blob: 9adf050450fd2069d354f72ae45c66a146efe6d8 [file] [log] [blame]
<!doctype html>
<html lang="en" class="no-js">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<link rel="shortcut icon" href="../../../assets/images/favicon.png">
<meta name="generator" content="mkdocs-1.1.2, mkdocs-material-5.4.0">
<title>Multi-threaded execution of Epsilon programs - Epsilon</title>
<link rel="stylesheet" href="../../../assets/stylesheets/main.fe0cca5b.min.css">
<link rel="stylesheet" href="../../../assets/stylesheets/palette.a46bcfb3.min.css">
<meta name="theme-color" content="">
<link href="https://fonts.gstatic.com" rel="preconnect" crossorigin>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,400i,700%7CRoboto+Mono&display=fallback">
<style>body,input{font-family:"Roboto",-apple-system,BlinkMacSystemFont,Helvetica,Arial,sans-serif}code,kbd,pre{font-family:"Roboto Mono",SFMono-Regular,Consolas,Menlo,monospace}</style>
<link rel="stylesheet" href="../../../assets/stylesheets/mermaid.css">
<link rel="stylesheet" href="../../../assets/javascript/google-code-prettify/prettify.css">
<link rel="stylesheet" href="https://unpkg.com/mermaid@8.5.1/dist/mermaid.css">
<link rel="stylesheet" href="../../../assets/stylesheets/slick.css">
<link rel="stylesheet" href="../../../assets/stylesheets/slick-theme.css">
<link rel="stylesheet" href="../../../assets/stylesheets/extra.css">
<script>
window.ga = window.ga || function() {
(ga.q = ga.q || []).push(arguments)
}
ga.l = +new Date
/* Setup integration and send page view */
ga("create", "UA-184785655-1", "auto")
ga("set", "anonymizeIp", true)
ga("send", "pageview")
/* Register handler to log search on blur */
document.addEventListener("DOMContentLoaded", () => {
if (document.forms.search) {
var query = document.forms.search.query
query.addEventListener("blur", function() {
if (this.value) {
var path = document.location.pathname;
ga("send", "pageview", path + "?q=" + this.value)
}
})
}
})
</script>
<script async src="https://www.google-analytics.com/analytics.js"></script>
</head>
<body dir="ltr" data-md-color-scheme="" data-md-color-primary="black" data-md-color-accent="orange">
<input class="md-toggle" data-md-toggle="drawer" type="checkbox" id="__drawer" autocomplete="off">
<input class="md-toggle" data-md-toggle="search" type="checkbox" id="__search" autocomplete="off">
<label class="md-overlay" for="__drawer"></label>
<div data-md-component="skip">
<a href="#multi-threaded-execution-of-epsilon-programs" class="md-skip">
Skip to content
</a>
</div>
<div data-md-component="announce">
</div>
<header class="md-header" data-md-component="header">
<nav class="md-header-nav md-grid" aria-label="Header">
<a href="../../.." title="Epsilon" class="md-header-nav__button md-logo" aria-label="Epsilon">
<img src="../../../assets/images/epsilon-white-background.png" alt="logo">
</a>
<label class="md-header-nav__button md-icon" for="__drawer">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M3 6h18v2H3V6m0 5h18v2H3v-2m0 5h18v2H3v-2z"/></svg>
</label>
<div class="md-header-nav__title" data-md-component="header-title">
<div class="md-header-nav__ellipsis">
<span class="md-header-nav__topic md-ellipsis">
Epsilon
</span>
<span class="md-header-nav__topic md-ellipsis">
Multi-threaded execution of Epsilon programs
</span>
</div>
</div>
<label class="md-header-nav__button md-icon" for="__search">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0116 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 019.5 16 6.5 6.5 0 013 9.5 6.5 6.5 0 019.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5z"/></svg>
</label>
<div class="md-search" data-md-component="search" role="dialog">
<label class="md-search__overlay" for="__search"></label>
<div class="md-search__inner" role="search">
<form class="md-search__form" name="search">
<input type="text" class="md-search__input" name="query" aria-label="Search" placeholder="Search" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" data-md-component="search-query" data-md-state="active">
<label class="md-search__icon md-icon" for="__search">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0116 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 019.5 16 6.5 6.5 0 013 9.5 6.5 6.5 0 019.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5z"/></svg>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12z"/></svg>
</label>
<button type="reset" class="md-search__icon md-icon" aria-label="Clear" data-md-component="search-reset" tabindex="-1">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12 19 6.41z"/></svg>
</button>
</form>
<div class="md-search__output">
<div class="md-search__scrollwrap" data-md-scrollfix>
<div class="md-search-result" data-md-component="search-result">
<div class="md-search-result__meta">
Initializing search
</div>
<ol class="md-search-result__list"></ol>
</div>
</div>
</div>
</div>
</div>
<div class="md-header-nav__source">
<a href="https://git.eclipse.org/c/epsilon/org.eclipse.epsilon.git/" title="Go to repository" class="md-source">
<div class="md-source__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path d="M439.55 236.05L244 40.45a28.87 28.87 0 00-40.81 0l-40.66 40.63 51.52 51.52c27.06-9.14 52.68 16.77 43.39 43.68l49.66 49.66c34.23-11.8 61.18 31 35.47 56.69-26.49 26.49-70.21-2.87-56-37.34L240.22 199v121.85c25.3 12.54 22.26 41.85 9.08 55a34.34 34.34 0 01-48.55 0c-17.57-17.6-11.07-46.91 11.25-56v-123c-20.8-8.51-24.6-30.74-18.64-45L142.57 101 8.45 235.14a28.86 28.86 0 000 40.81l195.61 195.6a28.86 28.86 0 0040.8 0l194.69-194.69a28.86 28.86 0 000-40.81z"/></svg>
</div>
<div class="md-source__repository">
Git repository @ Eclipse
</div>
</a>
</div>
</nav>
</header>
<div class="md-container" data-md-component="container">
<main class="md-main" data-md-component="main">
<div class="md-main__inner md-grid">
<div class="md-sidebar md-sidebar--primary" data-md-component="navigation">
<div class="md-sidebar__scrollwrap">
<div class="md-sidebar__inner">
<nav class="md-nav md-nav--primary" aria-label="Navigation" data-md-level="0">
<label class="md-nav__title" for="__drawer">
<a href="../../.." title="Epsilon" class="md-nav__button md-logo" aria-label="Epsilon">
<img src="../../../assets/images/epsilon-white-background.png" alt="logo">
</a>
Epsilon
</label>
<div class="md-nav__source">
<a href="https://git.eclipse.org/c/epsilon/org.eclipse.epsilon.git/" title="Go to repository" class="md-source">
<div class="md-source__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path d="M439.55 236.05L244 40.45a28.87 28.87 0 00-40.81 0l-40.66 40.63 51.52 51.52c27.06-9.14 52.68 16.77 43.39 43.68l49.66 49.66c34.23-11.8 61.18 31 35.47 56.69-26.49 26.49-70.21-2.87-56-37.34L240.22 199v121.85c25.3 12.54 22.26 41.85 9.08 55a34.34 34.34 0 01-48.55 0c-17.57-17.6-11.07-46.91 11.25-56v-123c-20.8-8.51-24.6-30.74-18.64-45L142.57 101 8.45 235.14a28.86 28.86 0 000 40.81l195.61 195.6a28.86 28.86 0 0040.8 0l194.69-194.69a28.86 28.86 0 000-40.81z"/></svg>
</div>
<div class="md-source__repository">
Git repository @ Eclipse
</div>
</a>
</div>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../.." title="Home" class="md-nav__link">
Home
</a>
</li>
<li class="md-nav__item">
<a href="../../../download/" title="Download" class="md-nav__link">
Download
</a>
</li>
<li class="md-nav__item">
<a href="../../../getting-started/" title="Getting Started" class="md-nav__link">
Getting Started
</a>
</li>
<li class="md-nav__item">
<a href="../../../live" title="Playground" class="md-nav__link">
Playground
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="nav-5" type="checkbox" id="nav-5">
<label class="md-nav__link" for="nav-5">
Documentation
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59 16.58L13.17 12 8.59 7.41 10 6l6 6-6 6-1.41-1.42z"/></svg>
</span>
</label>
<nav class="md-nav" aria-label="Documentation" data-md-level="1">
<label class="md-nav__title" for="nav-5">
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12z"/></svg>
</span>
Documentation
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../" title="Overview" class="md-nav__link">
Overview
</a>
</li>
<li class="md-nav__item">
<a href="../../emc/" title="Model Connectivity" class="md-nav__link">
Model Connectivity
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="nav-5-3" type="checkbox" id="nav-5-3">
<label class="md-nav__link" for="nav-5-3">
Languages
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59 16.58L13.17 12 8.59 7.41 10 6l6 6-6 6-1.41-1.42z"/></svg>
</span>
</label>
<nav class="md-nav" aria-label="Languages" data-md-level="2">
<label class="md-nav__title" for="nav-5-3">
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12z"/></svg>
</span>
Languages
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../eol/" title="Object Language (EOL)" class="md-nav__link">
Object Language (EOL)
</a>
</li>
<li class="md-nav__item">
<a href="../../egl/" title="Code Generation (EGL)" class="md-nav__link">
Code Generation (EGL)
</a>
</li>
<li class="md-nav__item">
<a href="../../evl/" title="Model Validation (EVL)" class="md-nav__link">
Model Validation (EVL)
</a>
</li>
<li class="md-nav__item">
<a href="../../etl/" title="Model Transformation (ETL)" class="md-nav__link">
Model Transformation (ETL)
</a>
</li>
<li class="md-nav__item">
<a href="../../ecl/" title="Model Comparison (ECL)" class="md-nav__link">
Model Comparison (ECL)
</a>
</li>
<li class="md-nav__item">
<a href="../../eml/" title="Model Merging (EML)" class="md-nav__link">
Model Merging (EML)
</a>
</li>
<li class="md-nav__item">
<a href="../../epl/" title="Pattern Matching (EPL)" class="md-nav__link">
Pattern Matching (EPL)
</a>
</li>
<li class="md-nav__item">
<a href="../../flock/" title="Model Migration (Flock)" class="md-nav__link">
Model Migration (Flock)
</a>
</li>
<li class="md-nav__item">
<a href="../../emg/" title="Model Generation (EMG)" class="md-nav__link">
Model Generation (EMG)
</a>
</li>
<li class="md-nav__item">
<a href="../../eunit/" title="Unit Testing (EUnit)" class="md-nav__link">
Unit Testing (EUnit)
</a>
</li>
<li class="md-nav__item">
<a href="../../pinset/" title="Dataset Extraction (Pinset)" class="md-nav__link">
Dataset Extraction (Pinset)
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="nav-5-4" type="checkbox" id="nav-5-4">
<label class="md-nav__link" for="nav-5-4">
Tools
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59 16.58L13.17 12 8.59 7.41 10 6l6 6-6 6-1.41-1.42z"/></svg>
</span>
</label>
<nav class="md-nav" aria-label="Tools" data-md-level="2">
<label class="md-nav__title" for="nav-5-4">
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12z"/></svg>
</span>
Tools
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../picto/" title="Picto" class="md-nav__link">
Picto
</a>
</li>
<li class="md-nav__item">
<a href="../../flexmi/" title="Flexmi" class="md-nav__link">
Flexmi
</a>
</li>
<li class="md-nav__item">
<a href="../../eugenia/" title="Eugenia" class="md-nav__link">
Eugenia
</a>
</li>
<li class="md-nav__item">
<a href="../../exeed/" title="Exeed" class="md-nav__link">
Exeed
</a>
</li>
<li class="md-nav__item">
<a href="../../modelink/" title="Modelink" class="md-nav__link">
Modelink
</a>
</li>
<li class="md-nav__item">
<a href="../../hutn/" title="HUTN" class="md-nav__link">
HUTN
</a>
</li>
<li class="md-nav__item">
<a href="../../workflow/" title="Workflow (Ant tasks)" class="md-nav__link">
Workflow (Ant tasks)
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../" title="Articles" class="md-nav__link">
Articles
</a>
</li>
<li class="md-nav__item">
<a href="../../../examples/" title="Examples" class="md-nav__link">
Examples
</a>
</li>
<li class="md-nav__item">
<a href="https://www.youtube.com/epsilondevs" title="Screencasts" class="md-nav__link">
Screencasts
</a>
</li>
<li class="md-nav__item">
<a href="https://www.youtube.com/playlist?list=PLRwHao6Ue0YUecg7vEUQTrtySIWwrd_mI" title="Lectures" class="md-nav__link">
Lectures
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="nav-5-9" type="checkbox" id="nav-5-9">
<label class="md-nav__link" for="nav-5-9">
Javadoc
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59 16.58L13.17 12 8.59 7.41 10 6l6 6-6 6-1.41-1.42z"/></svg>
</span>
</label>
<nav class="md-nav" aria-label="Javadoc" data-md-level="2">
<label class="md-nav__title" for="nav-5-9">
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12z"/></svg>
</span>
Javadoc
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="https://download.eclipse.org/epsilon/stable-javadoc/" title="Stable" class="md-nav__link">
Stable
</a>
</li>
<li class="md-nav__item">
<a href="https://download.eclipse.org/epsilon/interim-javadoc/" title="Interim" class="md-nav__link">
Interim
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="nav-6" type="checkbox" id="nav-6">
<label class="md-nav__link" for="nav-6">
Issues
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59 16.58L13.17 12 8.59 7.41 10 6l6 6-6 6-1.41-1.42z"/></svg>
</span>
</label>
<nav class="md-nav" aria-label="Issues" data-md-level="1">
<label class="md-nav__title" for="nav-6">
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12z"/></svg>
</span>
Issues
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="https://bugs.eclipse.org/bugs/enter_bug.cgi?product=epsilon" title="Report a new issue" class="md-nav__link">
Report a new issue
</a>
</li>
<li class="md-nav__item">
<a href="https://bugs.eclipse.org/bugs/buglist.cgi?product=epsilon&cmdtype=doit&order=Reuse+same+sort+as+last+time&bug_status=UNCONFIRMED&bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&bug_severity=blocker&bug_severity=critical&bug_severity=major&bug_severity=normal&bug_severity=minor&bug_severity=trivial" title="View open bugs" class="md-nav__link">
View open bugs
</a>
</li>
<li class="md-nav__item">
<a href="https://bugs.eclipse.org/bugs/buglist.cgi?product=epsilon&cmdtype=doit&order=Reuse+same+sort+as+last+time&bug_status=UNCONFIRMED&bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&bug_severity=enhancement" title="View enhancement requests" class="md-nav__link">
View enhancement requests
</a>
</li>
<li class="md-nav__item">
<a href="https://bugs.eclipse.org/bugs/buglist.cgi?bug_status=RESOLVED&list_id=17694438&product=epsilon&query_format=advanced" title="View issues resolved since the last stable release" class="md-nav__link">
View issues resolved since the last stable release
</a>
</li>
<li class="md-nav__item">
<a href="https://bugs.eclipse.org/bugs/buglist.cgi?product=epsilon&cmdtype=doit&order=Reuse+same+sort+as+last+time" title="View all issues" class="md-nav__link">
View all issues
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="nav-7" type="checkbox" id="nav-7">
<label class="md-nav__link" for="nav-7">
Community
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59 16.58L13.17 12 8.59 7.41 10 6l6 6-6 6-1.41-1.42z"/></svg>
</span>
</label>
<nav class="md-nav" aria-label="Community" data-md-level="1">
<label class="md-nav__title" for="nav-7">
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12z"/></svg>
</span>
Community
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="nav-7-1" type="checkbox" id="nav-7-1">
<label class="md-nav__link" for="nav-7-1">
Who is using Epsilon?
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59 16.58L13.17 12 8.59 7.41 10 6l6 6-6 6-1.41-1.42z"/></svg>
</span>
</label>
<nav class="md-nav" aria-label="Who is using Epsilon?" data-md-level="2">
<label class="md-nav__title" for="nav-7-1">
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12z"/></svg>
</span>
Who is using Epsilon?
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../../../users/" title="Industry" class="md-nav__link">
Industry
</a>
</li>
<li class="md-nav__item">
<a href="../../../users/education/" title="Education" class="md-nav__link">
Education
</a>
</li>
<li class="md-nav__item">
<a href="../../../users/open-source/" title="Open-source Projects" class="md-nav__link">
Open-source Projects
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="https://projects.eclipse.org/projects/modeling.epsilon/who" title="Who is developing Epsilon?" class="md-nav__link">
Who is developing Epsilon?
</a>
</li>
<li class="md-nav__item">
<a href="https://www.eclipse.org/forums/index.php/f/22/" title="Forum" class="md-nav__link">
Forum
</a>
</li>
<li class="md-nav__item">
<a href="../../../professional-services" title="Professional Services" class="md-nav__link">
Professional Services
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="nav-7-5" type="checkbox" id="nav-7-5">
<label class="md-nav__link" for="nav-7-5">
Social Media
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59 16.58L13.17 12 8.59 7.41 10 6l6 6-6 6-1.41-1.42z"/></svg>
</span>
</label>
<nav class="md-nav" aria-label="Social Media" data-md-level="2">
<label class="md-nav__title" for="nav-7-5">
<span class="md-nav__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12z"/></svg>
</span>
Social Media
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="https://twitter.com/eclipseepsilon" title="Twitter" class="md-nav__link">
Twitter
</a>
</li>
<li class="md-nav__item">
<a href="https://youtube.com/epsilondevs" title="YouTube" class="md-nav__link">
YouTube
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../../../labs/" title="Epsilon Labs" class="md-nav__link">
Epsilon Labs
</a>
</li>
<li class="md-nav__item">
<a href="../../../faq/" title="Frequently Asked Questions" class="md-nav__link">
Frequently Asked Questions
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../../../branding/" title="Branding" class="md-nav__link">
Branding
</a>
</li>
</ul>
</nav>
</div>
</div>
</div>
<div class="md-sidebar md-sidebar--secondary" data-md-component="toc">
<div class="md-sidebar__scrollwrap">
<div class="md-sidebar__inner">
<nav class="md-nav md-nav--secondary">
<label class="md-nav__title" for="__toc">Table of contents</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="#annotation-based-parallelism" class="md-nav__link">
Annotation-based parallelism
</a>
</li>
<li class="md-nav__item">
<a href="#limitations" class="md-nav__link">
Limitations
</a>
</li>
</ul>
</nav>
</div>
</div>
</div>
<div class="md-content">
<article class="md-content__inner md-typeset">
<h1 id="multi-threaded-execution-of-epsilon-programs">Multi-threaded execution of Epsilon programs<a class="headerlink" href="#multi-threaded-execution-of-epsilon-programs" title="Permanent link">&para;</a></h1>
<p>Some of Epsilon's languages support parallel execution, which can leverage multiple hardware threads to improve performance. To enable this, head to the <strong>Advanced</strong> tab and select a parallel implementation. Where there are multiple implementations, prefer the "Elements" or "Atom" ones. An "Atom" is a tuple of a module element and model element, so for example a "ContextAtom" in EVL is context-element pair - that is, the granularity of parallelisation will be at the model element level (one job for every model element).</p>
<p><img alt="" src="adv-tab.png" /></p>
<p>Note that the modelling technology must also be able to handle concurrent query operations. Most modelling technologies will likely be supported for read-only model management tasks such as validation and code generation, however some which rely on external tools e.g. Simulink cannot handle concurrent operations. In any case, since most models support caching, the cache must be set up to support concurrency. You should ensure that the appropriate concurrency support option is checked in the model configuration.</p>
<p><img alt="" src="model-conf.png" /></p>
<p>Note that when choosing a parallel implementation, first-order operations such as <code>select</code>, <code>exists</code> etc. will also be parallelised automatically where appropriate. This applies in particular to the parallel EOL implementation.</p>
<h2 id="annotation-based-parallelism">Annotation-based parallelism<a class="headerlink" href="#annotation-based-parallelism" title="Permanent link">&para;</a></h2>
<p>In cases where an "Annotation-based" implementation is available, you can choose which rules are parallelised with the <code>@parallel</code> annotation. For example in EVL:</p>
<pre class="prettyprint lang-evl"><code>context ModelElementType {
@parallel
constraint Invariant {
check {
// ...
}
}</code></pre>
<p>If further control is required, you can also choose whether a rule will be executed in parallel on a per-element basis using an executable annotation. This allows you to write a Boolean EOL expression to determine whether a given model element should be executed in parallel for the annotated rule. You can access the model element in the annotation with <code>self</code> as usual, and also any operations or variables in scope. Any rules not annotated will be executed sequentially.</p>
<pre class="prettyprint lang-evl"><code>pre {
var parallelThreshold = 9001;
}
context ModelElementType {
$parallel self.children.size() &gt; parallelThreshold;
constraint Invariant {
check {
// ...
}
}</code></pre>
<h2 id="limitations">Limitations<a class="headerlink" href="#limitations" title="Permanent link">&para;</a></h2>
<p>Currently Epsilon does not support assignment of extended properties when executing in parallel. Parallel operations also cannot be nested.</p>
</article>
</div>
</div>
</main>
<footer class="md-footer">
<div class="md-footer-meta md-typeset">
<div class="md-footer-meta__inner md-grid">
<div class="md-footer-copyright">
<div class="md-footer-copyright__highlight">
Copyright © Eclipse Foundation, Inc. All Rights Reserved.
</div>
powered by
<a href="https://www.mkdocs.org">MkDocs</a>
and
<a href="https://squidfunk.github.io/mkdocs-material/">Material for MkDocs</a>
</div>
<div class="md-footer-copyright epsilon-eclipse-links">
<ul>
<li><a href="https://www.eclipse.org/legal/privacy.php">Privacy Policy</a></li>
<li><a href="https://www.eclipse.org/legal/termsofuse.php">Terms of Use</a></li>
<li><a href="https://www.eclipse.org/legal/copyright.php">Copyright Agent</a></li>
</ul>
</div>
<div class="md-footer-social">
<a href="https://twitter.com/eclipseepsilon" target="_blank" rel="noopener" title="twitter.com" class="md-footer-social__link">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M459.37 151.716c.325 4.548.325 9.097.325 13.645 0 138.72-105.583 298.558-298.558 298.558-59.452 0-114.68-17.219-161.137-47.106 8.447.974 16.568 1.299 25.34 1.299 49.055 0 94.213-16.568 130.274-44.832-46.132-.975-84.792-31.188-98.112-72.772 6.498.974 12.995 1.624 19.818 1.624 9.421 0 18.843-1.3 27.614-3.573-48.081-9.747-84.143-51.98-84.143-102.985v-1.299c13.969 7.797 30.214 12.67 47.431 13.319-28.264-18.843-46.781-51.005-46.781-87.391 0-19.492 5.197-37.36 14.294-52.954 51.655 63.675 129.3 105.258 216.365 109.807-1.624-7.797-2.599-15.918-2.599-24.04 0-57.828 46.782-104.934 104.934-104.934 30.213 0 57.502 12.67 76.67 33.137 23.715-4.548 46.456-13.32 66.599-25.34-7.798 24.366-24.366 44.833-46.132 57.827 21.117-2.273 41.584-8.122 60.426-16.243-14.292 20.791-32.161 39.308-52.628 54.253z"/></svg>
</a>
<a href="https://youtube.com/epsilondevs" target="_blank" rel="noopener" title="youtube.com" class="md-footer-social__link">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 576 512"><path d="M549.655 124.083c-6.281-23.65-24.787-42.276-48.284-48.597C458.781 64 288 64 288 64S117.22 64 74.629 75.486c-23.497 6.322-42.003 24.947-48.284 48.597-11.412 42.867-11.412 132.305-11.412 132.305s0 89.438 11.412 132.305c6.281 23.65 24.787 41.5 48.284 47.821C117.22 448 288 448 288 448s170.78 0 213.371-11.486c23.497-6.321 42.003-24.171 48.284-47.821 11.412-42.867 11.412-132.305 11.412-132.305s0-89.438-11.412-132.305zm-317.51 213.508V175.185l142.739 81.205-142.739 81.201z"/></svg>
</a>
</div>
</div>
</div>
</footer>
</div>
<script src="../../../assets/javascripts/vendor.d710d30a.min.js"></script>
<script src="../../../assets/javascripts/bundle.b39636ac.min.js"></script><script id="__lang" type="application/json">{"clipboard.copy": "Copy to clipboard", "clipboard.copied": "Copied to clipboard", "search.config.lang": "en", "search.config.pipeline": "trimmer, stopWordFilter", "search.config.separator": "[\\s\\-]+", "search.result.placeholder": "Type to start searching", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents"}</script>
<script>
app = initialize({
base: "../../..",
features: [],
search: Object.assign({
worker: "../../../assets/javascripts/worker/search.a68abb33.min.js"
}, typeof search !== "undefined" && search)
})
</script>
<script src="https://unpkg.com/mermaid@8.5.1/dist/mermaid.min.js"></script>
<script src="../../../assets/javascript/mermaid.js"></script>
<script src="../../../assets/javascript/jquery.js"></script>
<script src="../../../assets/javascript/slick.min.js"></script>
<script src="../../../assets/javascript/google-code-prettify/prettify.js"></script>
<script src="../../../assets/javascript/google-code-prettify/lang-emfatic.js"></script>
<script src="../../../assets/javascript/google-code-prettify/lang-epsilon.js"></script>
<script src="../../../assets/javascript/google-code-prettify/prettyprint.js"></script>
<script src="../../../assets/javascript/extra.js"></script>
<script src="https://w.appzi.io/w.js?token=jlv6W"></script>
</body>
</html>