kokkos.hpp

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#ifndef KOKKOS_EXECUTION_TESTS_UTILS_KOKKOS_HPP
#define KOKKOS_EXECUTION_TESTS_UTILS_KOKKOS_HPP
 
#include <concepts>
#include <iostream>
#include <string_view>
 
#include "Kokkos_Core.hpp"
 
namespace Tests::Utils {
 
template <Kokkos::ExecutionSpace Exec, Kokkos::ExecutionSpace OtherExec>
bool are_same_instances(const Exec& exec, const OtherExec& other_exec) {
    if constexpr (std::same_as<Exec, OtherExec>) {
        return exec == other_exec;
    } else {
        return false;
    }
}
 
template <Kokkos::ExecutionSpace Exec>
constexpr bool on_device() {
#if defined(KOKKOS_ENABLE_CUDA)
    return std::same_as<Exec, Kokkos::Cuda>;
#elif defined(KOKKOS_ENABLE_HIP)
    return std::same_as<Exec, Kokkos::HIP>;
#else
    return false;
#endif
}
 
template <Kokkos::ExecutionSpace Exec>
void show_exec_space_id(const Exec& exec, std::string_view label = "", std::ostream& out = std::cout) {
    out << "Execution space instance " << label << " has device ID " << Kokkos::Tools::Experimental::device_id(exec)
        << '.' << std::endl;
}

template <typename ViewType>
requires(ViewType::rank() == 1)
auto span_from(const ViewType& view) noexcept {
    return std::span{view.data(), view.size()};
}
 
} // namespace Tests::Utils
 
#endif // KOKKOS_EXECUTION_TESTS_UTILS_KOKKOS_HPP