From 5a3b8b34cd75dcd4bbe85e0ffdf1806e1e533fc6 Mon Sep 17 00:00:00 2001 From: KAWASHIMA Takahiro Date: Thu, 15 Oct 2015 17:51:02 +0900 Subject: [PATCH] man: Remove outdated description. MPI-2.2 is ratified. --- ompi/mpi/man/man3/MPI_Reduce_local.3in | 2 -- 1 file changed, 2 deletions(-) diff --git a/ompi/mpi/man/man3/MPI_Reduce_local.3in b/ompi/mpi/man/man3/MPI_Reduce_local.3in index 6bca5d1c20..bc944137d0 100644 --- a/ompi/mpi/man/man3/MPI_Reduce_local.3in +++ b/ompi/mpi/man/man3/MPI_Reduce_local.3in @@ -72,8 +72,6 @@ Fortran only: Error status (integer). .SH DESCRIPTION .ft R -.I The MPI_Reduce_local function is proposed for MPI-2.2 and (as of 10 Jan 2009) has not yet been ratified. Use at your own risk. See https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/24. -.sp The global reduce functions (MPI_Reduce_local, MPI_Op_create, MPI_Op_free, MPI_Allreduce, MPI_Reduce_local_scatter, MPI_Scan) perform a global reduce operation (such as sum, max, logical AND, etc.) across all the members of a group. The reduction operation can be either one of a predefined list of operations, or a user-defined operation. The global reduction functions come in several flavors: a reduce that returns the result of the reduction at one node, an all-reduce that returns this result at all nodes, and a scan (parallel prefix) operation. In addition, a reduce-scatter operation combines the functionality of a reduce and a scatter operation. .sp MPI_Reduce_local combines the elements provided in the input and input/output buffers of the local process, using the operation op, and returns the combined value in the inout/output buffer. The input buffer is defined by the arguments inbuf, count, and datatype; the output buffer is defined by the arguments inoutbuf, count, and datatype; both have the same number of elements, with the same type. The routine is a local call. The process can provide one element, or a sequence of elements, in which case the combine operation is executed element-wise on each entry of the sequence. For example, if the operation is MPI_MAX and the input buffer contains two elements that are floating-point numbers (count = 2 and datatype = MPI_FLOAT), then inoutbuf(1) = global max (inbuf(1)) and inoutbuf(2) = global max(inbuf(2)).