MPI_File_iread_at
Nonblocking read using explict offsetSynopsis
#ifdef HAVE_MPI_GREQUEST
#include "mpiu_greq.h"
#endif
int MPI_File_iread_at(MPI_File mpi_fh, MPI_Offset offset, void *buf,
int count, MPI_Datatype datatype,
MPIO_Request *request)
Input Parameters
- fh
- file handle (handle)
- offset
- file offset (nonnegative integer)
- count
- number of elements in buffer (nonnegative integer)
- datatype
- datatype of each buffer element (handle)
Output Parameters
- buf
- initial address of buffer (choice)
- request
- request object (handle)
Notes for Fortran
All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK) have an additional argument ierr at the end of the argument list. ierr is an integer and has the same meaning as the return value of the routine in C. In Fortran, MPI routines are subroutines, and are invoked with the call statement.All MPI objects (e.g., MPI_Datatype, MPI_Comm) are of type INTEGER in Fortran.
Location:iread_at.c