blob: de117a7035ab998fe332988dfcc9d9a0a60b1288 [file] [log] [blame]
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>gem5</title>
<!-- SITE FAVICON -->
<link rel="shortcut icon" type="image/gif" href="/assets/img/gem5ColorVert.gif"/>
<link rel="canonical" href="http://localhost:4000/introduction/">
<link href='https://fonts.googleapis.com/css?family=Open+Sans:400,300,700,800,600' rel='stylesheet' type='text/css'>
<link href='https://fonts.googleapis.com/css?family=Muli:400,300' rel='stylesheet' type='text/css'>
<!-- FAVICON -->
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
<!-- BOOTSTRAP -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<!-- CUSTOM CSS -->
<link rel="stylesheet" href="/css/main.css">
</head>
<body>
<nav class="navbar navbar-expand-md navbar-light bg-light">
<a class="navbar-brand" href="/">
<img src="/assets/img/gem5ColorLong.gif" alt="gem5" height=45px>
</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavDropdown">
<ul class="navbar-nav ml-auto">
<li class="nav-item ">
<a class="nav-link" href="/">Home</a>
</li>
<li class="nav-item dropdown ">
<a class="nav-link dropdown-toggle" href="/about" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
About
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
<a class="dropdown-item" href="/about">About</a>
<a class="dropdown-item" href="/publications">Publications</a>
<a class="dropdown-item" href="/governance">Governance</a>
</div>
</li>
<li class="nav-item dropdown active">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Documentation
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
<!-- Pull navigation from _data/documentation.yml -->
<a class="dropdown-item" href="/introduction">Introduction</a>
<a class="dropdown-item" href="/building">Getting Started</a>
<a class="dropdown-item" href="/environment">Modifying/Extending</a>
<a class="dropdown-item" href="/intro">Modeling Cache Coherence with Ruby</a>
</div>
</li>
<li class="nav-item ">
<a class="nav-link" href="/contributing">Contributing</a>
</li>
<li class="nav-item ">
<a class="nav-link" href="/search">Search</a>
</li>
</ul>
</div>
</nav>
<main>
<div class="sidenav-top">
<img src="/assets/img/gem5ColorLong.gif" height="80">
</div>
<div class="sidenav">
<div class="search">
<form action="/search" method="get">
<!-- <label for="search-box"><i class="fa fa-search"></i></label> -->
<input type="text" name="query">
<button type="submit" name="submit"><i class="fa fa-search"></i></button>
</form>
</div>
<!-- Pull navigation from _data/documentation.yml -->
<a class="item" href="/introduction" role="button" aria-expanded="false" aria-controls="collapseExample">
Introduction
</a>
<div class="collapse " id="introdution">
</div>
<a class="item" data-toggle="collapse" href="#pt1" role="button" aria-expanded="false" aria-controls="collapseExample">
Getting Started
</a>
<div class="collapse " id="pt1">
<a class="subitem " href="/building">Building gem5</a>
<a class="subitem " href="/simple_config">Creating a simple configuration script</a>
<a class="subitem " href="/cache_config">Adding cache to configuration script</a>
<a class="subitem " href="/gem5_stats">Understanding gem5 statistics and output</a>
<a class="subitem " href="/example_configs">Using the default configuration scripts</a>
</div>
<a class="item" data-toggle="collapse" href="#pt2" role="button" aria-expanded="false" aria-controls="collapseExample">
Modifying/Extending
</a>
<div class="collapse " id="pt2">
<a class="subitem " href="/environment">Setting up your development environment</a>
<a class="subitem " href="/helloobject">Creating a very simple SimObject</a>
<a class="subitem " href="/debugging">Debugging gem5</a>
<a class="subitem " href="/events">Event-driven programming</a>
<a class="subitem " href="/parameters">Adding parameters to SimObjects and more events</a>
<a class="subitem " href="/memoryobject">Creating SimObjects in the memory system</a>
<a class="subitem " href="/simplecache">Creating a simple cache object</a>
</div>
<a class="item" data-toggle="collapse" href="#pt3" role="button" aria-expanded="false" aria-controls="collapseExample">
Modeling Cache Coherence with Ruby
</a>
<div class="collapse " id="pt3">
<a class="subitem " href="/intro">Introduction to Ruby</a>
<a class="subitem " href="/cache-intro">MSI example cache protocol</a>
<a class="subitem " href="/cache-declarations">Declaring a state machine</a>
<a class="subitem " href="/cache-in-ports">In port code blocks</a>
<a class="subitem " href="/cache-actions">Action code blocks</a>
<a class="subitem " href="/cache-transitions">Transition code blocks</a>
<a class="subitem " href="/directory">MSI Directory implementation</a>
<a class="subitem " href="/MSIbuilding">Compiling a SLICC protocol</a>
<a class="subitem " href="/configuration">Configuring a simple Ruby system</a>
<a class="subitem " href="/running">Running the simple Ruby system</a>
<a class="subitem " href="/MSIdebugging">Debugging SLICC Protocols</a>
<a class="subitem " href="/simple-MI_example">Configuring for a standard protocol</a>
</div>
</div>
<div class="container" id="doc-container">
<!-- <h1>Introduction</h1> -->
<dl>
<dt>authors</dt>
<dd>Jason Lowe-Power</dd>
</dl>
<h1 id="introduction">Introduction</h1>
<p>This is an intro to this tutorial. It says lots of interesting things.</p>
<p>The goal of this document is to give you, the reader, a thorough
introduction on how to use gem5 and the gem5 codebase. The purpose of
this document is not to provide a detailed description of every feature
in gem5. After reading this document, you should feel comfortable using
gem5 in the classroom and for computer architecture research.
Additionally, you should be able to modify and extend gem5 and then
contribute your improvements to the main gem5 repository.</p>
<p>This document is colored by my personal experiences with gem5 over the
past six years as a graduate student at the University of
Wisconsin-Madison. The examples presented are just one way to do it.
Unlike Python, whose mantra is “There should be one– and preferably
only one –obvious way to do it.” (from The Zen of Python. See
<code class="highlighter-rouge">import this</code>), in gem5 there are a number of different ways to
accomplish the same thing. Thus, many of the examples presented in this
book are my opinion of the best way to do things.</p>
<p>One important lesson I have learned (the hard way) is when using complex
tools like gem5, it is important to actually understand how it works
before using it.</p>
<p>Finish the previous paragraph about how it is a good idea to understand
what your tools are actually doing.</p>
<p>should add a list of terms. Things like “simulated system” vs “host
system”, etc.</p>
<p>You can find the source for this book on github at
<a href="https://github.com/powerjg/learning_gem5">https://github.com/powerjg/learning_gem5</a>.</p>
</div>
</main>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
<script>
// When the user scrolls down 20px from the top of the document, show the button
window.onscroll = function() {scrollFunction()};
function scrollFunction() {
if (document.body.scrollTop > 100 || document.documentElement.scrollTop > 20) {
document.getElementById("myBtn").style.display = "block";
} else {
document.getElementById("myBtn").style.display = "none";
}
}
// When the user clicks on the button, scroll to the top of the document
function topFunction() {
document.body.scrollTop = 0;
document.documentElement.scrollTop = 0;
}
</script>
</body>
<footer class="page-footer">
<div class="container">
<div class="row">
<div class="col-12 col-sm-4">
<p><a href="/about">About</a></p>
<p><a href="/publications">Publications</a></p>
<p><a href="/contributing">Contributing</a></p>
</div><br>
<div class="col-12 col-sm-4">
<p><a href="/gettingstarted">Documentation</a></p>
<p><a href="#">Source</a></p>
</div><br>
<div class="col-12 col-sm-4">
<p><a href="/help">Help</a></p>
<p><a href="/search">Search</a></p>
<p><a href="#">Mailing Lists</a></p>
</div>
</div>
</div>
</footer>
</html>