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Kokkos::printf¶
Defined in header <Kokkos_Printf.hpp> which is included from <Kokkos_Core.hpp>
template <typename... Args> KOKKOS_FUNCTION void printf(const char* format, Args... args); // (since 4.2)
Prints the data specified in format and args... to stdout. The behavior is analogous to std::printf, but the return type is void to ensure a consistent behavior across backends.
#include <Kokkos_Core.hpp>
int main(int argc, char* argv[]) {
Kokkos::initialize(argc, argv);
Kokkos::parallel_for(4, KOKKOS_LAMBDA(int i) {
Kokkos::printf("hello world from thread %d\n", i);
});
Kokkos::finalize();
}
Notes¶
The Kokkos::printf() function was added in release 4.2
Calling Kokkos::printf() from a kernel may affect register usage and affect performance.
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