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| author | DongHun Kwak <dh0128.kwak@samsung.com> | 2016-10-06 10:30:07 +0900 |
|---|---|---|
| committer | DongHun Kwak <dh0128.kwak@samsung.com> | 2016-10-06 10:32:57 +0900 |
| commit | 71d216b90256936a9638f325af9bc69d720e75de (patch) | |
| tree | 9c5f682d341c7c88ad0c8e3d4b262e00b6fb691a /doc/html/boost/mpi/reduce.html | |
| parent | 733b5d5ae2c5d625211e2985ac25728ac3f54883 (diff) | |
| download | boost-71d216b90256936a9638f325af9bc69d720e75de.tar.gz boost-71d216b90256936a9638f325af9bc69d720e75de.tar.bz2 boost-71d216b90256936a9638f325af9bc69d720e75de.zip | |
Imported Upstream version 1.59.0
Change-Id: I2dde00f4eca71df3eea9d251dcaecde18a6c90a5
Signed-off-by: DongHun Kwak <dh0128.kwak@samsung.com>
Diffstat (limited to 'doc/html/boost/mpi/reduce.html')
| -rw-r--r-- | doc/html/boost/mpi/reduce.html | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/doc/html/boost/mpi/reduce.html b/doc/html/boost/mpi/reduce.html index 73ef3f9005..b2c628f384 100644 --- a/doc/html/boost/mpi/reduce.html +++ b/doc/html/boost/mpi/reduce.html @@ -1,3 +1,4 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> @@ -6,7 +7,7 @@ <meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> <link rel="up" href="../../mpi/reference.html#header.boost.mpi.collectives_hpp" title="Header <boost/mpi/collectives.hpp>"> -<link rel="prev" href="scatter.html" title="Function scatter"> +<link rel="prev" href="scatterv.html" title="Function scatterv"> <link rel="next" href="scan.html" title="Function scan"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> @@ -20,7 +21,7 @@ </tr></table> <hr> <div class="spirit-nav"> -<a accesskey="p" href="scatter.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../mpi/reference.html#header.boost.mpi.collectives_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="scan.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> +<a accesskey="p" href="scatterv.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../mpi/reference.html#header.boost.mpi.collectives_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="scan.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> </div> <div class="refentry"> <a name="boost.mpi.reduce"></a><div class="titlepage"></div> @@ -44,7 +45,7 @@ <span class="keyword">void</span> <span class="identifier">reduce</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="communicator.html" title="Class communicator">communicator</a> <span class="special">&</span> comm<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">T</span> <span class="special">*</span> in_values<span class="special">,</span> <span class="keyword">int</span> n<span class="special">,</span> <span class="identifier">Op</span> op<span class="special">,</span> <span class="keyword">int</span> root<span class="special">)</span><span class="special">;</span></pre></div> <div class="refsect1"> -<a name="idp331630384"></a><h2>Description</h2> +<a name="idp337901264"></a><h2>Description</h2> <p><code class="computeroutput">reduce</code> is a collective algorithm that combines the values stored by each process into a single value at the <code class="computeroutput">root</code>. The values can be combined arbitrarily, specified via a function object. The type <code class="computeroutput">T</code> of the values may be any type that is serializable or has an associated MPI data type. One can think of this operation as a <code class="computeroutput">gather</code> to the <code class="computeroutput">root</code>, followed by an <code class="computeroutput">std::accumulate()</code> over the gathered values and using the operation <code class="computeroutput">op</code>.</p> <p>When the type <code class="computeroutput">T</code> has an associated MPI data type, this routine invokes <code class="computeroutput">MPI_Reduce</code> to perform the reduction. If possible, built-in MPI operations will be used; otherwise, <code class="computeroutput">reduce()</code> will create a custom MPI_Op for the call to MPI_Reduce.</p> <p> @@ -100,7 +101,7 @@ </tr></table> <hr> <div class="spirit-nav"> -<a accesskey="p" href="scatter.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../mpi/reference.html#header.boost.mpi.collectives_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="scan.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> +<a accesskey="p" href="scatterv.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../mpi/reference.html#header.boost.mpi.collectives_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="scan.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> </div> </body> </html> |