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<!doctype html>
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<title>FROOT Lab | University of Maryland</title>
<meta name="description" content="Prof. Alan Liu leads the FROOT Lab in the Department of Computer Science at the University of Maryland, College Park, researching AI systems and infrastructure.">
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<span class="eyebrow">FROOT Lab</span>
<h1>Scalable Systems, Verifiable Intelligence</h1>
<p>We design and evaluate next-generation cloud and AI infrastructure to make computing robust for society.</p>
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<h3>Lab Highlights</h3>
<ul class="metrics">
<li>
<span class="metric-number">6</span>
<span>Active systems research thrusts</span>
</li>
<li>
<span class="metric-number">20+</span>
<span>Student and alumni contributors</span>
</li>
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<span class="metric-number">50+</span>
<span>Publications and open-source artifacts</span>
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</section>
<section id="about" class="section">
<div class="wrap">
<h2 class="section-title">About the Lab</h2>
<p class="section-intro">We build the systems that let AI run <strong>Faster</strong>, stay <strong>Future-pROOf</strong>, and remain <strong>Trustworthy</strong>. From observability that sees everything to infrastructure that survives anything, the FROOT Lab turns hard problems in systems, networking, and security into infrastructure the next generation of AI can rely on.</p>
<div class="card-grid">
<article class="card">
<h3 id="thrust-froot">FROOT</h3>
<p>Future-Proof, Trustworthy Telemetry for high-performance, high-availability networks.</p>
<a class="card-link" href="projects.html#froot" aria-labelledby="thrust-froot"></a>
</article>
<article class="card">
<h3 id="thrust-onset">ONSET</h3>
<p>Optics-enabled network defenses against extreme terabit-scale DDoS attacks.</p>
<a class="card-link" href="projects.html#onset" aria-labelledby="thrust-onset"></a>
</article>
<article class="card">
<h3 id="thrust-aiops">AI for Cloud Ops</h3>
<p>Scalable, automated diagnosis of performance, resilience, and security problems in modern CI/CD.</p>
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<p class="section-intro" style="margin-top: 1rem;">See all six research thrusts on the <a href="projects.html">Projects</a> page.</p>
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<section id="news" class="section">
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<h2 class="section-title">Lab News</h2>
<p class="section-intro">Awards, talks, and releases. See the full history on the <a href="news.html">News</a> page.</p>
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<!-- Keep this to the 3 most recent items; the full history lives on news.html -->
<article class="card">
<span class="news-date">July 2026</span>
<h3 id="news-r2cc-nsdi">R2CC accepted to NSDI '27</h3>
<p>Congrats to Wei, Nengneng, Sixian, and the team!</p>
<a class="card-link" href="news.html" aria-labelledby="news-r2cc-nsdi"></a>
</article>
<article class="card">
<span class="news-date">July 2026</span>
<h3 id="news-pcl-award">NSF PCL award received</h3>
<p>New funding to work on AI acceleration for autonomous biomanufacturing. Thanks, NSF!</p>
<a class="card-link" href="news.html" aria-labelledby="news-pcl-award"></a>
</article>
<article class="card">
<span class="news-date">May 2026</span>
<h3 id="news-career-award">Prof. Liu receives the NSF CAREER Award</h3>
<p>Honored to receive this recognition for early-career research. Thanks, NSF!</p>
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</article>
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</div>
</section>
<section id="projects" class="section">
<div class="wrap">
<h2 class="section-title">Recent Projects</h2>
<p class="section-intro">Recent systems efforts from the lab. See the full list on the <a href="projects.html">Projects</a> page, or browse our code on <a href="https://github.com/Froot-NetSys" target="_blank" rel="noopener">GitHub</a>.</p>
<div class="featured-project">
<div class="featured-body">
<h3>DMXLab</h3>
<p>A framework to build the observability infrastructure and scientific methods needed to understand, debug, and control deep models during real inference.</p>
</div>
<a class="button primary" href="https://projectdmx.github.io/" target="_blank" rel="noopener">View Project</a>
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<div class="featured-project">
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<h3>ProjectASAP</h3>
<p>A visionary effort on how we can build better, faster, and cheaper data pipelines to support the next generation of agentic workloads.</p>
</div>
<a class="button primary" href="https://projectasap.github.io/" target="_blank" rel="noopener">View Project</a>
</div>
</div>
</section>
<section id="publications" class="section">
<div class="wrap">
<h2 class="section-title">Publications</h2>
<p class="section-intro">Recent papers from the lab. See the full list on the <a href="publications.html">Publications</a> page.</p>
<div class="two-col">
<article class="card">
<h4 id="pub-r2cc">R2CC: Reliable and Resilient Collective Communication for Distributed Learning</h4>
<p>Wei Wang, Nengneng Yu, Sixian Xiong, Zaoxing Liu — USENIX NSDI '27</p>
<a class="card-link" href="publications.html#r2cc" aria-labelledby="pub-r2cc"></a>
</article>
<article class="card">
<h4 id="pub-zk-analytics">Zero-Knowledge Cloud Analytics (zk-Analytics)</h4>
<p>Zeying Zhu, Clarence Lam, Alexander Frolov, Ian Miers, Zaoxing Liu — ACM SIGCOMM '26</p>
<a class="card-link" href="publications.html#zk-analytics" aria-labelledby="pub-zk-analytics"></a>
</article>
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<h2>Join the Lab</h2>
<p>Come build next-generation cloud and AI systems with us at the University of Maryland. Self-motivated interns and PhD applicants are especially encouraged to reach out.</p>
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<a href="assets/files/UMD-PhD-Recruit.pdf" target="_blank" rel="noopener">PhD Recruitment Brief (PDF)</a>
<a href="assets/files/Why-UMD.pdf" target="_blank" rel="noopener">Why UMD? (PDF)</a>
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<h2 class="section-title">Sponsors</h2>
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<li class="sponsor-sq"><a href="https://www.microsoft.com/en-us/research/" target="_blank" rel="noopener"><img src="assets/img/sponsors/microsoft.svg" alt="Microsoft"></a></li>
<li><a href="https://arl.devcom.army.mil/" target="_blank" rel="noopener"><img src="assets/img/sponsors/army-research-lab.png" alt="Army Research Laboratory"></a></li>
<li class="sponsor-dark"><a href="https://www.laude.org/moonshots" target="_blank" rel="noopener"><img src="assets/img/sponsors/laude-moonshots.jpg" alt="Laude Moonshots"></a></li>
<li><a href="https://www.janestreet.com/" target="_blank" rel="noopener"><img src="assets/img/sponsors/jane-street.svg" alt="Jane Street"></a></li>
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<li class="sponsor-muted sponsor-tall"><a href="https://research.redhat.com/" target="_blank" rel="noopener"><img src="assets/img/sponsors/redhat.png" alt="Red Hat"></a></li>
<li class="sponsor-muted"><a href="https://massopen.cloud/" target="_blank" rel="noopener"><img src="assets/img/sponsors/mass-open-cloud.png" alt="Mass Open Cloud"></a></li>
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