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<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>13. Nulgrind: the minimal Valgrind tool</title> <link rel="stylesheet" href="vg_basic.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.69.1"> <link rel="start" href="index.html" title="Valgrind Documentation"> <link rel="up" href="manual.html" title="Valgrind User Manual"> <link rel="prev" href="lk-manual.html" title="12. Lackey: an example tool"> <link rel="next" href="FAQ.html" title="Valgrind FAQ"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <div><table class="nav" width="100%" cellspacing="3" cellpadding="3" border="0" summary="Navigation header"><tr> <td width="22px" align="center" valign="middle"><a accesskey="p" href="lk-manual.html"><img src="images/prev.png" width="18" height="21" border="0" alt="Prev"></a></td> <td width="25px" align="center" valign="middle"><a accesskey="u" href="manual.html"><img src="images/up.png" width="21" height="18" border="0" alt="Up"></a></td> <td width="31px" align="center" valign="middle"><a accesskey="h" href="index.html"><img src="images/home.png" width="27" height="20" border="0" alt="Up"></a></td> <th align="center" valign="middle">Valgrind User Manual</th> <td width="22px" align="center" valign="middle"><a accesskey="n" href="FAQ.html"><img src="images/next.png" width="18" height="21" border="0" alt="Next"></a></td> </tr></table></div> <div class="chapter" lang="en"> <div class="titlepage"><div><div><h2 class="title"> <a name="nl-manual"></a>13. Nulgrind: the minimal Valgrind tool</h2></div></div></div> <div class="toc"> <p><b>Table of Contents</b></p> <dl><dt><span class="sect1"><a href="nl-manual.html#ms-manual.overview">13.1. Overview</a></span></dt></dl> </div> <p>To use this tool, you must specify <code class="option">--tool=none</code> on the Valgrind command line.</p> <div class="sect1" lang="en"> <div class="titlepage"><div><div><h2 class="title" style="clear: both"> <a name="ms-manual.overview"></a>13.1. Overview</h2></div></div></div> <p>Nulgrind is the simplest possible Valgrind tool. It performs no instrumentation or analysis of a program, just runs it normally. It is mainly of use for Valgrind's developers for debugging and regression testing.</p> <p>Nonetheless you can run programs with Nulgrind. They will run roughly 5 times more slowly than normal, for no useful effect. Note that you need to use the option <code class="option">--tool=none</code> to run Nulgrind (ie. not <code class="option">--tool=nulgrind</code>).</p> </div> </div> <div> <br><table class="nav" width="100%" cellspacing="3" cellpadding="2" border="0" summary="Navigation footer"> <tr> <td rowspan="2" width="40%" align="left"> <a accesskey="p" href="lk-manual.html"><< 12. Lackey: an example tool</a> </td> <td width="20%" align="center"><a accesskey="u" href="manual.html">Up</a></td> <td rowspan="2" width="40%" align="right"> <a accesskey="n" href="FAQ.html">Valgrind FAQ >></a> </td> </tr> <tr><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td></tr> </table> </div> </body> </html>