1MPI_Type_commit(3) LAM/MPI MPI_Type_commit(3)
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6 MPI_Type_commit - Commits the datatype
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9 #include <mpi.h>
10 int MPI_Type_commit(MPI_Datatype *dtype)
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13 dtype - datatype (handle)
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17 All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK ) have
18 an additional argument ierr at the end of the argument list. ierr is
19 an integer and has the same meaning as the return value of the routine
20 in C. In Fortran, MPI routines are subroutines, and are invoked with
21 the call statement.
22 All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in
24 Fortran.
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28 If an error occurs in an MPI function, the current MPI error handler is
29 called to handle it. By default, this error handler aborts the MPI
30 job. The error handler may be changed with MPI_Errhandler_set ; the
31 predefined error handler MPI_ERRORS_RETURN may be used to cause error
32 values to be returned (in C and Fortran; this error handler is less
33 useful in with the C++ MPI bindings. The predefined error handler
34 MPI::ERRORS_THROW_EXCEPTIONS should be used in C++ if the error value
35 needs to be recovered). Note that MPI does not guarantee that an MPI
36 program can continue past an error.
37 All MPI routines (except MPI_Wtime and MPI_Wtick ) return an error
39 value; C routines as the value of the function and Fortran routines in
40 the last argument. The C++ bindings for MPI do not return error val‐
41 ues; instead, error values are communicated by throwing exceptions of
42 type MPI::Exception (but not by default). Exceptions are only thrown
43 if the error value is not MPI::SUCCESS .
44 Note that if the MPI::ERRORS_RETURN handler is set in C++, while MPI
47 functions will return upon an error, there will be no way to recover
48 what the actual error value was.
49 MPI_SUCCESS
50 - No error; MPI routine completed successfully.
51 MPI_ERR_ARG
52 - Invalid argument. Some argument is invalid and is not identi‐
53 fied by a specific error class. This is typically a NULL
54 pointer or other such error.
55 MPI_ERR_TYPE
56 - Invalid datatype argument. May be an uncommitted MPI_Datatype
57 (see MPI_Type_commit ).
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61 For more information, please see the official MPI Forum web site, which
62 contains the text of both the MPI-1 and MPI-2 standards. These docu‐
63 ments contain detailed information about each MPI function (most of
64 which is not duplicated in these man pages).
65 http://www.mpi-forum.org/
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71 The LAM Team would like the thank the MPICH Team for the handy program
72 to generate man pages ("doctext" from ftp://ftp.mcs.anl.gov/pub/sow‐
73 ing/sowing.tar.gz ), the initial formatting, and some initial text for
74 most of the MPI-1 man pages.
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77 tcommit.c
78LAM/MPI 7.1.2 2/23/2006 MPI_Type_commit(3)