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128 lines
4.3 KiB
128 lines
4.3 KiB
2 years ago
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<!-------- @HEADER
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!
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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!
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! Zoltan Toolkit for Load-balancing, Partitioning, Ordering and Coloring
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! Copyright 2012 Sandia Corporation
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!
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! Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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! the U.S. Government retains certain rights in this software.
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions are
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! met:
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!
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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!
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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!
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! 3. Neither the name of the Corporation nor the names of the
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! contributors may be used to endorse or promote products derived from
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! this software without specific prior written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
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! EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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! IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
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! CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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! EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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! PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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! LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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! NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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! SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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!
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! Questions? Contact Karen Devine kddevin@sandia.gov
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! Erik Boman egboman@sandia.gov
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!
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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!
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! @HEADER
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------->
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<!DOCTYPE html PUBLIC "-//w3c//dtd html 4.0 transitional//en">
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<html>
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<head>
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<meta http-equiv="Content-Type"
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content="text/html; charset=iso-8859-1">
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<meta name="GENERATOR"
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content="Mozilla/4.7 [en] (X11; U; SunOS 5.7 sun4u) [Netscape]">
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<meta name="sandia.approval_type" content="formal">
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<meta name="sandia.approved" content="SAND2007-4748W">
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<meta name="author" content="Zoltan PI">
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<title>Zoltan User's Guide: RANDOM</title>
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</head>
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<body bgcolor="#ffffff">
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<div align="right"><b><i><a href="ug.html">User's Guide</a>
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| <a href="ug_alg_geom.html">Next</a> | <a
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href="ug_alg_cyclic.html">Previous</a></i></b></div>
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<h2>
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<a name="RANDOM"></a>Random</h2>
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Random is not really a load-balancing algorithm,
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and should be used only for testing!
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It takes each object and randomly assigns it to a new part.
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Via a parameter, one can alternatively choose to randomly perturb
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only a fraction of the objects. The random method does not use weights
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and does not attempt to achieve load balance.
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<br>
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<table width="100%" nosave="">
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<tbody>
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<tr>
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<td valign="top"><b>Method String:</b></td>
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<td><b>Random</b></td>
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</tr>
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<tr>
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<td><b>Parameters:</b></td>
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<td><br>
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</td>
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</tr>
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<tr>
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<td valign="top"> <i>RANDOM_MOVE_FRACTION</i></td>
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<td>The fraction of objects to randomly move.<br>
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1.0 = move all; 0.0 = move nothing</td>
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</tr>
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<tr>
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<td VALIGN=TOP><b>Default:</b></td>
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<td></td>
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</tr>
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<tr>
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<td></td>
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<td><i>RANDOM_MOVE_FRACTION</i> = 1.0</td>
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</tr>
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<tr>
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<td valign="top"><b>Required Query Functions:</b></td>
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<td><br>
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</td>
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</tr>
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<tr>
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<td><br>
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</td>
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<td><b><a href="ug_query_lb.html#ZOLTAN_NUM_OBJ_FN">ZOLTAN_NUM_OBJ_FN</a></b></td>
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</tr>
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<tr>
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<td><br>
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</td>
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<td><b><a href="ug_query_lb.html#ZOLTAN_OBJ_LIST_FN">ZOLTAN_OBJ_LIST_FN</a></b>
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</td>
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</tr>
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</tbody>
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</table>
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<p>
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<HR WIDTH="100%">[<a href="ug.html">Table of Contents</a> |
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<a href="ug_alg_geom.html">Next: Geometric (Coordinate-Based) Partitioners</a>
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| <a href="ug_alg_cyclic.html">Previous: Cyclic</a> | <a href="https://www.sandia.gov/general/privacy-security/index.html">Privacy and Security</a>]
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|
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</body>
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</html>
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