DeprecationPage

Deprecated Functionality in Kokkos 2.7

Compile Time Detectable

Deprecated Feature	Replaced By	Reason for Removal
View<>::dimension_X()	View<>::extent(X)	Alignment with C++ standard
View<>::dimension(X)	View<>::extent(X)	Alignment with C++ standard
View<>::capacity()	View<>::span(X)	Alignment with C++ standard
View<>::operator()(Args...) with # of Args != View<>::rank	View<>::access(Args...)	Frequent source of hard to detect bugs in user code.
View<>::View(Arg,N0,...,N7) with # of N Args != View<>::rank_dynamic	Either fix number of arguments, or create a meta function to produce layout with correct number of arguments. Note you can also use the implementation detail macro KOKKOS_IMPL_CTOR_DEFAULT_ARG for arguments larger rank_dynamic. But there is no backwards compatibility guarantee on that.	Frequent source of hard to detect bugs in user code.
ExecSpace::is_initialized()	Kokkos::is_initialized()	Too many possibilities of organizing Kokkos initialization: now streamlined interface.
ExecSpace::initialize(...)	Kokkos::initialize(...) Note: certain overloads are gone	Too many possibilities of organizing Kokkos initialization: now streamlined interface.
ExecSpace::print_configuration(...)	Kokkos::print_configuration(...)	Too many possibilities of organizing Kokkos initialization: now streamlined interface.
ExecSpace::max_hardware_thread_id()	ExecSpace::concurrency()	Removal of execution space specific interfaces in favor of more general ones which work for all of them.
ExecSpace::hardware_thread_id()	Use Kokkos::UniqueToken	Removal of execution space specific interfaces in favor of more general ones which work for all of them.
KOKKOS_HAVE_...	KOKKOS_ENABLE_...	Harmonization of Macro Names
KOKKOS_HAVE_PTHREAD	KOKKOS_ENABLE_THREADS	Harmonization of Macro Names
KOKKOS_HAVE_CXX11	Not necessary anymore

Deprecated RunTime Behaviour

Deprecated Feature	Replaced By	Reason for Removal
deep_copy(A,B) with A and B having not-matching dimensions	deep_copy(subview(A,...),subview(B,...))	Frequent source of hard to detect bugs in user code.
TeamPolicy<>(N,team_size) with team_size larger than supported	previously this adjusted team_size to maximum possible value, now this errors out. Use AUTO if team_size shall be adjustable.	Frequent source of hard to detect bugs in user code.