SYNTAX
C Syntax #include <mpi.h> int MPI_File_write_all(MPI_File fh, const void *buf, int count, MPI_Datatype datatype, MPI_Status *status)
Fortran Syntax
INCLUDE 'mpif.h' MPI_FILE_WRITE_ALL(FH, BUF, COUNT, DATATYPE, STATUS, IERROR) <type> BUF(*) INTEGER FH, COUNT, DATATYPE, STATUS(MPI_STATUS_SIZE), IERROR
C++ Syntax
#include <mpi.h> void MPI::File::Write_all(const void* buf, int count, const MPI::Datatype& datatype, MPI::Status& status) void MPI::File::Write_all(const void* buf, int count, const MPI::Datatype& datatype)
INPUT PARAMETERS
- fh
- File handle (handle).
- buf
- Initial address of buffer (choice).
- count
- Number of elements in buffer (integer).
- datatype
-
Data type of each buffer element (handle).
OUTPUT PARAMETERS
- status
- Status object (status).
- IERROR
-
Fortran only: Error status (integer).
DESCRIPTION
MPI_File_write_all is a collective 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. MPI_File_write_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 opened.
ERRORS
Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ functions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to throw an MPI::Exception object.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.