You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
128 lines
5.6 KiB
128 lines
5.6 KiB
2 years ago
|
<!-------- @HEADER
|
||
|
|
!
|
||
|
|
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||
|
|
!
|
||
|
|
! Zoltan Toolkit for Load-balancing, Partitioning, Ordering and Coloring
|
||
|
|
! Copyright 2012 Sandia Corporation
|
||
|
|
!
|
||
|
|
! Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
|
||
|
|
! the U.S. Government retains certain rights in this software.
|
||
|
|
!
|
||
|
|
! Redistribution and use in source and binary forms, with or without
|
||
|
|
! modification, are permitted provided that the following conditions are
|
||
|
|
! met:
|
||
|
|
!
|
||
|
|
! 1. Redistributions of source code must retain the above copyright
|
||
|
|
! notice, this list of conditions and the following disclaimer.
|
||
|
|
!
|
||
|
|
! 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
! notice, this list of conditions and the following disclaimer in the
|
||
|
|
! documentation and/or other materials provided with the distribution.
|
||
|
|
!
|
||
|
|
! 3. Neither the name of the Corporation nor the names of the
|
||
|
|
! contributors may be used to endorse or promote products derived from
|
||
|
|
! this software without specific prior written permission.
|
||
|
|
!
|
||
|
|
! THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
|
||
|
|
! EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
! IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||
|
|
! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
|
||
|
|
! CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||
|
|
! EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||
|
|
! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
||
|
|
! PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
||
|
|
! LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||
|
|
! NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||
|
|
! SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
!
|
||
|
|
! Questions? Contact Karen Devine kddevin@sandia.gov
|
||
|
|
! Erik Boman egboman@sandia.gov
|
||
|
|
!
|
||
|
|
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||
|
|
!
|
||
|
|
! @HEADER
|
||
|
|
------->
|
||
|
|
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
|
||
|
|
<html>
|
||
|
|
<head>
|
||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
|
||
|
|
<meta name="GENERATOR" content="Mozilla/4.7 [en] (X11; U; SunOS 5.6 sun4m) [Netscape]">
|
||
|
|
<meta name="sandia.approved" content="SAND99-1376">
|
||
|
|
<meta name="author" content="karen devine, kddevin@sandia.gov">
|
||
|
|
<title> Zoltan Developer's Guide: Adding Algorithms</title>
|
||
|
|
|
||
|
|
</head>
|
||
|
|
<body bgcolor="#FFFFFF">
|
||
|
|
|
||
|
|
<div align=right><b><i><a href="dev.html">Zoltan Developer's Guide</a>
|
||
|
|
| <a href="dev_add_interface.html">Next</a> | <a href="dev_services_debug.html">Previous</a></i></b></div>
|
||
|
|
|
||
|
|
<h2>
|
||
|
|
<a NAME="new_methods"></a>Adding New Load-Balancing Algorithms to Zoltan</h2>
|
||
|
|
The Zoltan library is designed so that adding new load-balancing algorithms
|
||
|
|
to the library is simple. In many cases, existing code can be easily modified
|
||
|
|
to use the interface query functions to build the data structures needed
|
||
|
|
for the algorithm. The process for adding new algorithms to the library
|
||
|
|
is described below; more detail is provided at each link.
|
||
|
|
<ol>
|
||
|
|
<li>
|
||
|
|
Make sure you follow the <a href="dev_intro_philosophy.html">Philosophy
|
||
|
|
of Zoltan</a> and the <a href="dev_intro_coding.html">Coding Principles
|
||
|
|
in Zoltan</a>.</li>
|
||
|
|
|
||
|
|
<li>
|
||
|
|
Use the <a href="dev_add_struct.html">Data Structures</a>
|
||
|
|
provided by Zoltan.</li>
|
||
|
|
|
||
|
|
<li>
|
||
|
|
Implement a <a href="dev_add_lb.html">Load-Balancing Function</a> front-end
|
||
|
|
to the algorithm. Note that Zoltan load-balance methods should assign objects both to processors and parts, which may be different. The recommended strategy is to assign objects to parts first, then use Zoltan_LB_Part_To_Proc to generate the corresponding processors.</li>
|
||
|
|
|
||
|
|
<li>
|
||
|
|
Add the algorithm to the <a href="dev_add_interface.html">Load-Balancing
|
||
|
|
Interface Routines</a>.</li>
|
||
|
|
|
||
|
|
<li>
|
||
|
|
Add the <a href="dev_add_params.html">Parameters</a> needed by the algorithm.
|
||
|
|
Also make sure that the algorithm uses the <a href="../ug_html/ug_param.html#General_Parameters">General Parameters</a> in Zoltan properly, in particular
|
||
|
|
<a href="../ug_html/ug_alg.html#LB Parameters"><b>Imbalance_Tol</b></a> and
|
||
|
|
<a href="../ug_html/ug_param.html#Debug Levels in Zoltan"><b>Debug_Level.</b></a></li>
|
||
|
|
|
||
|
|
<li>
|
||
|
|
If necessary, write a routine to free your dynamically allocated data structures.
|
||
|
|
See tips on <a href="dev_add_memory.html">memory management</a></li>
|
||
|
|
in Zoltan.</a></li>
|
||
|
|
|
||
|
|
<li>
|
||
|
|
If your algorithm uses persistent data structures,
|
||
|
|
like the RCB tree with <a href="../ug_html/ug_alg_rcb.html">KEEP_CUTS</a>,
|
||
|
|
write a routine to copy your load balancing
|
||
|
|
<a href="dev_add_struct.html#Copy">data structure</a>. </li>
|
||
|
|
|
||
|
|
<li>
|
||
|
|
We recommend you add part remapping to your algorithm using
|
||
|
|
<a href="dev_add_.html"><b>Zoltan_LB_Remap</b></a>.</li>
|
||
|
|
|
||
|
|
<li>
|
||
|
|
Update the <a href="dev_fortran.html#fortran dev add">Fortran</a>
|
||
|
|
and <a href="dev_cpp.html">C++</a> interfaces, if necessary.</li>
|
||
|
|
|
||
|
|
<li>
|
||
|
|
Document your new method. The documentation should be written in a format
|
||
|
|
that can easily be converted into HTML and PDF. Consider adding a
|
||
|
|
simple application to the <I>examples</I> directory demonstrating the
|
||
|
|
use of your method.</li>
|
||
|
|
|
||
|
|
<li>
|
||
|
|
Please contact the Zoltan team if you would like your method to be distributed
|
||
|
|
with future versions of Zoltan.</li>
|
||
|
|
|
||
|
|
</ol>
|
||
|
|
|
||
|
|
<hr WIDTH="100%">
|
||
|
|
<br>[<a href="dev.html">Table of Contents</a> | <a href="dev_add_interface.html">Next:
|
||
|
|
Load-Balancing Interface Routines</a> | <a href="dev_services_debug.html">Previous:
|
||
|
|
Debugging Services</a> | <a href="https://www.sandia.gov/general/privacy-security/index.html">Privacy and Security</a>]
|
||
|
|
</body>
|
||
|
|
</html>
|