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NAME
MPI_File_write_all_begin - Writes a file starting at the locations
specified by individual file pointers; beginning part of a split col-
lective routine (nonblocking).
SYNTAX
C Syntax
#include <mpi.h>
int MPI_File_write_all_begin(MPI_File fh, void *buf,
int count, MPI_Datatype datatype)
Fortran Syntax
INCLUDE 'mpif.h'
MPI_FILE_WRITE_ALL_BEGIN(FH, BUF, COUNT, DATATYPE, IERROR)
<type> BUF(*)
INTEGER FH, COUNT, DATATYPE, IERROR
C++ Syntax
#include <mpi.h>
void MPI::File::Write_all_begin(const void* buf, int count,
const MPI::Datatype& datatype)
INPUT/OUTPUT PARAMETER
fh File handle (handle).
INPUT PARAMETERS
buf Initial address of buffer (choice).
count Number of elements in buffer (integer).
datatype Data type of each buffer element (handle).
OUTPUT PARAMETER
IERROR Fortran only: Error status (integer).
DESCRIPTION
MPI_File_write_all_begin is the beginning part of a split collective,
nonblocking routine that attempts to write into the file associated
with fh (at the current individual file pointer position maintained by
the system) a total number of count data items having datatype type
from the user's buffer buf. The data is written into those parts of
the file specified by the current view.
NOTES
All the nonblocking collective routines for data access are "split"
into two routines, each with _begin or _end as a suffix. These split
collective routines are subject to the semantic rules described in Sec-
tion 9.4.5 of the MPI-2 standard.
ERRORS
to MPI_ERRORS_RETURN. The error handler may be changed with
MPI_File_set_errhandler; the predefined error handler
MPI_ERRORS_ARE_FATAL may be used to make I/O errors fatal. Note that
MPI does not guarantee that an MPI program can continue past an error.
Open MPI 1.2 September 20MPI_File_write_all_begin(3OpenMPI)
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