MPI_File_read_shared(3) MPI-2 MPI_File_read_shared(3)NAME
MPI_File_read_shared - Read using shared file pointer
SYNOPSIS
#include "mpi.h"
int MPI_File_read_shared(MPI_File fh, void *buf, int count,
MPI_Datatype datatype, MPI_Status *status)
INPUT PARAMETERS
fh - file handle (handle)
count - number of elements in buffer (nonnegative integer)
datatype
- datatype of each buffer element (handle)
OUTPUT PARAMETERS
buf - initial address of buffer (choice)
status - status object (Status)
NOTES FOR FORTRAN
All MPI routines in Fortran (except for 'MPI_WTIME' and 'MPI_WTICK') have an additional argument 'ierr' at the end of the argument list.
the routine in C. In Fortran, MPI routines are subroutines and are invoked with the 'call' statement.
All MPI objects (e.g., 'MPI_Datatype', 'MPI_Comm', 'MPI_File') are of type 'INTEGER' in Fortran.
9/3/1998 MPI_File_read_shared(3)
Check Out this Related Man Page
MPI_Get_count(3) MPI MPI_Get_count(3)NAME
MPI_Get_count - Gets the number of "top level" elements
SYNOPSIS
int MPI_Get_count( MPI_Status *status, MPI_Datatype datatype, int *count )
INPUT PARAMETERS
status - return status of receive operation (Status)
datatype
- datatype of each receive buffer element (handle)
OUTPUT PARAMETER
count - number of received elements (integer) Notes: If the size of the datatype is zero, this routine will return a count of zero. If
the amount of data in status is not an exact multiple of the size of datatype (so that count would not be integral), a count of
MPI_UNDEFINED is returned instead.
NOTES FOR FORTRAN
All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK ) have an additional argument ierr at the end of the argument list. ierr
is an integer and has the same meaning as the return value of the routine in C. In Fortran, MPI routines are subroutines, and are invoked
with the call statement.
All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in Fortran.
ERRORS
All MPI routines (except MPI_Wtime and MPI_Wtick ) return an error value; C routines as the value of the function and Fortran routines in
the last argument. Before the value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI
job. The error handler may be changed with MPI_Comm_set_errhandler (for communicators), MPI_File_set_errhandler (for files), and
MPI_Win_set_errhandler (for RMA windows). The MPI-1 routine MPI_Errhandler_set may be used but its use is deprecated. The predefined
error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarentee that an MPI program can
continue past an error; however, MPI implementations will attempt to continue whenever possible.
MPI_SUCCESS
- No error; MPI routine completed successfully.
MPI_ERR_TYPE
- Invalid datatype argument. May be an uncommitted MPI_Datatype (see MPI_Type_commit ).
LOCATION
get_count.c
7/30/2010 MPI_Get_count(3)
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