#if defined(_OSU_MVAPICH_) extern int split_comm; int enable_shmem_collectives = 1; int disable_shmem_allreduce=0; int disable_shmem_reduce=0; int disable_shmem_barrier=0; int use_two_level_gather=1; int use_direct_gather=1; int use_two_level_scatter=1; int use_direct_scatter=1; int g_shmem_bcast_leaders = DEFAULT_SHMEM_BCAST_LEADERS; int g_shmem_bcast_flags = DEFAULT_SHMEM_BCAST_LEADERS; int gather_direct_system_size_small = GATHER_DIRECT_SYSTEM_SIZE_SMALL; int gather_direct_system_size_medium = GATHER_DIRECT_SYSTEM_SIZE_MEDIUM; extern int g_shmem_coll_blocks; extern int g_shmem_coll_max_msg_size; extern int shmem_bcast_threshold; extern int bcast_short_msg_threshold; extern int enable_shmem_bcast; void MV2_Read_env_vars(void); void init_thread_reg(); extern int check_split_comm(pthread_t); extern int disable_split_comm(pthread_t); extern void create_2level_comm (MPI_Comm, int, int); extern int enable_split_comm(pthread_t); int tune_parameter=0; /* Runtime threshold for scatter */ int user_scatter_small_msg = 0; int user_scatter_medium_msg = 0; /* Runtime threshold for scatter */ int user_gather_switch_point = 0; struct coll_runtime coll_param =
All MPI routines (except MPI_Wtime and MPI_Wtick) return an error value; C routines as the value of the function and Fortran routines in the last argument. Before the value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job. The error handler may be changed with MPI_Comm_set_errhandler (for communicators), MPI_File_set_errhandler (for files), and MPI_Win_set_errhandler (for RMA windows). The MPI-1 routine MPI_Errhandler_set may be used but its use is deprecated. The predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarentee that an MPI program can continue past an error; however, MPI implementations will attempt to continue whenever possible.
Location:initthread.c