`device_id`¶

Defined in header <Kokkos_Core.hpp>

Usage¶

Kokkos::device_id();

Returns the id of the device that is used by DefaultExecutionSpace, or -1 if only host backends are enabled.

Interface¶

[[nodiscard]] int device_id() noexcept¶

Returns:: The id of the device used by DefaultExecutionSpace, or -1 if only host backends are enabled.

Added in version 4.1.

Example¶

#include <Kokkos_Core.hpp>
#include <iostream>

int main(int argc, char* argv[]) {
    Kokkos::initialize(argc, argv);
    {
      std::cout << "device_id: " << Kokkos::device_id() << '\n';
    }
    Kokkos::finalize();
}

See Also¶

See also

num_devices: Returns the number of devices available to Kokkos
num_threads: Returns the number of threads used by Kokkos
print_configuration: Prints Kokkos configuration information to an output stream
initialize: Initialize the Kokkos execution environment
InitializationSettings: Settings for initializing Kokkos