MPI_FILE_READ_AT_ALL_BEGIN(3)MPI_FILE_READ_AT_ALL_BEGIN(3)NAMEMPI_File_read_at_all_begin - Begin a split collective read using explict
offset
SYNOPSIS
C:
#include <mpi.h>
int MPI_File_read_at_all_begin( fh, offset, buf,
count, datatype )
MPI_File fh;
MPI_Offset offset;
void *buf;
int count;
MPI_Datatype datatype;
Fortran:
INCLUDE "mpif.h" (or USE MPI)
<type> buf(*)
INTEGER fh, count, datatype, ierror
INTEGER(KIND=MPI_OFFSET_KIND) offset
CALL MPI_FILE_READ_AT_ALL_BEGIN(fh, offset, buf, count,
datatype, ierror)
STANDARDS
This release implements the MPI 2.0 standard, as documented by the MPI
Forum in the July 1997 release of MPI: A Message Passing Interface
Standard.
DESCRIPTIONMPI_File_read_at_all_begin begins a split collective read using an
explict offset. This routine accepts the following parameters:
fh file handle (handle)
offset file offset (nonnegative integer)
buf initial address of buffer (choice)
count number of elements in buffer (nonnegative integer)
datatype datatype of each buffer element (handle)
Page 1
MPI_FILE_READ_AT_ALL_BEGIN(3)MPI_FILE_READ_AT_ALL_BEGIN(3)Fortran Programs
All MPI routines in Fortran (except for MPI_WTIME(3F) and MPI_WTICK(3F))
have the additional argument ierror at the end of the argument list.
ierror 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 (such as MPI_Datatype(3) and MPI_Comm(3)) are of type
INTEGER in Fortran.
SEE ALSOMPI_Comm(3), MPI_Datatype(3)MPI_WTIME(3F), MPI_WTICK(3F)
Page 2