Changes between Version 15 and Version 16 of GENIEducation/SampleAssignments/UnderstandAMAPI/Procedure/Execute


Ignore:
Timestamp:
02/13/14 17:48:33 (10 years ago)
Author:
sedwards@bbn.com
Comment:

--

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  • GENIEducation/SampleAssignments/UnderstandAMAPI/Procedure/Execute

    v15 v16  
    4444</pre>
    4545
    46 <table border="0" cellpadding="0" cellspacing="0"><tr><td><img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/warning-icon-hi.png?format=raw" /></td><td>If you didn't previously complete the Flack tutorial (or are not running an <tt>ssh</tt> agent), then your <tt>ssh</tt> client might
     46<table border="0" cellpadding="0" cellspacing="0"><tr><td><img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/warning-icon-hi.png?format=raw" width='50' height='50' /></td><td>If you didn't previously complete the Flack tutorial (or are not running an <tt>ssh</tt> agent), then your <tt>ssh</tt> client might
    4747not be set up to log in with above commands.  Try re-running <tt>readyToLogin</tt> without the <tt>--no-keys</tt> option, and it will give you one or
    4848more <tt>ssh</tt> commands to choose from (which should work, although might require the key passphrase).</td></tr></table>
    … …  
    5454== 5 Browse server webpage and log in to client node ==
    5555
     56The `install` and `execute` services requested in our RSpec have
     57already started, and the apache webserver has started on the server and measurements are now being collected.
     58
    5659{{{
    5760#!html
    … …  
    6265Enter the hostname of the server node in your browser.  It should bring up a webpage of statistics from your experiment similar to that shown in the figure.
    6366</li>
    64   <li>Copy and paste the <tt>ssh</tt> command lines directly into your terminal
    65 to log in to either of your hosts.  While you're welcome to inspect either
    66 one, for the purpose of this experiment, the <tt>client</tt> host is the one
    67 running the <tt>iperf</tt> tests and collecting all the logs, so please use
    68 the <i>client</i> <tt>ssh</tt> command now.
    69 <br/>
    70 <br/>
    71 You may get a warning from <tt>ssh</tt> complaining that the authenticity of the
    72 host cannot be established.  This is just because your <tt>ssh</tt> client has
    73 never accessed this VM before, and so does not yet recognize its key.  Say
    74 "yes", you do want to continue connecting, and you should see a shell prompt
     67  <li>Copy and paste the <tt>ssh</tt> command lines for your client directly into your terminal
     68to log in.  You should see a shell prompt
    7569from the remote end:
    7670<pre>
    … …  
    7872</pre>
    7973
    80 The <tt>install</tt> and <tt>execute</tt> services requested in our RSpec have
    81 already started, and measurements are now being collected. 
    82 <br/>
    83 <br/>
     74<table id="Table_01" border="0" cellpadding="5" cellspacing="0">
     75        <tr>
     76                <td>
     77                        <img src="http://trac.gpolab.bbn.com/gcf/raw-attachment/wiki/Graphics/4NotesIcon_512x512.png" width="50" height="50" alt="Note">
     78               </td>
     79<td>
     80While you're welcome to inspect either
     81the client or server, but for the purpose of this experiment, the <tt>client</tt> host is the one
     82running the <tt>iperf</tt> tests and collecting all the logs.
     83</td>
     84        </tr>
     85</table>
     86</li>
     87<li>
    8488
    85 (In addition, you can inspect the <code>/local</code> directory
    86 on each host, and look for the appropriate processes with a command like
    87 <code>ps ax</code>.  If you do not see the proper files and processes, please
    88 double-check the <code>rspec</code> you used in the previous step.)
     89Inspect the <code>/local</code> directory:
     90<pre>
     91cd /local
     92ls
     93</pre>
     94
     95Look for the <code>iperf</code> and <code>wget</code> processes:
     96<pre>
     97ps ax
     98</pre>
     99
     100<table id="Table_03" border="0" cellpadding="5" cellspacing="0">
     101        <tr>
     102                <td>
     103                        <img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/Symbols-Tips-icon.png?format=raw" width="50" height="50" alt="Tip">
     104               </td>
     105               <td>
     106If you do not see the proper files and processes, please double-check the <code>RSpec</code> you used in the previous step.
     107        </tr>
     108</table>
     109
    89110</li>
    90111</ol>
    … …  
    100121      </tr>
    101122<tr><td>
    102 <ol type='a' start='2'><li>
    103 The client machine is saving all the test results in the <tt>/tmp/iperf-logs</tt>
     123</td></tr>
     124</table>
     125}}}
     126
     127
     128
     129The client machine is saving all the test results in the `/tmp/iperf-logs`
    104130directory.  Files with timestamps in the names will gradually appear
    105131there (there are 100 tests overall, and it may take 20 minutes for all
    … …  
    110136Later tests gradually include more concurrent connections, so the
    111137throughput of each individual connection will decrease, but the
    112 aggregate throughput (the <tt>[SUM]</tt> line at the end of each file)
     138aggregate throughput (the `[SUM]` line at the end of each file)
    113139should remain approximately consistent.
    114 </li>
    115140
    116 </ol>
    117 </td></tr>
    118 </table>
    119 }}}
     141
    120142
    121143== 6.  Analyze Experiment ==