Home Man
Search
Today's Posts
Register

Linux & Unix Commands - Search Man Pages

RedHat 9 (Linux i386) - man page for mpi_group_range_excl (redhat section 3)

MPI_Group_range_excl(3) 			       LAM/MPI				      MPI_Group_range_excl(3)

NAME
MPI_Group_range_excl - Produces a group by excluding ranges of processes from an existing group
SYNOPSIS
#include <mpi.h> int MPI_Group_range_excl(MPI_Group g, int n, int ranges[][3], MPI_Group *png)
INPUT PARAMETERS
group - group (handle) n - number of elements in array ranges (integer) ranges - a one-dimensional array of integer triplets of the form (first rank, last rank, stride), indicating the ranks in g of processes to be excluded from the output group png .
OUTPUT PARAMETER
png - new group derived from above, preserving the order in group (handle)
NOTE
Each of the ranks to exclude must be a valid rank in the group and all elements must be distinct or the func- tion is erroneous. When a group is no longer being used, it should be freed with MPI_Group_free .
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
If an error occurs in an MPI function, the current MPI error handler is called to handle it. By default, this error handler aborts the MPI job. The error handler may be changed with MPI_Errhandler_set ; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned (in C and Fortran; this error handler is less useful in with the C++ MPI bindings. The predefined error handler MPI::ERRORS_THROW_EXCEP- TIONS should be used in C++ if the error value needs to be recovered). Note that MPI does not guarantee that an MPI program can continue past an error. All MPI routines (except MPI_Wtime and MPI_Wtick ) return an error value; C routines as the value of the func- tion and Fortran routines in the last argument. The C++ bindings for MPI do not return error values; instead, error values are communicated by throwing exceptions of type MPI::Exception (but not by default). Exceptions are only thrown if the error value is not MPI::SUCCESS . Note that if the MPI::ERRORS_RETURN handler is set in C++, while MPI functions will return upon an error, there will be no way to recover what the actual error value was. MPI_SUCCESS - No error; MPI routine completed successfully. MPI_ERR_GROUP - Null group passed to function. MPI_ERR_OTHER - This error is returned when some part of the LAM/MPI implementation is unable to acquire memory. MPI_ERR_RANK - Invalid source or destination rank. Ranks must be between zero and the size of the communicator minus one; ranks in a receive ( MPI_Recv , MPI_Irecv , MPI_Sendrecv , etc.) may also be MPI_ANY_SOURCE . MPI_ERR_ARG - Invalid argument. Some argument is invalid and is not identified by a specific error class. This is typically a NULL pointer or other such error.
SEE ALSO
MPI_Group_free
MORE INFORMATION
For more information, please see the official MPI Forum web site, which contains the text of both the MPI-1 and MPI-2 standards. These documents contain detailed information about each MPI function (most of which is not duplicated in these man pages). http://www.mpi-forum.org/
ACKNOWLEDGEMENTS
The LAM Team would like the thank the MPICH Team for the handy program to generate man pages ("doctext" from ftp://ftp.mcs.anl.gov/pub/sowing/sowing.tar.gz ), the initial formatting, and some initial text for most of the MPI-1 man pages.
LOCATION
grexcl.c
LAM
/MPI 6.5.8 11/10/2002 MPI_Group_range_excl(3)


All times are GMT -4. The time now is 07:33 PM.

Unix & Linux Forums Content Copyrightę1993-2018. All Rights Reserved.
UNIX.COM Login
Username:
Password:  
Show Password