17.2.123. MPI_File_iwrite_shared
MPI_File_iwrite_shared - Writes a file using the shared file pointer (nonblocking, noncollective).
17.2.123.1. SYNTAX
17.2.123.1.1. C Syntax
#include <mpi.h>
int MPI_File_iwrite_shared(MPI_File fh, const void *buf, int count, MPI_Datatype
datatype, MPI_Request *request)
17.2.123.1.2. Fortran Syntax
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_FILE_IWRITE_SHARED(FH, BUF, COUNT, DATATYPE, REQUEST, IERROR)
<type> BUF(*)
INTEGER FH, COUNT, DATATYPE, REQUEST, IERROR
17.2.123.1.3. Fortran 2008 Syntax
USE mpi_f08
MPI_File_iwrite_shared(fh, buf, count, datatype, request, ierror)
TYPE(MPI_File), INTENT(IN) :: fh
TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: buf
INTEGER, INTENT(IN) :: count
TYPE(MPI_Datatype), INTENT(IN) :: datatype
TYPE(MPI_Request), INTENT(OUT) :: request
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
17.2.123.2. INPUT/OUTPUT PARAMETER
fh: File handle (handle).
17.2.123.3. INPUT PARAMETERS
count: Number of elements in buffer (integer).datatype: Data type of each buffer element (handle).
17.2.123.4. OUTPUT PARAMETERS
buf: Initial address of buffer (choice).request: Request object (handle).IERROR: Fortran only: Error status (integer).
17.2.123.5. DESCRIPTION
MPI_File_iwrite_shared is a nonblocking routine that uses the shared file pointer to write files. The order of serialization is not deterministic for this noncollective routine, so you need to use other methods of synchronization to impose a particular order.
17.2.123.6. ERRORS
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.