MPI_Get
Get data from a remote process
Synopsis
int MPI_Get(void *origin_addr, int origin_count, MPI_Datatype
origin_datatype, int target_rank, MPI_Aint target_disp,
int target_count, MPI_Datatype target_datatype, MPI_Win
win)
Input Parameters
- origin_addr
- Address of the buffer in which to receive the data
- origin_count
- number of entries in origin buffer (nonnegative integer)
- origin_datatype
- datatype of each entry in origin buffer (handle)
- target_rank
- rank of target (nonnegative integer)
- target_disp
- displacement from window start to the beginning of the
target buffer (nonnegative integer)
- target_count
- number of entries in target buffer (nonnegative integer)
- target_datatype
- datatype of each entry in target buffer (handle)
- win
- window object used for communication (handle)
Output Parameter
- origin_addr
- initial address of origin buffer (choice)
Notes
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 deprecatd. 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_ARG
- Invalid argument. Some argument is invalid and is not
identified by a specific error class (e.g., MPI_ERR_RANK).
- MPI_ERR_TYPE
- Invalid datatype argument. May be an uncommitted
MPI_Datatype (see MPI_Type_commit).
- MPI_ERR_WIN
- Invalid MPI window object
Location:get.c