Function mpi::init_null

pub fn init_null() -> i32

Calls MPI_Init with null parameters. As of MPI-2, MPI_Init will accept NULL as input parameters. Must be called before any other mpi function is called.

Panics

When called multiple times. When called without finalize at end of program.

Examples

// Valid
init_null();
finalize();

// Invalid
init_null();
init_null();
finalize();

// Invalid without finalize
init_null();