Kokkos::resize

Kokkos::resize

Header File: Kokkos_Core.hpp

Usage:

resize(view,n0,n1,n2,n3);
resize(view,layout);

Reallocates a view to have the new dimensions. Can grow or shrink, and will preserve content of the common subextents.

Synopsis

template <class T, class... P>
void resize(View<T, P...>& v,
        const size_t n0 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
        const size_t n1 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
        const size_t n2 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
        const size_t n3 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
        const size_t n4 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
        const size_t n5 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
        const size_t n6 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
        const size_t n7 = KOKKOS_IMPL_CTOR_DEFAULT_ARG);

template <class I, class T, class... P>
void resize(const I& arg_prop, Kokkos::View<T, P...>& v,
       const size_t n0 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
       const size_t n1 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
       const size_t n2 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
       const size_t n3 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
       const size_t n4 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
       const size_t n5 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
       const size_t n6 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
       const size_t n7 = KOKKOS_IMPL_CTOR_DEFAULT_ARG);

template <class T, class... P>
void resize(Kokkos::View<T, P...>& v,
       const typename Kokkos::View<T, P...>::array_layout& layout);

template <class I, class T, class... P>
void resize(const I& arg_prop, Kokkos::View<T, P...>& v,
       const typename Kokkos::View<T, P...>::array_layout& layout);

Description

• template <class T, class... P>
  void resize(View<T, P...>& v,
        const size_t n0 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
        const size_t n1 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
        const size_t n2 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
        const size_t n3 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
        const size_t n4 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
        const size_t n5 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
        const size_t n6 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
        const size_t n7 = KOKKOS_IMPL_CTOR_DEFAULT_ARG);

  Resizes v to have the new dimensions while preserving the contents for the common subview of the old and new view.

  • v: existing view, can be a default constructed one.
  • n[X]: new length for extent X.

  Restrictions:

  • View<T, P...>::array_layout is either LayoutLeft or LayoutRight.

• template <class I, class T, class... P>
  void resize(const I& arg_prop, Kokkos::View<T, P...>& v,
         const size_t n0 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
         const size_t n1 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
         const size_t n2 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
         const size_t n3 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
         const size_t n4 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
         const size_t n5 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
         const size_t n6 = KOKKOS_IMPL_CTOR_DEFAULT_ARG,
         const size_t n7 = KOKKOS_IMPL_CTOR_DEFAULT_ARG);

  Resizes v to have the new dimensions while preserving the contents for the common subview of the old and new view. The new Kokkos::View is constructed using the View constructor property arg_prop, e.g., Kokkos::WithoutInitializing.

  • v: existing view, can be a default constructed one.
  • n[X]: new length for extent X.
  • arg_prop: View constructor property, e.g., Kokkos::WithoutInitializing.

  Restrictions:

  • View<T, P...>::array_layout is either LayoutLeft or LayoutRight.

• template <class T, class... P>
  void resize(Kokkos::View<T, P...>& v,
         const typename Kokkos::View<T, P...>::array_layout& layout);

  Resizes v to have the new dimensions while preserving the contents for the common subview of the old and new view.

  • v: existing view, can be a default constructed one.
  • layout: a layout instance containing the new dimensions.

• template <class T, class... P>
  void resize(const I& arg_prop, Kokkos::View<T, P...>& v,
         const typename Kokkos::View<T, P...>::array_layout& layout);

  Resizes v to have the new dimensions while preserving the contents for the common subview of the old and new view. The new Kokkos::View is constructed using the View constructor property arg_prop, e.g., Kokkos::WithoutInitializing.

  • v: existing view, can be a default constructed one.
  • layout: a layout instance containing the new dimensions.
  • arg_prop: View constructor property, e.g., Kokkos::WithoutInitializing.

Example:

• Kokkos::resize(v, 2, 3);

  Resize a Kokkos::View with dynamic rank 2 to have dynamic extent 2 and 3 respectively preserving previous content.

• Kokkos::resize(Kokkos::WithoutInitializing, v, 2, 3);

  Resize a Kokkos::View with dynamic rank 2 to have dynamic extent 2 and 3 respectively preserving previous content. After this call, the new content is uninitialized.