io_module_file_write_all_begin  353 ompi/mca/io/io.h     mca_io_base_module_file_write_all_begin_fn_t      io_module_file_write_all_begin;
io_module_file_write_all_begin   75 ompi/mpi/c/file_write_all_begin.c           io_module_file_write_all_begin(fh, buf, count, datatype);