1MPI_Comm_set_attr(3) LAM/MPI MPI_Comm_set_attr(3)
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6 MPI_Comm_set_attr - MPI_ATTR_PUT replacement
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9 #include <mpi.h>
10 int
11 MPI_Comm_set_attr(MPI_Comm comm, int key, void *value)
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14 comm - Communicator to which the attribute will be attached
15 key - Key value
16 value - Attribute value
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20 All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK ) have
21 an additional argument ierr at the end of the argument list. ierr is
22 an integer and has the same meaning as the return value of the routine
23 in C. In Fortran, MPI routines are subroutines, and are invoked with
24 the call statement.
25 All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in
27 Fortran.
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31 If an error occurs in an MPI function, the current MPI error handler is
32 called to handle it. By default, this error handler aborts the MPI
33 job. The error handler may be changed with MPI_Errhandler_set ; the
34 predefined error handler MPI_ERRORS_RETURN may be used to cause error
35 values to be returned (in C and Fortran; this error handler is less
36 useful in with the C++ MPI bindings. The predefined error handler
37 MPI::ERRORS_THROW_EXCEPTIONS should be used in C++ if the error value
38 needs to be recovered). Note that MPI does not guarantee that an MPI
39 program can continue past an error.
40 All MPI routines (except MPI_Wtime and MPI_Wtick ) return an error
42 value; C routines as the value of the function and Fortran routines in
43 the last argument. The C++ bindings for MPI do not return error val‐
44 ues; instead, error values are communicated by throwing exceptions of
45 type MPI::Exception (but not by default). Exceptions are only thrown
46 if the error value is not MPI::SUCCESS .
47 Note that if the MPI::ERRORS_RETURN handler is set in C++, while MPI
50 functions will return upon an error, there will be no way to recover
51 what the actual error value was.
52 MPI_SUCCESS
53 - No error; MPI routine completed successfully.
54 MPI_ERR_COMM
55 - Invalid communicator. A common error is to use a null commu‐
56 nicator in a call (not even allowed in MPI_Comm_rank ).
57 MPI_ERR_OTHER
58 - Other error; the error code associated with this error indi‐
59 cates an attempt to use an invalue keyval.
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63 MPI_Comm_create_keyval(3), MPI_Comm_free_keyval(3),
64 MPI_Comm_get_attr(3), MPI_Comm_delete_attr(3)
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68 For more information, please see the official MPI Forum web site, which
69 contains the text of both the MPI-1 and MPI-2 standards. These docu‐
70 ments contain detailed information about each MPI function (most of
71 which is not duplicated in these man pages).
72 http://www.mpi-forum.org/
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76 csetattr.c
77LAM/MPI 7.1.2 2/23/2006 MPI_Comm_set_attr(3)