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finalize - Kokkos documentation

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finalize¶

Defined in header <Kokkos_Core.hpp>

Usage:

Terminates the Kokkos execution environment. This functions cleans up all Kokkos states and released the associated resources. Once this function is called, no Kokkos API functions (not even Kokkos::initialize) may be called, except for Kokkos::is_initialized or Kokkos::is_finalized. The user must ensure that all Kokkos objects (e.g. Kokkos::View) are destroyed before Kokkos::finalize gets called.

Programs are ill-formed if they do not call this function after calling Kokkos::initialize.

Interface¶ Requirements¶

Kokkos::finalize must be called before MPI_Finalize if Kokkos is used in an MPI context.
Kokkos::finalize must be called after user initialized Kokkos objects are out of scope.

Semantics¶

Kokkos::is_initialized() should return false after calling Kokkos::finalize

Example¶

#include <Kokkos_Core.hpp>

int main(int argc, char* argv[]) {
    Kokkos::initialize(argc, argv);
    {  // scope to ensure that my_view destructor is called before Kokkos::finalize
        Kokkos::View<double*> my_view("my_view", 10);
    }  // scope of my_view ends here
    Kokkos::finalize();
}