`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.

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);

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, class... ViewCtorArgs>
void resize(const Impl::ViewCtorProp<ViewCtorArgs...>& 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 properties arg_prop, e.g., Kokkos::view_alloc(Kokkos::WithoutInitializing). If arg_prop includes an execution space, it is used for allocating memory and for copying elements without using a final fence.

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

Restrictions:

View<T, P...>::array_layout is either LayoutLeft or LayoutRight.
arg_prop must not include a pointer to memory, a label, or a memory space.

```
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.
```
template <class T, class... P, class... ViewCtorArgs>
void resize(const Impl::ViewCtorProp<ViewCtorArgs...>& 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 properties arg_prop, e.g., Kokkos::view_alloc(Kokkos::WithoutInitializing). If arg_prop includes an execution space, it is used for allocating memory and for copying elements without using a final fence.
- v: existing view, can be a default constructed one.
- layout: a layout instance containing the new dimensions.
- arg_prop: View constructor properties, e.g., Kokkos::view_alloc(Kokkos::WithoutInitializing).
Restrictions:
- arg_prop must not include a pointer to memory, a label, or a memory space.

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.

resize#

Usage#

Description#

Example:#

`resize`#