dear teachers:

         In orte_globals.h, there is a data structure.

typedef struct {
    /* index to node */
    int32_t node;
    /* local rank */
    orte_local_rank_t local_rank;
    /* node rank */
    orte_node_rank_t node_rank;
} orte_pmap_t;

And I do not understand what both local_rank and node_rank exactly mean. Is local_rank similar to the rank of MPI Specification. Can you help me? My motivation is to achieve process migration in openmpi, I urgently want to the procedure of launching process.