mpi_file_write(3openmpi) [osx man page]

MPI_File_write(3OpenMPI)												  MPI_File_write(3OpenMPI)

NAME

       MPI_File_write - Writes a file starting at the location specified by the individual file pointer (blocking, noncollective).

SYNTAX

       C Syntax
	   #include <mpi.h>
	   int MPI_File_write(MPI_File fh, void *buf,
	    int count, MPI_Datatype datatype,
	    MPI_Status *status)

       Fortran Syntax
	   INCLUDE 'mpif.h'
	   MPI_FILE_WRITE(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(const void* buf, int count,
	    const MPI::Datatype& datatype, MPI::Status& status)

       void MPI::File::Write(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 PARAMETERS

       status	 Status object (status).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       MPI_File_write  attempts  to write into the file associated with fh (at the current individual file pointer position maintained by the sys-
       tem) 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 stores the number of datatype elements actually written in status.  All other fields of sta-
       tus 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++ func-
       tions  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.

Open MPI 1.2							  September 2006					  MPI_File_write(3OpenMPI)

Check Out this Related Man Page

MPI_File_read_shared(3OpenMPI)											    MPI_File_read_shared(3OpenMPI)

NAME

       MPI_File_read_shared - Reads a file using the shared file pointer (blocking, noncollective).

SYNTAX

       C Syntax
	   #include <mpi.h>
	   int MPI_File_read_shared(MPI_File fh, void *buf, int count,
       MPI_Datatype datatype, MPI_Status *status)

       Fortran Syntax
	   INCLUDE 'mpif.h'
	   MPI_FILE_READ_SHARED(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::Read_shared(void* buf, int count,
	    const MPI::Datatype& datatype, MPI::Status& status)

       void MPI::File::Read_shared(void* buf, int count,
	    const MPI::Datatype& datatype)

INPUT
/OUTPUT PARAMETER
       fh	 File handle (handle).

INPUT PARAMETERS

       count	 Number of elements in buffer (integer)

       datatype  Data type of each buffer element (handle).

OUTPUT PARAMETERS

       buf	 Initial address of buffer (choice).

       status	 Status object (status).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       MPI_File_read_shared is a blocking routine that uses the shared file pointer to read files. The order of serialization is not deterministic
       for this noncollective routine.

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++ func-
       tions  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.

Open MPI 1.2							  September 2006				    MPI_File_read_shared(3OpenMPI)

Linux and UNIX Man Pages

mpi_file_write(3openmpi) [osx man page]

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