MPI_File_iwrite_all - Writes a file starting at the location specified by the individual file pointer (nonblocking, collective).
220.127.116.11.1. C Syntax
#include <mpi.h> int MPI_File_iwrite_all(MPI_File fh, const void *buf, int count, MPI_Datatype datatype, MPI_Request *request)
18.104.22.168.2. Fortran Syntax
USE MPI ! or the older form: INCLUDE 'mpif.h' MPI_FILE_IWRITE_ALL(FH, BUF, COUNT, DATATYPE, REQUEST, IERROR) <type> BUF(*) INTEGER FH, COUNT, DATATYPE, REQUEST, IERROR
22.214.171.124.3. Fortran 2008 Syntax
USE mpi_f08 MPI_File_iwrite_all(fh, buf, count, datatype, request, ierror) TYPE(MPI_File), INTENT(IN) :: fh TYPE(*), DIMENSION(..) :: buf INTEGER, INTENT(IN) :: count TYPE(MPI_Datatype), INTENT(IN) :: datatype TYPE(MPI_Request), INTENT(OUT) :: request INTEGER, OPTIONAL, INTENT(OUT) :: ierror
126.96.36.199. INPUT/OUTPUT PARAMETER
fh: File handle (handle).
188.8.131.52. INPUT PARAMETERS
buf: Initial address of buffer (choice).
count: Number of elements in buffer (integer).
datatype: Data type of each buffer element (handle).
184.108.40.206. OUTPUT PARAMETER
request: Request object (handle).
IERROR: Fortran only: Error status (integer).
MPI_File_iwrite_all is a nonblocking version of the MPI_File_write_all interface. It 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. MPI_File_iwrite_all stores the number of datatype elements actually written in status. All other fields of status are undefined.
It is erroneous to call this function if MPI_MODE_SEQUENTIAL mode was specified when the file was open.
Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument.
Before the error value is returned, the current MPI error handler is called. For MPI I/O function errors, the default error handler is set 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.