1MPI_Comm_delete_attr(3)             LAM/MPI            MPI_Comm_delete_attr(3)
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NAME

6       MPI_Comm_delete_attr -  Delete an attribute
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SYNOPSIS

9       #include <mpi.h>
10       int
11       MPI_Comm_delete_attr(MPI_Comm comm, int key)
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INPUT PARAMETERS

14       comm   - Communicator from which the attribute is deleted
15       key    - Key value
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NOTES FOR FORTRAN

19       All  MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK ) have
20       an additional argument ierr at the end of the argument list.   ierr  is
21       an  integer and has the same meaning as the return value of the routine
22       in C.  In Fortran, MPI routines are subroutines, and are  invoked  with
23       the call statement.
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25       All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in
26       Fortran.
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ERRORS

30       If an error occurs in an MPI function, the current MPI error handler is
31       called  to  handle  it.   By default, this error handler aborts the MPI
32       job.  The error handler may be changed with  MPI_Errhandler_set  ;  the
33       predefined  error  handler MPI_ERRORS_RETURN may be used to cause error
34       values to be returned (in C and Fortran; this  error  handler  is  less
35       useful  in  with  the  C++  MPI bindings.  The predefined error handler
36       MPI::ERRORS_THROW_EXCEPTIONS should be used in C++ if the  error  value
37       needs  to  be recovered).  Note that MPI does not guarantee that an MPI
38       program can continue past an error.
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40       All MPI routines (except MPI_Wtime and  MPI_Wtick  )  return  an  error
41       value;  C routines as the value of the function and Fortran routines in
42       the last argument.  The C++ bindings for MPI do not return  error  val‐
43       ues;  instead,  error values are communicated by throwing exceptions of
44       type MPI::Exception (but not by default).  Exceptions are  only  thrown
45       if the error value is not MPI::SUCCESS .
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48       Note  that  if  the MPI::ERRORS_RETURN handler is set in C++, while MPI
49       functions will return upon an error, there will be no  way  to  recover
50       what the actual error value was.
51       MPI_SUCCESS
52              - No error; MPI routine completed successfully.
53       MPI_ERR_COMM
54              -  Invalid communicator.  A common error is to use a null commu‐
55              nicator in a call (not even allowed in MPI_Comm_rank ).
56       MPI_ERR_OTHER
57              - Other error; the error code associated with this  error  indi‐
58              cates an attempt to use an invalue keyval.
59       MPI_ERR_INTERN
60              -  An  internal error has been detected.  This is fatal.  Please
61              send a bug report to the LAM mailing list  (see  http://www.lam-
62              mpi.org/contact.php ).
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SEE ALSO

66       MPI_Comm_create_keyval(3),                     MPI_Comm_free_keyval(3),
67       MPI_Comm_set_attr(3), MPI_Comm_get_attr(3)
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MORE INFORMATION

71       For more information, please see the official MPI Forum web site, which
72       contains  the  text of both the MPI-1 and MPI-2 standards.  These docu‐
73       ments contain detailed information about each  MPI  function  (most  of
74       which is not duplicated in these man pages).
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76       http://www.mpi-forum.org/
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LOCATION

79       cdelattr.c
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83LAM/MPI 7.1.2                      2/23/2006           MPI_Comm_delete_attr(3)