source: html/trunk/Clp/faq.html @ 945

Last change on this file since 945 was 945, checked in by ddelanu, 17 years ago

Added new banner and copied FAQ from main page (<-- to be edited later)

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 4.2 KB
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1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
2<html>
3<head>
4    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
5    <title>Clp Homepage</title>
6    <link rel="stylesheet" href="../coin.css" type="text/css">
7</head>
8
9<!-- <div align="center"><h3>Clp Homepage</h3></div> -->
10
11<body>
12
13<table>
14  <tbody>
15    <tr>
16      <td>
17        &nbsp;
18      </td>
19      <td>
20        <div align="center">
21          <img id="ClpBanner"
22            height="60" width="600"
23            border="0"
24            src="images/ClpBanner.gif"
25            alt="Clp">
26        </div>
27      </td>
28    </tr>
29    <tr>
30      <td valign="top" width="120">
31        <a href="index.html">
32          <img id="ClpNavHome"
33            height="25" width="120"
34            border="0"
35            src="images/ClpNav-Home.gif"
36            alt="Home">
37        </a>
38        <a href="faq.html">
39          <img id="ClpNavFAQ"
40            height="25" width="120"
41            border="0"
42            src="images/ClpNav-FAQ-Hi.gif"
43            alt="Home">
44        </a>
45        <a href="documentation.html">
46          <img id="ClpNavDoc"
47            height="25" width="120"
48            border="0"
49            src="images/ClpNav-Doc.gif"
50            alt="Home">
51        </a>
52      </td>
53      <!--              -->
54      <!-- MAIN CONTENT -->
55      <!--              -->
56      <td>
57        <div class="main-content">
58        <p>
59          <!-- <marquee>&quot;Coming Soon&quot;</marquee> -->
60        </p>
61
62              <p ALIGN=LEFT><b>Q: What is the COIN LP code?</b><br>
63                A: The <a href="index.html">COIN LP</a> code is designed
64                to be a high quality Simplex code
65                which can be used in any situation where one would
66                use the Simplex algorithms of Cplex, Xpress or OSL.
67                The first release was 0.90 and we are now up to 0.93.</p>
68
69             
70              <p><b>Q: Is it reliable?</b><br>
71                A: It has been tested on many problems of up to
72                1.5 million constraints and has shown itself as
73                reliable as OSL.  It is also being tested in the
74                context of SBB, but more testing is needed before
75                it can get to version 1.0.</p>
76
77
78              <p><b>Q: Is it as fast as OSL?</b><br>
79                A: It uses sparse techniques designed for very
80                large problems.  The design criteria where for it
81                not to be too slow.  Some speed has been
82                sacrificed to make the code less opaque than
83                OSL (not difficult:-)).</p>
84
85
86              <p><b>Q: When will version 1.0 be available?</b><br>
87                A: It depends on the interest of the COIN audience and
88                on the workload of John Forrest.  It was meant to be
89                a community effort, but rather more was done before
90                the prototype was released than had been intended.
91                It now has a presolve, but it still needs more
92                done to it.</p>
93
94
95              <p><b>Q: What are a few of its features?</b><br>
96                A: Both dual and primal algorithms can use matrix
97                storage methods provided by user e.g. all 1.0.  At
98                present just OsiPackedMatrix is supported.  The Dual
99                algorithm has Dantzig and Steepest edge row pivot choices
100                and new ones may be provided by user.  Similarly for
101                the column pivot choice in Primal.  Primal also
102                uses a non linear cost.  This should work for
103                piecewise linear convex functions and I will try
104                to get it to work for non-convex functions.</p>
105
106
107              <p><b>Q: What can the community do to help?</b><br>
108                A: Lots.</p>
109              <ul>
110                <li>Comment on the design.  I have not invested
111                so much time that it will hurt too much to totally
112                redesign it.</li>
113                <li>Break the code - even better - mend the code.  </li>
114                <li>Add national language support in your own favo(u)rite language.</li>
115                <li>Improve the driver in Clp to give more help etc</li>
116              </ul>
117
118
119              <p><b>Q: Is there any documentation for CLP?</b><br>
120                A: Not much yet. For the user, there are very few
121                knobs to twiddle anyway.  Just execute clp
122                in the Clp directory and follow instructions.</p>
123
124
125              <p><b>Q: What platforms does CLP run on?</b><br>
126                A: CLP has been tested on:</p>
127              <ul>
128                <li>Linux using g++ V3.1.1.</li>
129                <li>Windows using Microsoft Visual C++ V6</li>
130                <li>AIX using xlC (not supported by current Makefile).</li>
131              </ul>
132
133
134
135        <p>
136          <!-- <a href="../faqs.html#CLP">General CLP FAQ</a> -->
137        </p>
138        </div>
139        <!--        -->
140        <!-- FOOTER -->
141        <!--        -->
142        <div class="footer">
143          <p>
144            This page last modified <!--#echo var="LAST_MODIFIED"-->
145          </p>
146        </div>
147      </td>
148    </tr>
149  </tbody>
150</table>
151
152</body>
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