[97] | 1 | .\"Copyright 2006-2008 Sun Microsystems, Inc. |
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| 2 | .\" Copyright (c) 1996 Thinking Machines Corporation |
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| 3 | .TH MPI_Group_incl 3 "Dec 08, 2009" "1.4" "Open MPI" |
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| 4 | .SH NAME |
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| 5 | \fBMPI_Group_incl \fP \- Produces a group by reordering an existing group and taking only listed members. |
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| 6 | |
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| 7 | .SH SYNTAX |
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| 8 | .ft R |
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| 9 | .SH C Syntax |
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| 10 | .nf |
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| 11 | #include <mpi.h> |
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| 12 | int MPI_Group_incl(MPI_Group \fIgroup\fP, int\fI n\fP, int\fI *ranks\fP, |
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| 13 | MPI_Group\fI *newgroup\fP) |
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| 14 | |
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| 15 | .SH Fortran Syntax |
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| 16 | .nf |
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| 17 | INCLUDE 'mpif.h' |
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| 18 | MPI_GROUP_INCL(\fIGROUP, N, RANKS, NEWGROUP, IERROR\fP) |
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| 19 | INTEGER \fIGROUP, N, RANKS(*), NEWGROUP, IERROR\fP |
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| 20 | |
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| 21 | .SH C++ Syntax |
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| 22 | .nf |
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| 23 | #include <mpi.h> |
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| 24 | Group Group::Incl(int \fIn\fP, const int \fIranks\fP[]) const |
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| 25 | |
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| 26 | .SH INPUT PARAMETERS |
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| 27 | .ft R |
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| 28 | .TP 1i |
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| 29 | group |
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| 30 | Group (handle). |
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| 31 | .TP 1i |
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| 32 | n |
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| 33 | Number of elements in array ranks (and size of \fInewgroup\fP)(integer). |
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| 34 | .TP 1i |
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| 35 | ranks |
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| 36 | Ranks of processes in group to appear in newgroup (array of integers). |
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| 37 | |
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| 38 | .SH OUTPUT PARAMETERS |
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| 39 | .ft R |
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| 40 | .TP 1i |
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| 41 | newgroup |
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| 42 | New group derived from above, in the order defined by ranks (handle). |
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| 43 | .ft R |
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| 44 | .TP 1i |
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| 45 | IERROR |
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| 46 | Fortran only: Error status (integer). |
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| 47 | |
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| 48 | .SH DESCRIPTION |
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| 49 | .ft R |
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| 50 | The function MPI_Group_incl creates a group group_out that consists of the n processes in group with ranks rank[0], \&..., rank[n-1]; the process with rank i in group_out is the process with rank ranks[i] in group. Each of the n elements of ranks must be a valid rank in group and all elements must be distinct, or else the program is erroneous. If n = 0, then group_out is MPI_GROUP_EMPTY. This function can, for instance, be used to reorder the elements of a group. |
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| 51 | |
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| 52 | .SH NOTE |
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| 53 | .ft R |
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| 54 | This implementation does not currently check to ensure that there are no |
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| 55 | duplicates in the list of ranks. |
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| 56 | |
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| 57 | .SH ERRORS |
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| 58 | Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ functions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to throw an MPI:Exception object. |
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| 59 | .sp |
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| 60 | Before the error value is returned, the current MPI error handler is |
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| 61 | called. By default, this error handler aborts the MPI job, except for I/O function errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error. |
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| 62 | |
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| 63 | .SH SEE ALSO |
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| 64 | .ft R |
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| 65 | .sp |
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| 66 | MPI_Group_compare |
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| 67 | .br |
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| 68 | MPI_Group_range_incl |
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| 69 | .br |
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| 70 | MPI_Group_free |
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| 71 | |
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