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revision 1.1 by adcroft, Thu Oct 11 02:03:57 2001 UTC revision 1.6 by cnh, Sun Oct 21 20:50:25 2001 UTC
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9    
10  <center>  <center>
 <h1>  
 Downloading Release 1.0-b1 of MITgcmUV with CVS</h1></center>  
   
 <h2>Environment</h2>  
   
 <blockquote>  
 <pre>setenv CVSROOT :pserver:cvsanon@mitgcm.org:/u/u0/gcmpack  
 cvs login ( CVS password: cvsanon )</pre>  
 </blockquote>  
 You only need to do "cvs login" once but the environment should be set  
 in you .cshrc or .tcshrc.  
11  <h2>  <h2>
12  To obtain the release (with CVS information)</h2>  Hardware/software requirements</h2></center>
13    This page summarises computer system requirements for using MITgcm in a
14  <blockquote>  <a href="../online_documents/manual/sarch.html#fig:mitgcm_architecture_goals">range
15  <pre>cvs co -d MITgcm-r1b1 -r release1_beta1 -P MITgcm</pre>  of scenarios</a> that spans simulations on a desktop PC to simulations
16    run on a high-end supercomputer.&nbsp; The side bar on the left contains
17    links to sites from which third party software and hardware, which you
18    may require, can be obtained. The text below and the <a href="../online_documents/index.html" target="mainFrame">online
19    document</a> explain in what situations&nbsp; you will need these items.
20    In many cases the software you need will already be installed on your computer
21    system and you can go straight ahead and <a href="../getting_started/index.html" target="mainFrame">start
22    using</a> the model.
23    <p><b>MITgcm</b>
24    <ul>
25    <li>
26    runs on a wide <a href="../online_documents/manual/targethw.html">range
27    of computer systems.</a></li>
28    
29    <li>
30    includes special software (called <a href="../online_documents/manual/wrapper.html">WRAPPER</a>)
31    to support efficient execution and relatively easy portablity.</li>
32    </ul>
33    <b>Platforms where MITgcm is run regularly include</b>
34    <ul>
35    <li>
36    <a href="sideMenuBarFrame.html#hardware" target="sideMenuBarFrame">Unix
37    PC's</a> ( both Intel and AMD processor based) running Linux.</li>
38    
39    <li>
40    <a href="sideMenuBarFrame.html#hardware" target="sideMenuBarFrame">Unix
41    workstations</a> from Sun, SGI, HP, IBM, Compaq.</li>
42    
43    <li>
44    Unix based PC and workstation <a href="sideMenuBarFrame.html#interconnects" target="sideMenuBarFrame">clusters</a>.</li>
45    
46    <li>
47    high-end <a href="sideMenuBarFrame.html#hardware" target="sideMenuBarFrame">symetric
48    multi-processor systems</a>.</li>
49    </ul>
50    
51    <ul>Under the WRAPPER, code can also run very efficiently on high-end vector
52    processing systems, but we can't afford one.</ul>
53    <b>The minimum you require to run the model is</b>
54    <ul>
55    <li>
56    a computer runing a <a href="sideMenuBarFrame.html#os" target="sideMenuBarFrame">Unix
57    style operating system</a>.</li>
58    
59    <li>
60    a Fortran 77, Fortran 90 or Fortran 95 <a href="sideMenuBarFrame.html#compilers" target="sideMenuBarFrame">compiler</a>.</li>
61    
62    <li>
63    a <a href="sideMenuBarFrame.html#compilers" target="sideMenuBarFrame">C
64    compiler</a>.</li>
65    </ul>
66    <b>To run parallel configurations you need</b>
67    <ul>
68    <li>
69    a multi-process <a href="sideMenuBarFrame.html#hardware" target="sideMenuBarFrame">computer</a></li>
70    
71    <br>and either of
72    <li>
73    a <a href="sideMenuBarFrame.html#compilers" target="sideMenuBarFrame">compiler</a>
74    and that supports multi-threaded programs.</li>
75    
76    <li>
77    a system with an implementation of the <a href="sideMenuBarFrame.html#parallelism" target="sideMenuBarFrame">MPI
78    library installed</a>.</li><br><br>
79    Instructions on running multi-process codes can be found <a href=x>here</a>.
80    Instructions regarding muti-threaded execution can be found <a href=x>here</a>.
81    Specialized communication software, to optimize performance on a specific
82    platform, can also be introduced into the WRAPPER. This process
83    is discussed <a href=x>here</a>. Before running a parallel code we recommend you try one of the
84    <a href=x>basic examples</a></ul>
85    
86    <b>To perform derivative calculations you need</b>
87    <ul>
88    <li>
89    an <a href="sideMenuBarFrame.html#differentiation" target="sideMenuBarFrame">
90    automatic differentiation tool</a>.
91    </li><br>
92    An example experiment illustrating the automatic differentiation
93    process can be found <a href=x>here</a>.
94    </ul>
95    
96    <p><br><b>Once you have your computer set up</b>
97    <blockquote>go <a href="../getting_started/index.html" target=mainFrame>here </a>
98    to find out how to download the model. The full distribution (including
99    examples with input datasets and sample output) is around 50MB. Instructions
100    on estimating the computing resource requirements (CPU time, memory usage
101    and disk space) for a set of numerical experiments can be found here.</blockquote>
102    
103    <p><br><b>Simulation output is usually examined</b>
104    <blockquote>using one of several
105    <a href="sideMenuBarFrame.html#analysis" target="sideMenuBarFrame">standard analysis tools</a>,
106    depending on individual
107    preference and experiemnce.
108  </blockquote>  </blockquote>
 This creates a directory called <i>MITgcm-r10b1</i> in which you'll find  
 the source code.  
 <p>For later on, CVS will allow you to upgrade your copy of the code as  
 patches are released. For more information on how to use CVS try this  
 <a href="../../usingcvstoget.html">starting  
 page</a>.  
 <br>&nbsp;  
109    
110  <p>  <p><br><b>Still confused?</b>
111    <blockquote>send us <a href=mailto:support@mitgcm.org>mail</a>.
112    We like our software to be used and are happy to help out if we can.
113    
114  <hr WIDTH="100%">  <hr WIDTH="100%">
115  <table CELLSPACING=0 CELLPADDING=0 WIDTH="100%" NOSAVE >  <table CELLSPACING=0 CELLPADDING=0 WIDTH="100%" NOSAVE >
116  <tr NOSAVE>  <tr NOSAVE>
117  <td NOSAVE>Last modified on $Date$</td>  <td NOSAVE>Last modified on $Date$</td>
118    
119  <td>  <td>
120  <div align=right>CVS: $Source$Revision: 1.1 $</div>  <div align=right>CVS:  /u/gcmpack/mitgcm.org/sealion/download_software/viaCVS.html,v
121    $Revision$</div>
122  </td>  </td>
123  </tr>  </tr>
124  </table>  </table>
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