70 строки
2.6 KiB
Groff
70 строки
2.6 KiB
Groff
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.\"Copyright 2006, Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.
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.\" Copyright (c) 1996 Thinking Machines Corporation
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.TH MPI_Group_range_excl 3OpenMPI "September 2006" "Open MPI 1.2" " "
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.SH NAME
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\fBMPI_Group_range_excl\fP \- Produces a group by excluding ranges of processes from an existing group.
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.SH SYNTAX
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.ft R
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.SH C Syntax
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.nf
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#include <mpi.h>
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int MPI_Group_range_excl(MPI_Group \fIgroup\fP, int\fI n\fP, int\fI ranges\fP[][3],
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MPI_Group\fI *newgroup\fP)
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.SH Fortran Syntax
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.nf
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INCLUDE 'mpif.h'
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MPI_GROUP_RANGE_EXCL(\fIGROUP, N, RANGES, NEWGROUP, IERROR\fP)
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INTEGER \fIGROUP, N, RANGES(3,*), NEWGROUP, IERROR\fP
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.SH C++ Syntax
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.nf
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#include <mpi.h>
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Group Group::Range_excl(int \fIn\fP, const int \fIranges\fP[][3]) const
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.SH INPUT PARAMETERS
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.ft R
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.TP 1i
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group
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Group (handle).
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.TP 1i
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n
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Number of triplets in array ranges (integer).
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.TP 1i
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ranges
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A one-dimensional array of integer triplets of the form (first rank, last rank, stride), indicating the ranks in group of processes to be excluded from the output group newgroup.
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.SH OUTPUT PARAMETERS
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.ft R
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.TP 1i
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newgroup
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New group derived from above, preserving the order in group (handle).
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.ft R
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.TP 1i
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IERROR
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Fortran only: Error status (integer).
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.SH DESCRIPTION
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.ft R
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Each computed rank must be a valid rank in group and all computed ranks must be distinct, or else the program is erroneous.
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.sp
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The functionality of this routine is specified to be equivalent to
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expanding the array of ranges to an array of the excluded ranks and passing the resulting array of ranks and other arguments to MPI_Group_excl. A call to MPI_Group_excl is equivalent to a call to MPI_Group_range_excl with each rank i in ranks replaced by the triplet (i,i,1) in the argument ranges.
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.SH ERRORS
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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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.sp
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Before the error value is returned, the current MPI error handler is
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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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.SH SEE ALSO
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.ft R
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.sp
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MPI_Group_excl
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.br
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MPI_Group_free
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.br
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' @(#)MPI_Group_range_excl.3 1.20 06/03/09
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