride(s); }
894 
895  // Size of sacado scalar dimension
896  KOKKOS_FORCEINLINE_FUNCTION constexpr unsigned dimension_scalar() const
897  { return m_sacado_size.value; }
898 
899  // Whether the storage type is statically sized
900  static const bool is_static = stokhos_storage_type::is_static ;
901 
902  // Whether sacado dimension is contiguous
903  static const bool is_contiguous = true;
904 
905  //----------------------------------------
906  // Range of mapping
907 
908  // Return type of reference operators
910 
913 
915  KOKKOS_INLINE_FUNCTION constexpr size_t span() const
916  { return m_offset.span(); }
917 
919  KOKKOS_INLINE_FUNCTION constexpr bool span_is_contiguous() const
920  { return m_offset.span_is_contiguous() && (m_stride == 1); }
921 
923  KOKKOS_INLINE_FUNCTION constexpr pointer_type data() const
924  { return m_handle.value_ptr ; }
925 
926  //----------------------------------------
927 
928  KOKKOS_FORCEINLINE_FUNCTION
930  { return *m_handle.value_ptr; }
931 
932  // FIXME: Check this
933  template< typename I0 >
934  KOKKOS_FORCEINLINE_FUNCTION
935  typename
936  std::enable_if< std::is_integral<I0>::value &&
937  ! std::is_same< typename Traits::array_layout , Kokkos::LayoutStride >::value
938  , reference_type >::type
939  reference( const I0 & i0 ) const
940  { return m_handle.value_ptr[m_stride * i0]; }
941 
942  // FIXME: Check this
943  template< typename I0 >
944  KOKKOS_FORCEINLINE_FUNCTION
945  typename
946  std::enable_if< std::is_integral<I0>::value &&
947  std::is_same< typename Traits::array_layout , Kokkos::LayoutStride >::value
948  , reference_type >::type
949  reference( const I0 & i0 ) const
950  { return m_handle.value_ptr[ m_stride * m_offset(i0) ]; }
951 
952  template< typename I0 , typename I1 >
953  KOKKOS_FORCEINLINE_FUNCTION
954  reference_type reference( const I0 & i0 , const I1 & i1 ) const
955  { return m_handle.value_ptr[ m_stride * m_offset(i0,i1) ]; }
956 
957  template< typename I0 , typename I1 , typename I2 >
958  KOKKOS_FORCEINLINE_FUNCTION
959  reference_type reference( const I0 & i0 , const I1 & i1 , const I2 & i2 ) const
960  { return m_handle.value_ptr[ m_stride * m_offset(i0,i1,i2) ]; }
961 
962  template< typename I0 , typename I1 , typename I2 , typename I3 >
963  KOKKOS_FORCEINLINE_FUNCTION
964  reference_type reference( const I0 & i0 , const I1 & i1 , const I2 & i2 , const I3 & i3 ) const
965  { return m_handle.value_ptr[ m_stride * m_offset(i0,i1,i2,i3) ]; }
966 
967  template< typename I0 , typename I1 , typename I2 , typename I3
968  , typename I4 >
969  KOKKOS_FORCEINLINE_FUNCTION
970  reference_type reference( const I0 & i0 , const I1 & i1 , const I2 & i2 , const I3 & i3
971  , const I4 & i4 ) const
972  { return m_handle.value_ptr[ m_stride * m_offset(i0,i1,i2,i3,i4) ]; }
973 
974  template< typename I0 , typename I1 , typename I2 , typename I3
975  , typename I4 , typename I5 >
976  KOKKOS_FORCEINLINE_FUNCTION
977  reference_type reference( const I0 & i0 , const I1 & i1 , const I2 & i2 , const I3 & i3
978  , const I4 & i4 , const I5 & i5 ) const
979  { return m_handle.value_ptr[ m_stride * m_offset(i0,i1,i2,i3,i4,i5) ]; }
980 
981  template< typename I0 , typename I1 , typename I2 , typename I3
982  , typename I4 , typename I5 , typename I6 >
983  KOKKOS_FORCEINLINE_FUNCTION
984  reference_type reference( const I0 & i0 , const I1 & i1 , const I2 & i2 , const I3 & i3
985  , const I4 & i4 , const I5 & i5 , const I6 & i6 ) const
986  { return m_handle.value_ptr[ m_stride * m_offset(i0,i1,i2,i3,i4,i5,i6) ]; }
987 
988  template< typename I0 , typename I1 , typename I2 , typename I3
989  , typename I4 , typename I5 , typename I6 , typename I7 >
990  KOKKOS_FORCEINLINE_FUNCTION
991  reference_type reference( const I0 & i0 , const I1 & i1 , const I2 & i2 , const I3 & i3
992  , const I4 & i4 , const I5 & i5 , const I6 & i6 , const I7 & i7 ) const
993  { return m_handle.value_ptr[ m_stride * m_offset(i0,i1,i2,i3,i4,i5,i6,i7) ]; }
994 
995  //----------------------------------------
996 
998  KOKKOS_INLINE_FUNCTION
999  static size_t memory_span( typename Traits::array_layout const & layout )
1000  {
1001  // Do not introduce padding...
1002  typedef std::integral_constant< unsigned , 0 > padding ;
1003  offset_type offset( padding(), layout );
1004  sacado_size_type sacado_size =
1006  return handle_type::memory_span( offset.span(), sacado_size.value );
1007  }
1008 
1009  //----------------------------------------
1010 
1011  KOKKOS_INLINE_FUNCTION ~ViewMapping() = default ;
1012  KOKKOS_INLINE_FUNCTION ViewMapping() :
1013  m_handle(),
1014  m_offset(),
1015  m_stride(1),
1016  m_sacado_size(0)
1017  {}
1018 
1019  KOKKOS_INLINE_FUNCTION ViewMapping( const ViewMapping & ) = default ;
1020  KOKKOS_INLINE_FUNCTION ViewMapping & operator = ( const ViewMapping & ) = default ;
1021 
1022  KOKKOS_INLINE_FUNCTION ViewMapping( ViewMapping && ) = default ;
1023  KOKKOS_INLINE_FUNCTION ViewMapping & operator = ( ViewMapping && ) = default ;
1024 
1025  template< class ... P >
1026  KOKKOS_INLINE_FUNCTION
1027  ViewMapping
1028  ( ViewCtorProp< P ... > const & prop
1029  , typename Traits::array_layout const & layout
1030  )
1031  : m_handle()
1032  , m_offset( std::integral_constant< unsigned , 0 >()
1033  , layout )
1034  , m_stride( 1 )
1035  , m_sacado_size( Kokkos::Impl::GetSacadoSize<unsigned(Rank)>::eval(layout) )
1036  {
1037  m_handle.set( ( (ViewCtorProp<void,pointer_type> const &) prop ).value,
1038  m_offset.span(), m_sacado_size.value );
1039  }
1040 
1041  //----------------------------------------
1042  /* Allocate and construct mapped array.
1043  * Allocate via shared allocation record and
1044  * return that record for allocation tracking.
1045  */
1046  template< class ... P >
1047  SharedAllocationRecord<> *
1048  allocate_shared( ViewCtorProp< P... > const & prop
1049  , typename Traits::array_layout const & layout )
1050  {
1051  typedef ViewCtorProp< P... > ctor_prop ;
1052 
1053  typedef typename ctor_prop::execution_space execution_space ;
1054  typedef typename Traits::memory_space memory_space ;
1055  typedef typename handle_type::template ConstructDestructFunctor<execution_space> functor_type ;
1056  typedef SharedAllocationRecord< memory_space , functor_type > record_type ;
1057 
1058  // Disallow padding
1059  typedef std::integral_constant< unsigned , 0 > padding ;
1060 
1061  m_offset = offset_type( padding(), layout );
1062  m_stride = 1;
1063  m_sacado_size = Kokkos::Impl::GetSacadoSize<unsigned(Rank)>::eval(layout);
1064 
1065  const size_t alloc_size =
1066  handle_type::memory_span( m_offset.span(), m_sacado_size.value );
1067 
1068  // Create shared memory tracking record with allocate memory from the memory space
1069  record_type * const record =
1070  record_type::allocate( ( (ViewCtorProp<void,memory_space> const &) prop ).value
1071  , ( (ViewCtorProp<void,std::string> const &) prop ).value
1072  , alloc_size );
1073 
1074  // Only set the the pointer and initialize if the allocation is non-zero.
1075  // May be zero if one of the dimensions is zero.
1076  if ( alloc_size ) {
1077 
1078  m_handle.set( reinterpret_cast< pointer_type >( record->data() ),
1079  m_offset.span(), m_sacado_size.value );
1080 
1081  // Assume destruction is only required when construction is requested.
1082  // The ViewValueFunctor has both value construction and destruction operators.
1083  record->m_destroy = m_handle.create_functor(
1084  ( (ViewCtorProp<void,execution_space> const &) prop).value
1085  , ctor_prop::initialize
1086  , m_offset.span()
1087  , m_sacado_size.value );
1088 
1089  // Construct values
1090  record->m_destroy.construct_shared_allocation();
1091  }
1092 
1093  return record ;
1094  }
1095 
1096  //----------------------------------------
1097  // If the View is to construct or destroy the elements.
1098 
1099  /*
1100  template< class ExecSpace >
1101  void construct( const ExecSpace & space ) const
1102  {
1103  m_handle.construct( space, m_offset.span(), m_sacado_size.value );
1104  }
1105 
1106  template< class ExecSpace >
1107  void destroy( const ExecSpace & space ) const
1108  {
1109  m_handle.destruct( space, m_offset.span(), m_sacado_size.value );
1110  }
1111  */
1112 };
1113 
1114 } // namespace Impl
1115 } // namespace Kokkos
1116 
1117 //----------------------------------------------------------------------------
1118 
1119 namespace Kokkos {
1120 namespace Impl {
1121 
1126 template< class DstTraits , class SrcTraits >
1127 class ViewMapping< DstTraits , SrcTraits ,
1128  typename std::enable_if<(
1129  Kokkos::Impl::MemorySpaceAccess< typename DstTraits::memory_space
1130  , typename SrcTraits::memory_space >::assignable
1131  &&
1132  // Destination view has MP::Vector
1133  std::is_same< typename DstTraits::specialize
1134  , Kokkos::Experimental::Impl::ViewMPVectorContiguous >::value
1135  &&
1136  // Source view has MP::Vector only
1137  std::is_same< typename SrcTraits::specialize
1138  , Kokkos::Experimental::Impl::ViewMPVectorContiguous >::value
1139  )>::type >
1140 {
1141 public:
1142 
1143  enum { is_assignable = true };
1144 
1145  typedef Kokkos::Impl::SharedAllocationTracker TrackType ;
1146  typedef ViewMapping< DstTraits , void > DstType ;
1147  typedef ViewMapping< SrcTraits , void > SrcType ;
1148 
1149  KOKKOS_INLINE_FUNCTION static
1150  void assign( DstType & dst
1151  , const SrcType & src
1152  , const TrackType & )
1153  {
1154  static_assert(
1155  (
1156  std::is_same< typename DstTraits::array_layout
1157  , Kokkos::LayoutLeft >::value ||
1158  std::is_same< typename DstTraits::array_layout
1159  , Kokkos::LayoutRight >::value ||
1160  std::is_same< typename DstTraits::array_layout
1161  , Kokkos::LayoutStride >::value
1162  )
1163  &&
1164  (
1165  std::is_same< typename SrcTraits::array_layout
1166  , Kokkos::LayoutLeft >::value ||
1167  std::is_same< typename SrcTraits::array_layout
1168  , Kokkos::LayoutRight >::value ||
1169  std::is_same< typename SrcTraits::array_layout
1170  , Kokkos::LayoutStride >::value
1171  )
1172  , "View of MP::Vector requires LayoutLeft, LayoutRight, or LayoutStride" );
1173 
1174  static_assert(
1175  std::is_same< typename DstTraits::array_layout
1176  , typename SrcTraits::array_layout >::value ||
1177  std::is_same< typename DstTraits::array_layout
1178  , Kokkos::LayoutStride >::value ||
1179  ( unsigned(DstTraits::rank) == 0 && unsigned(SrcTraits::rank) == 0 ) ||
1180  ( unsigned(DstTraits::rank) == 1 && unsigned(SrcTraits::rank) == 1 ) ,
1181  "View assignment must have compatible layout" );
1182 
1183  static_assert(
1184  std::is_same< typename DstTraits::value_type
1185  , typename SrcTraits::value_type >::value ||
1186  std::is_same< typename DstTraits::value_type
1187  , typename SrcTraits::const_value_type >::value ,
1188  "View assignment must have same value type or const = non-const" );
1189 
1190  static_assert(
1191  ViewDimensionAssignable
1192  < typename DstType::offset_type::dimension_type
1193  , typename SrcType::offset_type::dimension_type >::value ,
1194  "View assignment must have compatible dimensions" );
1195 
1196  dst.m_handle = src.m_handle ;
1197  dst.m_offset = src.m_offset ;
1198  dst.m_stride = src.m_stride ;
1199  dst.m_sacado_size = src.m_sacado_size ;
1200  }
1201 };
1202 
1208 template< class DstTraits , class SrcTraits >
1209 class ViewMapping< DstTraits , SrcTraits ,
1210  typename std::enable_if<(
1211  Kokkos::Impl::MemorySpaceAccess< typename DstTraits::memory_space
1212  , typename SrcTraits::memory_space >::assignable
1213  &&
1214  // Destination view has ordinary
1215  std::is_same< typename DstTraits::specialize , void >::value
1216  &&
1217  // Source view has MP::Vector only
1218  std::is_same< typename SrcTraits::specialize
1219  , Kokkos::Experimental::Impl::ViewMPVectorContiguous >::value
1220  &&
1221  // Ranks match
1222  unsigned(DstTraits::dimension::rank) == unsigned(SrcTraits::dimension::rank)+1
1223  )>::type >
1224 {
1225 public:
1226 
1227  enum { is_assignable = true };
1228 
1229  typedef Kokkos::Impl::SharedAllocationTracker TrackType ;
1230  typedef ViewMapping< DstTraits , void > DstType ;
1231  typedef ViewMapping< SrcTraits , void > SrcType ;
1232 
1233  KOKKOS_INLINE_FUNCTION static
1234  void assign( DstType & dst
1235  , const SrcType & src
1236  , const TrackType & )
1237  {
1238  static_assert(
1239  (
1240  std::is_same< typename DstTraits::array_layout
1241  , Kokkos::LayoutLeft >::value ||
1242  std::is_same< typename DstTraits::array_layout
1243  , Kokkos::LayoutRight >::value ||
1244  std::is_same< typename DstTraits::array_layout
1245  , Kokkos::LayoutStride >::value
1246  )
1247  &&
1248  (
1249  std::is_same< typename SrcTraits::array_layout
1250  , Kokkos::LayoutLeft >::value ||
1251  std::is_same< typename SrcTraits::array_layout
1252  , Kokkos::LayoutRight >::value ||
1253  std::is_same< typename SrcTraits::array_layout
1254  , Kokkos::LayoutStride >::value
1255  )
1256  , "View of MP::Vector requires LayoutLeft, LayoutRight, or LayoutStride" );
1257 
1258  static_assert(
1259  std::is_same< typename DstTraits::array_layout
1260  , typename SrcTraits::array_layout >::value ||
1261  std::is_same< typename DstTraits::array_layout
1262  , Kokkos::LayoutStride >::value ,
1263  "View assignment must have compatible layout" );
1264 
1265  static_assert(
1266  std::is_same< typename DstTraits::scalar_array_type
1267  , typename SrcTraits::scalar_array_type >::value ||
1268  std::is_same< typename DstTraits::scalar_array_type
1269  , typename SrcTraits::const_scalar_array_type >::value ,
1270  "View assignment must have same value type or const = non-const" );
1271 
1272  static_assert(
1273  ViewDimensionAssignable<
1274  typename DstType::offset_type::dimension_type,
1275  typename SrcType::array_offset_type::dimension_type >::value,
1276  "View assignment must have compatible dimensions" );
1277 
1278  if ( src.m_stride != 1 ) {
1279  Kokkos::abort("\n\n ****** Kokkos::View< Sacado::MP::Vector ... > cannot assign with non-unit stride ******\n\n");
1280  }
1281 
1282  unsigned dims[8];
1283  dims[0] = src.m_offset.dimension_0();
1284  dims[1] = src.m_offset.dimension_1();
1285  dims[2] = src.m_offset.dimension_2();
1286  dims[3] = src.m_offset.dimension_3();
1287  dims[4] = src.m_offset.dimension_4();
1288  dims[5] = src.m_offset.dimension_5();
1289  dims[6] = src.m_offset.dimension_6();
1290  dims[7] = src.m_offset.dimension_7();
1291  unsigned rank = SrcTraits::dimension::rank;
1292  unsigned sacado_size = src.m_sacado_size.value;
1293  if (std::is_same<typename SrcTraits::array_layout, LayoutLeft>::value) {
1294  // Move sacado_size to the first dimension, shift all others up one
1295  for (unsigned i=rank; i>0; --i)
1296  dims[i] = dims[i-1];
1297  dims[0] = sacado_size;
1298  }
1299  else {
1300  dims[rank] = sacado_size;
1301  }
1302  typedef typename DstType::offset_type dst_offset_type;
1303  dst.m_offset = dst_offset_type( std::integral_constant< unsigned , 0 >(),
1304  typename DstTraits::array_layout(
1305  dims[0] , dims[1] , dims[2] , dims[3] ,
1306  dims[4] , dims[5] , dims[6] , dims[7] ) );
1307  dst.m_handle = src.m_handle.scalar_ptr ;
1308  }
1309 };
1310 
1317 template< class DstTraits , class SrcTraits >
1318 class ViewMapping< DstTraits , SrcTraits ,
1319  typename std::enable_if<(
1320  Kokkos::Impl::MemorySpaceAccess< typename DstTraits::memory_space
1321  , typename SrcTraits::memory_space >::assignable
1322  &&
1323  // Destination view has ordinary
1324  std::is_same< typename DstTraits::specialize , void >::value
1325  &&
1326  // Source view has MP::Vector only
1327  std::is_same< typename SrcTraits::specialize
1328  , Kokkos::Experimental::Impl::ViewMPVectorContiguous >::value
1329  &&
1330  // Ranks match
1331  unsigned(DstTraits::dimension::rank) == unsigned(SrcTraits::dimension::rank)
1332  )>::type >
1333 {
1334 public:
1335 
1336  enum { is_assignable = true };
1337 
1338  typedef Kokkos::Impl::SharedAllocationTracker TrackType ;
1339  typedef ViewMapping< DstTraits , void > DstType ;
1340  typedef ViewMapping< SrcTraits , void > SrcType ;
1341 
1342  KOKKOS_INLINE_FUNCTION static
1343  void assign( DstType & dst
1344  , const SrcType & src
1345  , const TrackType & )
1346  {
1347  static_assert(
1348  (
1349  std::is_same< typename DstTraits::array_layout
1350  , Kokkos::LayoutLeft >::value ||
1351  std::is_same< typename DstTraits::array_layout
1352  , Kokkos::LayoutRight >::value ||
1353  std::is_same< typename DstTraits::array_layout
1354  , Kokkos::LayoutStride >::value
1355  )
1356  &&
1357  (
1358  std::is_same< typename SrcTraits::array_layout
1359  , Kokkos::LayoutLeft >::value ||
1360  std::is_same< typename SrcTraits::array_layout
1361  , Kokkos::LayoutRight >::value ||
1362  std::is_same< typename SrcTraits::array_layout
1363  , Kokkos::LayoutStride >::value
1364  )
1365  , "View of MP::Vector requires LayoutLeft, LayoutRight, or LayoutStride" );
1366 
1367  static_assert(
1368  std::is_same< typename DstTraits::array_layout
1369  , typename SrcTraits::array_layout >::value ||
1370  std::is_same< typename DstTraits::array_layout
1371  , Kokkos::LayoutStride >::value ,
1372  "View assignment must have compatible layout" );
1373 
1374  static_assert(
1375  std::is_same< typename DstTraits::value_type
1376  , typename SrcTraits::non_const_value_type::value_type >::value ||
1377  std::is_same< typename DstTraits::value_type
1378  , const typename SrcTraits::non_const_value_type::value_type >::value ,
1379  "View assignment must have same value type or const = non-const" );
1380 
1381  static_assert(
1382  ViewDimensionAssignable<
1383  typename DstType::offset_type::dimension_type,
1384  typename SrcType::offset_type::dimension_type >::value,
1385  "View assignment must have compatible dimensions" );
1386 
1387  if ( src.m_stride != 1 ) {
1388  Kokkos::abort("\n\n ****** Kokkos::View< Sacado::MP::Vector ... > cannot assign with non-unit stride ******\n\n");
1389  }
1390 
1391  unsigned dims[8];
1392  dims[0] = src.m_offset.dimension_0();
1393  dims[1] = src.m_offset.dimension_1();
1394  dims[2] = src.m_offset.dimension_2();
1395  dims[3] = src.m_offset.dimension_3();
1396  dims[4] = src.m_offset.dimension_4();
1397  dims[5] = src.m_offset.dimension_5();
1398  dims[6] = src.m_offset.dimension_6();
1399  dims[7] = src.m_offset.dimension_7();
1400  unsigned rank = SrcTraits::dimension::rank;
1401  unsigned sacado_size = src.m_sacado_size.value;
1402  if (std::is_same<typename DstTraits::array_layout, LayoutLeft>::value) {
1403  dims[0] = dims[0]*sacado_size;
1404  dims[rank] = 0;
1405  }
1406  else {
1407  dims[rank-1] = dims[rank-1]*sacado_size;
1408  dims[rank] = 0;
1409  }
1410  typedef typename DstType::offset_type dst_offset_type;
1411  dst.m_offset = dst_offset_type( std::integral_constant< unsigned , 0 >(),
1412  typename DstTraits::array_layout(
1413  dims[0] , dims[1] , dims[2] , dims[3] ,
1414  dims[4] , dims[5] , dims[6] , dims[7] ) );
1415  dst.m_handle = src.m_handle.scalar_ptr ;
1416  }
1417 };
1418 
1419 } // namespace Impl
1420 } // namespace Kokkos
1421 
1422 //----------------------------------------------------------------------------
1423 
1424 namespace Kokkos {
1425 namespace Impl {
1426 
1427 // Subview mapping
1428 
1429 template< class DataType, class ... P , class Arg0, class ... Args >
1430 struct ViewMapping
1431  < typename std::enable_if<(
1432  // Source view has MP::Vector only
1433  std::is_same< typename Kokkos::ViewTraits<DataType,P...>::specialize
1434  , Kokkos::Experimental::Impl::ViewMPVectorContiguous >::value
1435  &&
1436  (
1437  std::is_same< typename Kokkos::ViewTraits<DataType,P...>::array_layout
1438  , Kokkos::LayoutLeft >::value ||
1439  std::is_same< typename Kokkos::ViewTraits<DataType,P...>::array_layout
1440  , Kokkos::LayoutRight >::value ||
1441  std::is_same< typename Kokkos::ViewTraits<DataType,P...>::array_layout
1442  , Kokkos::LayoutStride >::value
1443  )
1444  && !Sacado::MP::is_vector_partition<Arg0>::value
1445  )>::type
1446  , Kokkos::ViewTraits<DataType,P...>
1447  , Arg0, Args ... >
1448 {
1449 private:
1450 
1451  typedef Kokkos::ViewTraits<DataType,P...> SrcTraits;
1452 
1453  //static_assert( SrcTraits::rank == sizeof...(Args) , "" );
1454 
1455  enum
1456  { RZ = false
1457  , R0 = bool(is_integral_extent<0,Arg0,Args...>::value)
1458  , R1 = bool(is_integral_extent<1,Arg0,Args...>::value)
1459  , R2 = bool(is_integral_extent<2,Arg0,Args...>::value)
1460  , R3 = bool(is_integral_extent<3,Arg0,Args...>::value)
1461  , R4 = bool(is_integral_extent<4,Arg0,Args...>::value)
1462  , R5 = bool(is_integral_extent<5,Arg0,Args...>::value)
1463  , R6 = bool(is_integral_extent<6,Arg0,Args...>::value)
1464  };
1465 
1466  // Public rank
1467  enum { rank = unsigned(R0) + unsigned(R1) + unsigned(R2) + unsigned(R3)
1468  + unsigned(R4) + unsigned(R5) + unsigned(R6) };
1469 
1470  // Whether right-most non-MP::Vector rank is a range.
1471  enum { R0_rev = ( 0 == SrcTraits::rank ? RZ : (
1472  1 == SrcTraits::rank ? R0 : (
1473  2 == SrcTraits::rank ? R1 : (
1474  3 == SrcTraits::rank ? R2 : (
1475  4 == SrcTraits::rank ? R3 : (
1476  5 == SrcTraits::rank ? R4 : (
1477  6 == SrcTraits::rank ? R5 : R6 ))))))) };
1478 
1479  // Subview's layout
1480  typedef typename std::conditional<
1481  ( /* Same array layout IF */
1482  ( rank == 0 ) /* output rank zero */
1483  ||
1484  // OutputRank 1 or 2, InputLayout Left, Interval 0
1485  // because single stride one or second index has a stride.
1486  ( rank <= 2 && R0 && std::is_same< typename SrcTraits::array_layout , Kokkos::LayoutLeft >::value )
1487  ||
1488  // OutputRank 1 or 2, InputLayout Right, Interval [InputRank-1]
1489  // because single stride one or second index has a stride.
1490  ( rank <= 2 && R0_rev && std::is_same< typename SrcTraits::array_layout , Kokkos::LayoutRight >::value )
1491  ), typename SrcTraits::array_layout , Kokkos::LayoutStride
1493 
1495 
1496  typedef typename std::conditional< rank == 0 , sacado_mp_vector_type ,
1497  typename std::conditional< rank == 1 , sacado_mp_vector_type * ,
1498  typename std::conditional< rank == 2 , sacado_mp_vector_type ** ,
1499  typename std::conditional< rank == 3 , sacado_mp_vector_type *** ,
1500  typename std::conditional< rank == 4 , sacado_mp_vector_type **** ,
1501  typename std::conditional< rank == 5 , sacado_mp_vector_type ***** ,
1502  typename std::conditional< rank == 6 , sacado_mp_vector_type ****** ,
1503  sacado_mp_vector_type *******
1506 
1507 public:
1508 
1509  typedef Kokkos::ViewTraits
1510  < data_type
1511  , array_layout
1512  , typename SrcTraits::device_type
1513  , typename SrcTraits::memory_traits > traits_type ;
1514 
1515  typedef Kokkos::View
1516  < data_type
1517  , array_layout
1518  , typename SrcTraits::device_type
1519  , typename SrcTraits::memory_traits > type ;
1520 
1521 
1522  // The presumed type is 'ViewMapping< traits_type , void >'
1523  // However, a compatible ViewMapping is acceptable.
1524  template< class DstTraits >
1525  KOKKOS_INLINE_FUNCTION
1526  static void assign( ViewMapping< DstTraits , void > & dst
1527  , ViewMapping< SrcTraits , void > const & src
1528  , Arg0 arg0, Args ... args )
1529  {
1530  static_assert(
1531  ViewMapping< DstTraits , traits_type , void >::is_assignable ,
1532  "Subview destination type must be compatible with subview derived type" );
1533 
1534  typedef ViewMapping< DstTraits , void > DstType ;
1535  typedef typename DstType::offset_type dst_offset_type ;
1536 
1537  const SubviewExtents< SrcTraits::rank , rank >
1538  extents( src.m_offset.m_dim , arg0 , args... );
1539 
1540  const size_t offset = src.m_offset( extents.domain_offset(0)
1541  , extents.domain_offset(1)
1542  , extents.domain_offset(2)
1543  , extents.domain_offset(3)
1544  , extents.domain_offset(4)
1545  , extents.domain_offset(5)
1546  , extents.domain_offset(6)
1547  , extents.domain_offset(7) );
1548 
1549  dst.m_offset = dst_offset_type( src.m_offset , extents );
1550  dst.m_handle.value_ptr = src.m_handle.value_ptr + offset;
1551  dst.m_handle.scalar_ptr =
1552  src.m_handle.scalar_ptr + offset * src.m_stride * src.m_sacado_size.value;
1553  dst.m_stride = src.m_stride;
1554  dst.m_sacado_size = src.m_sacado_size;
1555  }
1556 
1557 };
1558 
1559 } // namespace Impl
1560 } // namespace Kokkos
1561 
1562 //----------------------------------------------------------------------------
1563 //----------------------------------------------------------------------------
1564 //----------------------------------------------------------------------------
1565 
1566 namespace Kokkos {
1567 namespace Impl {
1568 
1569 // Partition mapping
1570 
1571 template< class DataType, class ...P, unsigned Size >
1572 class ViewMapping<
1573  void,
1574  ViewTraits<DataType,P...> ,
1575  Sacado::MP::VectorPartition<Size> >
1576 {
1577 public:
1578 
1579  enum { is_assignable = true };
1580 
1581  typedef ViewTraits<DataType,P...> src_traits;
1582  typedef ViewMapping< src_traits , void > src_type ;
1583 
1584  typedef typename src_type::offset_type::dimension_type src_dimension;
1587  typedef typename storage_type::template apply_N<Size> storage_apply;
1588  typedef typename storage_apply::type strided_storage_type;
1590  typedef typename
1591  ViewDataType< strided_value_type , src_dimension >::type strided_data_type;
1592  typedef ViewTraits<strided_data_type,P...> dst_traits;
1593  typedef View<strided_data_type,P...> type;
1594  typedef ViewMapping< dst_traits , void > dst_type ;
1595 
1596  KOKKOS_INLINE_FUNCTION static
1597  void assign( dst_type & dst
1598  , const src_type & src
1599  , const Sacado::MP::VectorPartition<Size> & part )
1600  {
1601  // The pointer assignments below are not sufficient for dynamically sized
1602  // scalar types, so disallow this case for now
1603  static_assert( storage_type::is_static,
1604  "For performance reasons, partitioned assignment is only implemented for statically-sized MP::Vector types" );
1605 
1606  unsigned len = part.end - part.begin;
1607  if ( Size != len || Size == 0 ) {
1608  Kokkos::abort("\n\n ****** Kokkos::View< Sacado::MP::Vector ... > Invalid size in partitioned view assignment ******\n\n");
1609  }
1610 
1611  dst.m_handle.value_ptr =
1612  reinterpret_cast<strided_value_type*>( src.m_handle.value_ptr ) +
1613  part.begin / len ;
1614  dst.m_handle.scalar_ptr = src.m_handle.scalar_ptr +
1615  (part.begin / len) * src.m_stride * src.m_sacado_size.value ;
1616  dst.m_offset = src.m_offset ;
1617  dst.m_stride = src.m_stride * src.m_sacado_size.value / Size ;
1618  dst.m_sacado_size = len ;
1619  }
1620 };
1621 
1622 } // namespace Impl
1623 } // namespace Kokkos
1624 
1625 namespace Kokkos {
1626 
1627 template< unsigned Size, typename D, typename ... P >
1628 KOKKOS_INLINE_FUNCTION
1629 typename Kokkos::Impl::ViewMapping< void, typename Kokkos::ViewTraits<D,P...>, Sacado::MP::VectorPartition<Size> >::type
1630 partition( const Kokkos::View<D,P...> & src ,
1631  const unsigned beg )
1632 {
1633  typedef Kokkos::ViewTraits<D,P...> traits;
1634  typedef typename Kokkos::Impl::ViewMapping< void, traits, Sacado::MP::VectorPartition<Size> >::type DstViewType;
1635  const Sacado::MP::VectorPartition<Size> part( beg , beg+Size );
1636  return DstViewType(src, part);
1637 }
1638 
1639 } // namespace Kokkos
1640 
1641 //----------------------------------------------------------------------------
1642 //----------------------------------------------------------------------------
1643 //----------------------------------------------------------------------------
1644 
1645 namespace Kokkos {
1646 namespace Impl {
1647 
1648 // Specialization for deep_copy( view, view::value_type ) for Cuda
1649 #if defined( KOKKOS_ENABLE_CUDA )
1650 template< class OutputView >
1651 struct StokhosViewFill< OutputView ,
1652  typename std::enable_if< std::is_same< typename OutputView::specialize,
1653  Kokkos::Experimental::Impl::ViewMPVectorContiguous >::value &&
1654  std::is_same< typename OutputView::execution_space,
1655  Cuda >::value >::type >
1656 {
1657  typedef typename OutputView::const_value_type const_value_type ;
1658  typedef typename OutputView::execution_space execution_space ;
1659  typedef typename OutputView::size_type size_type ;
1660 
1661  template <unsigned VectorLength>
1662  struct Kernel {
1663  typedef typename OutputView::execution_space execution_space ;
1664  const OutputView output;
1666 
1667  Kernel( const OutputView & arg_out , const_value_type & arg_in ) :
1668  output(arg_out), input(arg_in) {}
1669 
1670  typedef typename Kokkos::TeamPolicy< execution_space >::member_type team_member ;
1671 
1672  KOKKOS_INLINE_FUNCTION
1673  void operator()( const team_member & dev ) const
1674  {
1675  const size_type tidx = dev.team_rank() % VectorLength;
1676  const size_type tidy = dev.team_rank() / VectorLength;
1677  const size_type nrow = dev.team_size() / VectorLength;
1678  const size_type nvec = dimension_scalar(output);
1679 
1680  const size_type i0 = dev.league_rank() * nrow + tidy;
1681  if ( i0 >= output.extent(0) ) return;
1682 
1683  for ( size_type i1 = 0 ; i1 < output.extent(1) ; ++i1 ) {
1684  for ( size_type i2 = 0 ; i2 < output.extent(2) ; ++i2 ) {
1685  for ( size_type i3 = 0 ; i3 < output.extent(3) ; ++i3 ) {
1686  for ( size_type i4 = 0 ; i4 < output.extent(4) ; ++i4 ) {
1687  for ( size_type i5 = 0 ; i5 < output.extent(5) ; ++i5 ) {
1688  for ( size_type i6 = 0 ; i6 < output.extent(6) ; ++i6 ) {
1689  for ( size_type i7 = 0 ; i7 < output.extent(7) ; ++i7 ) {
1690  for ( size_type is = tidx ; is < nvec ; is+=VectorLength ) {
1691  output.access(i0,i1,i2,i3,i4,i5,i6,i7).fastAccessCoeff(is) =
1692  input.fastAccessCoeff(is) ;
1693  }}}}}}}}
1694  }
1695  };
1696 
1697  StokhosViewFill( const OutputView & output , const_value_type & input )
1698  {
1699  if ( Sacado::is_constant(input) ) {
1700  deep_copy( output , input.fastAccessCoeff(0) );
1701  }
1702  else {
1703 
1704  // Coalesced accesses are 128 bytes in size
1706  const unsigned vector_length =
1707  ( 128 + sizeof(scalar_type)-1 ) / sizeof(scalar_type);
1708 
1709  // 8 warps per block should give good occupancy
1710  const size_type block_size = 256;
1711 
1712  const size_type rows_per_block = block_size / vector_length;
1713  const size_type n = output.extent(0);
1714  const size_type league_size = ( n + rows_per_block-1 ) / rows_per_block;
1715  const size_type team_size = rows_per_block * vector_length;
1716  Kokkos::TeamPolicy< execution_space > config( league_size, team_size );
1717 
1718  parallel_for( config, Kernel<vector_length>(output, input) );
1719  execution_space::fence();
1720  }
1721  }
1722 
1723 };
1724 #endif /* #if defined( KOKKOS_ENABLE_CUDA ) */
1725 
1726 } // namespace Impl
1727 } // namespace Kokkos
1728 
1729 //----------------------------------------------------------------------------
1730 //----------------------------------------------------------------------------
1731 //----------------------------------------------------------------------------
1732 
1733 namespace Kokkos {
1734 namespace Impl {
1735 
1736 struct ViewSpecializeSacadoFad;
1737 
1744 template< class DstTraits , class SrcTraits >
1745 class ViewMapping< DstTraits , SrcTraits ,
1746  typename std::enable_if<(
1747  Kokkos::Impl::MemorySpaceAccess< typename DstTraits::memory_space
1748  , typename SrcTraits::memory_space >::assignable
1749  &&
1750  // Destination view has MP::Vector only
1751  std::is_same< typename DstTraits::specialize
1752  , Kokkos::Experimental::Impl::ViewMPVectorContiguous >::value
1753  &&
1754  // Source view has FAD only
1755  std::is_same< typename SrcTraits::specialize
1756  , ViewSpecializeSacadoFad >::value
1757  )>::type >
1758 {
1759 public:
1760 
1761  enum { is_assignable = true };
1762 
1763  typedef Kokkos::Impl::SharedAllocationTracker TrackType ;
1764  typedef ViewMapping< DstTraits , void > DstType ;
1765  typedef ViewMapping< SrcTraits , void > SrcFadType ;
1766 
1767  template< class DstType >
1768  KOKKOS_INLINE_FUNCTION static
1769  void assign( DstType & dst
1770  , const SrcFadType & src
1771  , const TrackType & )
1772  {
1773  static_assert(
1774  (
1775  std::is_same< typename DstTraits::array_layout
1776  , Kokkos::LayoutLeft >::value ||
1777  std::is_same< typename DstTraits::array_layout
1778  , Kokkos::LayoutRight >::value ||
1779  std::is_same< typename DstTraits::array_layout
1780  , Kokkos::LayoutStride >::value
1781  )
1782  &&
1783  (
1784  std::is_same< typename SrcTraits::array_layout
1785  , Kokkos::LayoutLeft >::value ||
1786  std::is_same< typename SrcTraits::array_layout
1787  , Kokkos::LayoutRight >::value ||
1788  std::is_same< typename SrcTraits::array_layout
1789  , Kokkos::LayoutStride >::value
1790  )
1791  , "View of FAD requires LayoutLeft, LayoutRight, or LayoutStride" );
1792 
1793  static_assert(
1794  std::is_same< typename DstTraits::array_layout
1795  , typename SrcTraits::array_layout >::value ||
1796  std::is_same< typename DstTraits::array_layout
1797  , Kokkos::LayoutStride >::value ,
1798  "View assignment must have compatible layout" );
1799 
1800  static_assert(
1801  std::is_same< typename DstTraits::data_type
1802  , typename SrcTraits::scalar_array_type >::value ||
1803  std::is_same< typename DstTraits::data_type
1804  , typename SrcTraits::const_scalar_array_type >::value ,
1805  "View assignment must have same value type or const = non-const" );
1806 
1807  static_assert(
1808  ViewDimensionAssignable
1809  < typename DstType::offset_type::dimension_type
1810  , typename SrcFadType::array_offset_type::dimension_type >::value ,
1811  "View assignment must have compatible dimensions" );
1812 
1813  typedef typename DstType::offset_type dst_offset_type ;
1814 
1815  dst.m_offset = dst_offset_type( src.m_array_offset );
1816  dst.m_handle.assign(src.m_handle) ;
1817  dst.m_stride = 1;
1818 
1819  // Don't need to set dst.m_sacado_size since it is determined statically
1820  static_assert( DstType::is_static,
1821  "Destination view must be statically allocated" );
1822  }
1823 };
1824 
1825 } // namespace Impl
1826 } // namespace Kokkos
1827 
1828 //----------------------------------------------------------------------------
1829 //----------------------------------------------------------------------------
1830 //----------------------------------------------------------------------------
1831 
1832 #include "Kokkos_View_Utils_Def.hpp"
1833 
1834 #endif /* #ifndef KOKKOS_EXPERIMENTAL_VIEW_MP_VECTOR_CONTIGUOUS_HPP */
static KOKKOS_INLINE_FUNCTION void assign(dst_type &dst, const src_type &src, const Sacado::MP::VectorPartition< Size > &part)
KOKKOS_INLINE_FUNCTION MPVectorAllocation & operator=(const MPVectorAllocation< T, true > &a)
Stokhos::StandardStorage< int, double > storage_type
static KOKKOS_INLINE_FUNCTION constexpr size_t memory_span(const size_t span, const unsigned vector_size)
KOKKOS_INLINE_FUNCTION MPVectorAllocation & operator=(const MPVectorAllocation< T, false > &a)
Kokkos::DefaultExecutionSpace execution_space
std::conditional< std::is_same< ArrayLayout, Kokkos::LayoutLeft >::value, prepend_scalar_dimension, append_scalar_dimension >::type scalar_dimension
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
ConstructDestructFunctor< ExecSpace > create_functor(const ExecSpace &space, const bool initialize, const size_t span, const unsigned vector_size) const
OutputView::const_value_type const_value_type
VectorConstruct(const ExecSpace &space, value_type *p, scalar_type *sp, const size_t span, const unsigned vector_size)
static KOKKOS_INLINE_FUNCTION constexpr size_t memory_span(const size_t span, const unsigned vector_size)
KOKKOS_INLINE_FUNCTION constexpr std::enable_if< is_view_uq_pce< View< T, P... > >::value, unsigned >::type dimension_scalar(const View< T, P... > &view)
OutputView::execution_space execution_space
KOKKOS_INLINE_FUNCTION void operator()(const size_t i0) const
KOKKOS_INLINE_FUNCTION bool is_constant(const T &x)
void deep_copy(const Stokhos::CrsMatrix< ValueType, DstDevice, Layout > &dst, const Stokhos::CrsMatrix< ValueType, SrcDevice, Layout > &src)
StokhosViewFill(const OutputView &arg_out, const_value_type &arg_in)
ConstructDestructFunctor(const ExecSpace &space, const bool initialize, const size_t span, const unsigned vector_size, scalar_type *scalar_ptr, value_type *value_ptr)
ConstructDestructFunctor(const ExecSpace &space, const bool initialize, const size_t span, const unsigned vector_size, scalar_type *scalar_ptr)
KOKKOS_INLINE_FUNCTION Kokkos::Impl::ViewMapping< void, typename Kokkos::ViewTraits< D, P... >, Sacado::MP::VectorPartition< Size > >::type partition(const Kokkos::View< D, P... > &src, const unsigned beg)
Stokhos::CrsMatrix< ValueType, Device, Layout >::HostMirror create_mirror(const Stokhos::CrsMatrix< ValueType, Device, Layout > &A)
ConstructDestructFunctor< ExecSpace > create_functor(const ExecSpace &space, const bool initialize, const size_t span, const unsigned vector_size) const