Zoltan is added as thirdParty package

2025-07-18 03:17:04 +00:00 · 2025-05-15 21:58:43 +03:30
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+<!-------- @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 5.7 sun4u) [Netscape]">
+   <meta name="sandia.approved" content="SAND99-1376">
+   <meta name="author" content="karen devine, kddevin@sandia.gov">
+   <title> Zoltan Developer's Guide:  Adding Algorithms: How to handle memory</title>
+
+</head>
+<body bgcolor="#FFFFFF">
+
+<div align=right><b><i><a href="dev.html">Zoltan Developer's Guide</a>&nbsp;
+|&nbsp; <a href="dev_add_params.html">Next</a>&nbsp; |&nbsp; <a href="dev_add_struct.html">Previous</a></i></b></div>
+<!------------------------------------------------------------------------->
+
+
+<h2>
+Memory Management in Zoltan Algorithms</h2>
+Zoltan uses a <a href="../ug_html/ug_util_mem.html">memory management
+package</a> to simplify debugging of memory problems. 
+It is strongly recommended that algorithm
+developers use the routines in this package, such as 
+<a href="../ug_html/ug_util_mem.html#Zoltan_Malloc"><b>ZOLTAN_MALLOC</b> </a>,
+<a href="../ug_html/ug_util_mem.html#Zoltan_Calloc"><b>ZOLTAN_CALLOC</b> </a> and 
+<b><a href="../ug_html/ug_util_mem.html#Zoltan_Free">ZOLTAN_FREE</a></b>, instead
+of the standard C routines for most memory management.
+<p>
+Macros that simplify the <a href="dev_lb_types.html#ID alloc">allocation of global and local identifiers (IDs)</a>
+are defined in <i>zz/zz_id_const.h</i>.  These macros are described in the 
+<a href="dev_lb_types.html">ID Data Types</a> section.  The macros include
+error checking for the allocations and, thus, their use is highly recommended.
+
+<p>When a dynamic structure needs to be returned to the application,
+special memory allocation routines are needed.&nbsp; For example, the import
+and export lists of data to migrate are returned to an application from
+<b><a href="../ug_html/ug_interface_lb.html#Zoltan_LB_Partition">Zoltan_LB_Partition</a></b>
+and 
+<b><a href="../ug_html/ug_interface_mig.html#Zoltan_Invert_Lists">Zoltan_Invert_Lists</a></b>.
+There are two special routines for managing memory for such situations,
+called <b><a href="#Zoltan_Special_Malloc">Zoltan_Special_Malloc</a></b> and <b><a href="#Zoltan_Special_Free">Zoltan_Special_Free</a></b>.
+Algorithms must use these functions to maintain compatibility with both
+C and Fortran90 applications; these special routines manage memory in a
+way that is compatible with both languages.
+<p>Some load-balancing algorithms may contain persistent data structures,
+that is, data structures that are preserved between calls to the load-balancing
+routine. The <a href="dev_lb_structs.html"><b>Zoltan_Struct</b></a> structure contains a field 
+<a href="dev_add_struct.html"><i>LB.Data_Structure</i></a>
+for this purpose, allowing multiple Zoltan structures to preserve
+their own decomposition data. The developer should write a function that
+frees this data structure.&nbsp; Use <b>Zoltan_RCB_Free_Structure </b>as an
+example.
+<p>
+
+<!------------------------------------------------------------------------->
+<hr>
+<a NAME="Zoltan_Special_Malloc"></a>
+<hr>
+int <b>Zoltan_Special_Malloc</b>(struct
+<b><a href="dev_lb_structs.html#Zoltan_Struct">Zoltan_Struct</a></b>
+*<i>zz</i>, void **<i>array</i>, int <i>size</i>, <b>ZOLTAN_SPECIAL_MALLOC_TYPE</b><i>type</i>);&nbsp;
+<hr>
+<p>The <b>Zoltan_Special_Malloc</b> routine allocates memory to be returned to the application by Zoltan (e.g., the result arrays
+of 
+<b><a href="../ug_html/ug_interface_lb.html#Zoltan_LB_Partition">Zoltan_LB_Partition</a></b>
+and 
+<b><a href="../ug_html/ug_interface_mig.html#Zoltan_Invert_Lists">Zoltan_Invert_Lists</a></b>).
+Returned memory must be allocated by <b>Zoltan_Special_Malloc</b> to insure it is allocated
+by the same language as the application. Memory allocated by <b>Zoltan_Special_Malloc</b>
+must be deallocated by <b><a href="#Zoltan_Special_Free">Zoltan_Special_Free</a></b>.
+<br>&nbsp;
+<table WIDTH="100%" >
+<tr VALIGN=TOP>
+<td VALIGN=TOP WIDTH="20%"><b>Arguments:</b></td>
+
+<td WIDTH="80%"></td>
+</tr>
+
+<tr>
+<td VALIGN=TOP><i>&nbsp;&nbsp;&nbsp; zz</i></td>
+
+<td>The Zoltan structure currently in use.</td>
+</tr>
+
+<tr>
+<td VALIGN=TOP><i>&nbsp;&nbsp;&nbsp; array</i></td>
+
+<td>
+Upon return, a pointer to the allocated space.
+Usually of type int** or <b><a href="dev_lb_types.html">ZOLTAN_ID_PTR</a></b>*.
+</td>
+</tr>
+
+<tr>
+<td VALIGN=TOP><i>&nbsp;&nbsp;&nbsp; size</i></td>
+
+<td>The number of elements (not bytes) to be allocated.</td>
+</tr>
+
+<tr>
+<td VALIGN=TOP>&nbsp;&nbsp;&nbsp; <i>type</i></td>
+
+<td>The type of array to allocate. Must be one of <b>ZOLTAN_SPECIAL_MALLOC_INT</b>,
+<b>ZOLTAN_SPECIAL_MALLOC_GID</b>
+or <b>ZOLTAN_SPECIAL_MALLOC_LID</b> for processor numbers, <a href="dev_lb_types.html">global IDs</a> and <a href="dev_lb_types.html">local IDs</a>, respectively.
+</td>
+</tr>
+
+<tr>
+<td><b>Returned Value:</b></td>
+
+<td></td>
+</tr>
+
+<tr>
+<td VALIGN=TOP>&nbsp;&nbsp; int</td>
+
+<td>1 if the allocation succeeded; 0 if it failed.</td>
+</tr>
+
+<tr>
+<td VALIGN=TOP><b>Example:</b></td>
+
+<td></td>
+</tr>
+
+<tr>
+<td VALIGN=TOP></td>
+
+<td>
+<tt>
+ierr = <b>Zoltan_Special_Malloc</b>(<i>zz</i>, (void **)<i>import_gid</i>,
+<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <i>num_import</i>,
+<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>ZOLTAN_SPECIAL_MALLOC_GID</b>);
+</tt>
+</td>
+</tr>
+
+<tr>
+<td VALIGN=TOP></td>
+
+<td>Allocates an array with <i>num_import</i> <a href="dev_lb_types.html">global IDs</a>
+and returns a pointer to the allocated space in <i>import_gid</i>.
+</td>
+</tr>
+</table>
+
+<p>
+
+<!------------------------------------------------------------------------->
+<hr>
+<a NAME="Zoltan_Special_Free"></a>
+<hr>
+int <b>Zoltan_Special_Free</b>(struct <b><a href="dev_lb_structs.html#Zoltan_Struct">Zoltan_Struct</a></b>
+*<i>zz</i>, void **<i>array</i>,<b> ZOLTAN_SPECIAL_MALLOC_TYPE</b> <i>type</i>);&nbsp;
+<hr>
+<p><b>Zoltan_Special_Free</b> frees memory allocated by <b><a href="#Zoltan_Special_Malloc">Zoltan_Special_Malloc</a></b>.
+The array pointer is set to NULL upon return.
+<br>&nbsp;
+<table WIDTH="100%" >
+<tr VALIGN=TOP>
+<td VALIGN=TOP WIDTH="20%"><b>Arguments:</b></td>
+
+<td WIDTH="80%"></td>
+</tr>
+
+<tr>
+<td VALIGN=TOP><i>&nbsp;&nbsp;&nbsp; zz</i></td>
+
+<td>The Zoltan structure currently in use.</td>
+</tr>
+
+<tr>
+<td VALIGN=TOP><i>&nbsp;&nbsp;&nbsp; array</i></td>
+
+<td>The array to be freed. Upon return, the pointer is set to NULL.</td>
+</tr>
+
+<tr>
+<td VALIGN=TOP>&nbsp;&nbsp;&nbsp; <i>type</i></td>
+
+<td>The type of the array. Must be one of <b>ZOLTAN_SPECIAL_MALLOC_INT</b>,
+<b>ZOLTAN_SPECIAL_MALLOC_GID</b>
+or <b>ZOLTAN_SPECIAL_MALLOC_LID</b> for processor numbers, <a href="dev_lb_types.html">global IDs</a> and <a href="dev_lb_types.html">local IDs</a>, respectively.</td>
+</tr>
+
+<tr>
+<td><b>Returned Value:</b></td>
+
+<td></td>
+</tr>
+
+<tr>
+<td VALIGN=TOP>&nbsp;&nbsp; int</td>
+
+<td>1 if the deallocation succeeded; 0 if it failed.</td>
+</tr>
+
+<tr>
+<td VALIGN=TOP><b>Example:</b></td>
+
+<td></td>
+</tr>
+
+<tr>
+<td VALIGN=TOP></td>
+
+<td>
+<tt>
+ierr = <b>Zoltan_Special_Free</b>(<i>zz</i>, (void **)<i>import_gid</i>,
+<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>ZOLTAN_SPECIAL_MALLOC_GID</b>);
+</tt>
+</td>
+</tr>
+
+<tr>
+<td VALIGN=TOP></td>
+
+<td>Frees the <b><a href="dev_lb_types.html">global IDs</a></b>
+array <i>import_gid</i> and sets it to NULL.</td>
+</tr>
+</table>
+
+<br>&nbsp;
+<p>
+<!------------------------------------------------------------------------->
+<hr WIDTH="100%">
+<br>[<a href="dev.html">Table of Contents</a>&nbsp; |&nbsp; <a href="dev_add_params.html">Next:&nbsp;
+Parameters</a>&nbsp; |&nbsp; <a href="dev_add_struct.html">Previous:&nbsp;
+Data Structures</a>&nbsp; |&nbsp; <a href="https://www.sandia.gov/general/privacy-security/index.html">Privacy and Security</a>]
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