ompi_mpi_comm_world_addr 64 ompi/communicator/comm_init.c ompi_predefined_communicator_t *ompi_mpi_comm_world_addr = ompi_mpi_comm_world_addr 303 ompi/communicator/communicator.h OMPI_DECLSPEC extern ompi_predefined_communicator_t *ompi_mpi_comm_world_addr;