globalarrays.github.io/performance.html at main · GlobalArrays/globalarrays.github.io · GitHub

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---
layout: default
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
    <head>
        <title>PNNL: Global Arrays Toolkit, Performance of Selected GA Operations</title>
        <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/>
        <meta  name="description" content="The Global Arrays (GA) toolkit
        provides an efficient and portable &quot;shared-memory&quot;
        programming interface for distributed-memory computers." />
        <meta name="keywords" content="PNNL, Global Arrays, EMSL" />

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    <body>
        <div id="page">
            {% include shared/header.inc %}

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<h1>Performance</h1>

<h2>Gordon Bell Finalist at SC09 - GA Crosses the Petaflop Barrier</h2>
<ul>
    <li>NWChem petascale calculation</li>
    <li>GA-based parallel implementation of coupled cluster calculation
    performed at <em>1.39&nbsp;petaflops using over 223,000 processes</em> on
    ORNL's Jaguar petaflop system. <cite>Apra et al. "Liquid water: obtaining
        the right answer for the right reasons"</cite></li>
    <li>Global Arrays is one of two programming models that have achieved this
    level of performance</li>
</ul>
<p>
<img src="/images/petascale.jpg" width="500" height="364" alt="Floating-Point
Performance" style="margin: 0px 0px 0px 20px;" /><br />
<em style="margin: 10px 0px 10px 20px;">Courtesy: Edo Apra</em>
</p>

<h2>Parallel Matrix Multiply</h2>

<ul>
    <li>Cray XT4</li>
    <li>Matrix size is 65536x65536</li>
</ul>

<p>
<img src="/images/dgemm.jpg" width="500" height="331" alt="Parallel Matrix
Multiply" style="margin: 0px 0px 0px 20px;" />
</p>

<h2>Stomp Speedup</h2>
<p>
<img src="/images/stomp.jpg" width="400" height="388" alt="Stomp Speedup"
style="margin: 0px 0px 0px 20px;" />
</p>

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