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          <h1 id="project_title">Orran Krieger</h1>
          <h2 id="project_tagline">Personal web page</h2>

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              <img src="images/orrankrieger.jpg" alt="Orran Krieger" title="Orran Krieger" class="size-thumbnail wp-image-23 alignright" height="150" width="150" />
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            <p>I am Director of <a href="https://research.redhat.com">Red Hat Research</a> (while on leave of absence from Boston University), Director of the <a href="https://massopen.cloud">Mass Open Cloud Alliance</a>, and Professor of Electrical and Computer Engineering and of Computer Science at Boston University.</p>

            <p class="email-highlight"><strong>Email:</strong> okrieger@redhat.com, okrieg@bu.edu</p>

            <!-- <h3><a href="prospectiveStudents.html">Note for Prospective Research Students</a></h3> -->

            <h2>
              <a name="courses" class="anchor" href="#course"><span class="octicon octicon-link"></span></a>Teaching
            </h2>

            <ul>
              <li><a href="cc/cc.html">Fundamentals of cloud computing (EC/CS 528)</a></li>
              <li><a href="os/os.html">Operating systems (EC 400).</a></li>
            </ul>

            <h2>Research</h2>
            <p>I have broad interests in computer systems, with focus on operating systems, file systems, and cloud computing. As co-founder and PI of the <a href="https://massopen.cloud">Mass Open Cloud (MOC)</a>, I am leading efforts to create an open, distributed platform for AI/ML workloads. The MOC establishes a new model for public clouds where multiple stakeholders participate in implementing and operating the infrastructure, creating a multi-sided marketplace. At Red Hat Research, I am working with the global research team on advancing open-source cloud platforms for the AI era. My students and I collaborate closely with <a target="_blank" href="http://www.cs.bu.edu/~jappavoo/jappavoo.github.com/index.html">Jonathan Appavoo</a> on Operating Systems and <a target="_blank" href="https://ccs.neu.edu/~pjd">Peter Desnoyers</a> on storage.</p>

            <h2>Short Bio</h2>
            <p>Despite my best efforts to focus on research and avoid
            management roles, on my sabbatical in 2024 I somehow ended
            up as Director of Red Hat Research leading Red Hat's global
            research team. I am now on leave of absence from BU
	    helping galvanize Red Hat efforts to make the Mass Open
            Cloud an open platform for AI/ML workloads and a place to
            evolve Red Hat's open Sovereign Cloud work. I lead several interconnected open cloud initiatives including the Mass Open Cloud (MOC) and Open Cloud Testbed (OCT)—projects designed to enable innovation by a broad industry and research community. In 2017, together with Red Hat Chairman (now retired) Paul Cormier, I spearheaded Boston University's partnership with Red Hat, establishing the BU Red Hat Collaboratory.</p>

            <p>Before coming to BU, I spent five years at VMware
            starting and working on vCloud Director. Prior to that, I was a researcher and manager at IBM T. J. Watson Research Center, leading the Advanced Operating System Research Department and contributing to projects including K42, <a href="https://dl.acm.org/doi/abs/10.1145/1131322.1131328">rhype</a>, PHYP, Cell, and Linux. I obtained my PhD and MASc in Electrical Engineering from the University of Toronto, where my research focused on the Hurricane and Tornado operating systems and multiprocessor architecture.</p>

            <h2>Some Recent Publications</h2>

              <p>Ali Raza, Thomas Unger, Matthew Boyd, Eric B. Munson, Parul Sohal, Ulrich Drepper, Richard Jones, Daniel Bristot de Oliveira, Larry Woodman, Renato Mancuso, Jonathan Appavoo, Orran Krieger. <strong><a href="https://dl.acm.org/doi/10.1145/3552326.3587458">"Unikernel Linux (UKL)."</a></strong> EuroSys 2023: 590-605</p>

              <p>Mohammad Hossein Hajkazemi, Vojtech Aschenbrenner, Mania Abdi, Emine Ugur Kaynar, Amin Mossayebzadeh, Orran Krieger, Peter Desnoyers. <strong><a href="https://dl.acm.org/doi/10.1145/3492321.3524271">"Beating the I/O bottleneck: a case for log-structured virtual disks."</a></strong> EuroSys 2022: 628-643</p>

              <p>Parul Sohal, Michael Garrett Bechtel, Renato Mancuso, Heechul Yun, Orran Krieger. <strong><a href="https://dl.acm.org/doi/10.1145/3534879.3534882">"A Closer Look at Intel Resource Director Technology (RDT)."</a></strong> RTNS 2022: 127-139</p>

              <p>Michael Zink, David E. Irwin, Emmanuel Cecchet, Hakan Saplakoglu, Orran Krieger, Martin C. Herbordt, Michael Daitzman, Peter Desnoyers, Miriam Leeser, Suranga Handagala. <strong><a href="https://doi.org/10.1109/CloudNet53349.2021.9657109">"The Open Cloud Testbed (OCT): A Platform for Research into new Cloud Technologies."</a></strong> CloudNet 2021: 140-147</p>

              <p>Mania Abdi, Amin Mosayyebzadeh, Mohammad Hossein Hajkazemi, Emine Ugur Kaynar, Ata Turk, Larry Rudolph, Orran Krieger, Peter Desnoyers. <strong><a href="https://www.usenix.org/conference/fast21/presentation/abdi">"A Community Cache with Complete Information."</a></strong> FAST 2021: 323-340</p>

              <p>James Cadden, Thomas Unger, Yara Awad, Han Dong, Orran Krieger, Jonathan Appavoo. <strong><a href="https://dl.acm.org/doi/10.1145/3342195.3392698">"SEUSS: skip redundant paths to make serverless fast."</a></strong> EuroSys 2020</p>

              <p>Amin Mosayyebzadeh, Apoorve Mohan, Sahil Tikale, Mania Abdi, Nabil Schear, Trammell Hudson, Charles Munson, Larry Rudolph, Gene Cooperman, Peter Desnoyers, Orran Krieger. <strong><a href="https://www.usenix.org/conference/atc19/presentation/mosayyebzadeh">"Supporting Security Sensitive Tenants in a Bare-Metal Cloud."</a></strong> USENIX ATC 2019</p>

              <p>Andrew Baumann, Jonathan Appavoo, Orran Krieger, Timothy Roscoe. <strong><a href="https://dl.acm.org/doi/10.1145/3317550.3321435">"A fork() in the road."</a></strong> HotOS 2019</p>

              <p>Dan Schatzberg, James Cadden, Han Dong, Orran Krieger, Jonathan Appavoo. <strong><a href="https://www.usenix.org/conference/osdi16/technical-sessions/presentation/schatzberg">"EbbRT: A Framework for Building Per-Application Library Operating Systems."</a></strong> OSDI 2016</p>

            <p class="publications-note"><em>For a complete list of publications with citation counts, please visit my <a href="http://scholar.google.com/citations?user=96QTY3cAAAAJ&amp;hl=en">Google Scholar Profile</a>.</em></p>

            <h2>PhD Students and Postdocs</h2>
            <p>Students/Postdocs whose research I have played a major role in supervising since coming to Boston University:</p>

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                <h3>Former</h3>
                <ul class="students-list">
                  <li><a href="https://scholar.google.com/citations?user=iSSGKzsAAAAJ&hl=en">Mania Abdi</a></li>
                  <li><a href="https://www.linkedin.com/in/jimcadden/">Jim Cadden</a></li>
                  <li><a href="https://www.linkedin.com/in/mohammad-hossein-hajkazemi-670a992a/">Mohammad Hossein Hajkazemi</a></li>
                  <li><a href="https://www.ugurkaynar.com/">Ugur Kaynar</a></li>
                  <li><a href="https://razaaliraza.github.io/">Ali Raza</a></li>
                  <li><a href="https://www.linkedin.com/in/dan-schatzberg-383a1a14/">Dan Schatzberg</a></li>
                  <li><a href="https://www.nokia.com/people/sahil-tikale/">Sahil Tikale</a></li>
                </ul>

                <h3>Postdoc</h3>
                <ul class="students-list">
                  <li><a href="https://ataturk.github.io/">Ata Turk</a></li>
                </ul>
              </div>

              <div class="students-current">
                <h3>Current</h3>
                <ul class="students-list">
                  <li><a href="https://www.linkedin.com/in/sumatra-dhimoyee-41a178121/">Sumatra Dhimoyee</a></li>
                  <li><a href="https://mosayyebzadeh.github.io/">Amin Mosayyebzadeh</a></li>
                  <li><a href="https://research.redhat.com/blog/project_member/eric-munson/">Eric Munson</a></li>
                  <li><a href="https://scholar.google.com/citations?hl=en&user=hhF80yEAAAAJ">Ayesha Naeem</a></li>
                  <li><a href="https://cs-people.bu.edu/psohal/">Parul Sohal</a></li>
                </ul>
              </div>
            </div>
          </div>

          <!-- Right Column: Major Projects -->
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            <h2>Major Projects</h2>

            <div class="project">
              <h3>Mass Open Cloud (MOC)</h3>
              <p>Open, multi-stakeholder public cloud platform establishing a new model where multiple stakeholders participate in implementing and operating cloud infrastructure.</p>
              <p><a href="https://massopen.cloud">Website</a> | <a href="https://research.redhat.com/mass-open-cloud/">Red Hat Research</a></p>
            </div>

            <div class="project">
              <h3>Open Sovereign AI Cloud (OSAC)</h3>
              <p>Open-source solution for organizations standing up sovereign clouds, providing infrastructure services for AI/ML workloads.</p>
              <p><a href="https://github.com/osac-project/docs/">GitHub Documentation</a></p>
            </div>

            <div class="project">
              <h3>K42</h3>
              <p>Scalable, Linux-compatible research operating system developed at IBM Research, demonstrating advanced OS design principles for multiprocessor systems.</p>
              <p><a href="https://dl.acm.org/doi/10.1145/1218063.1217949">EuroSys '06</a> | <a href="https://dl.acm.org/doi/10.1145/1131322.1131333">SIGOPS '06</a> | <a href="https://dl.acm.org/doi/10.1147/sj.442.0427">IBM Systems Journal '05</a></p>
            </div>

            <div class="project">
              <h3>Tornado</h3>
              <p>Operating system for shared memory multiprocessors, maximizing locality and concurrency through innovative design principles.</p>
              <p><a href="https://www.usenix.org/conference/osdi-99/tornado-maximizing-locality-and-concurrency-shared-memory-multiprocessor">OSDI '99 Paper</a></p>
            </div>

            <div class="project">
              <h3>vCloud Director</h3>
              <p>Cloud computing platform developed at VMware, pioneering cloud infrastructure services.</p>
              <p><a href="https://dl.acm.org/doi/abs/10.1145/1899928.1899942">ACM Cloud Computing '10 Paper</a></p>
            </div>

            <p class="publications-note"><em>For a complete list of publications with citation counts, please visit my <a href="http://scholar.google.com/citations?user=96QTY3cAAAAJ&amp;hl=en">Google Scholar Profile</a>.</em></p>
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