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108 lines
4.2 KiB
108 lines
4.2 KiB
<!-------- @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: BLOCK</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">Zoltan User's Guide</a>
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| <a href="ug_alg_cyclic.html">Next</a> | <a
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href="ug_alg_simple.html">Previous</a></i></b></div>
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<h2>
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<a name="BLOCK"></a>Block</h2>
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A simple partitioner based on block partitioning of the objects.
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It is mainly intended for testing. It uses neither geometry
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nor connectivity (graph/hypergraph), so it requires very few query
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functions.
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The block strategy is as follows: Consider all objects (on all processors) as a linear sequence. Assign the first block of n/num_parts objects to the first part, the next block to the second, and so on. Block is smart enough to generalize this method to handle vertex weights and target part sizes. Only a single weight per object (Obj_Weight_Dim=1) is currently supported.
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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>Block</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"><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_cyclic.html">Next: Cyclic</a>
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| <a href="ug_alg_simple.html">Previous: Simple Partitioners for Testing</a> | <a href="https://www.sandia.gov/general/privacy-security/index.html">Privacy and Security</a>]
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</body>
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</html>
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