bproc_rfork is a combination of fork and bproc_move. bproc_rfork has the same semantics as fork. bproc_rfork creates a copy of the calling process on another node.
On success, bproc_rfork returns the process ID of the child to the parent process and zero to the child process. On error, bproc_rfork returns -1 to the parent process and errno will be set appropriately.