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2.9419-10.6533 0-2.9419-2.9418-2.9419-7.7115 0-10.6533 2.9418-2.9419 7.7115-2.9419 10.6533 0 2.9419 2.9418 2.9419 7.7115 0 10.6533z" stroke="currentColor" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"></path></svg><span class="DocSearch-Button-Placeholder">Search</span></span><span class="DocSearch-Button-Keys"></span></button></div></div></div><div role="presentation" class="navbar-sidebar__backdrop"></div></nav><div id="__docusaurus_skipToContent_fallback" class="main-wrapper mainWrapper_z2l0"><div class="container"><div class="row"><div class="col col--12"><div class="uni-logos margin-vert--lg"><a href="https://www.uibk.ac.at" target="_blank"><img src="/img/uibk_logo.svg" alt="University of Innsbruck"></a><a href="https://web.unisa.it" target="_blank"><img src="/img/unisa_logo.svg" alt="University of Salerno"></a></div><div class="text--center margin-vert--lg">Celerity research is being carried out at the University of Innsbruck and the University of Salerno.<br>This page provides an overview of selected research publications and talks.</div></div></div><div class="row margin-vert--lg"><div class="col col--6"><h2>Selected Publications</h2><div class="margin-bottom--lg"><h3 class="margin-bottom--none">A High-Level API for End-to-End Data Compression in Multi-GPU Cluster Applications</h3><div>Gabriel Mitterrutzner, Peter Thoman and Philipp Gschwandtner</div><div><strong>International Journal of Parallel Programming, 2026</strong></div><div><span><strong>DOI:</strong> <a href="https://dx.doi.org/10.1007/s10766-026-00818-6" target="_blank">10.1007/s10766-026-00818-6</a></span></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">A Portable Compiler-Runtime Approach for Scalability Prediction</h3><div>Nicolai Stawinoga, Sohan Lal, Biagio Cosenza, Philip Salzmann, Peter Thoman, and Thomas Fahringer</div><div><strong>Future Generation Computer Systems, 2025</strong></div><div><span><strong>DOI:</strong> <a href="https://dx.doi.org/10.1016/j.future.2025.108337" target="_blank">10.1016/j.future.2025.108337</a></span></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">Bridging usability and performance: High-level abstractions for advanced accelerator cluster programming</h3><div>Philip Salzmann, Fabian Knorr, Peter Thoman, Philipp Gschwandtner, and Thomas Fahringer</div><div><strong>Future Generation Computer Systems, 2025</strong></div><div><span><strong>DOI:</strong> <a href="https://dx.doi.org/10.1016/j.future.2025.108222" target="_blank">10.1016/j.future.2025.108222</a></span></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">A High-Level API for Dynamic Load Balancing in Large-Scale Parameter Sweeps</h3><div>Philip Salzmann, Peter Thoman, and Thomas Fahringer</div><div><strong>International Journal of Parallel Programming, 2025</strong></div><div><span><strong>DOI:</strong> <a href="https://dx.doi.org/10.1007/s10766-025-00804-4" target="_blank">10.1007/s10766-025-00804-4</a></span></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">Celerity-RSim: Porting Light Propagation Simulation to Accelerator Cluster

11s Using a High-Level API</h3><div>Peter Thoman, Philipp Gschwandtner, Facundo Molina Heredina, and Thomas Fahringer</div><div><strong>IJPP, 2025</strong></div><div><span><strong>DOI:</strong> <a href="https://dx.doi.org/10.1007/s10766-025-00787-2" target="_blank">10.1007/s10766-025-00787-2</a></span></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">Balancing Tracking Granularity and Parallelism in Many-Task Systems: The Horizons Approach</h3><div>Peter Thoman, Philip Salzmann</div><div><strong>SN Computer Science, 2024</strong></div><div><span><strong>DOI:</strong> <a href="https://dx.doi.org/10.1007/s42979-024-02749-w" target="_blank">10.1007/s42979-024-02749-w</a></span></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">Automatic Discovery of Collective Communication Patterns in Parallelized Task Graphs</h3><div>Fabian Knorr, Philip Salzmann, Peter Thoman, and Thomas Fahringer </div><div><strong>International Journal of Parallel Programming, 2024</strong></div><div><span><strong>DOI:</strong> <a href="https://dx.doi.org/10.1007/s10766-024-00767-y" target="_blank">10.1007/s10766-024-00767-y</a></span></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">Command Horizons: Coalescing Data Dependencies while Maintaining Asynchronicity</h3><div>Peter Thoman, Philip Salzmann</div><div><strong>WAMTA 2023</strong></div><div><span><strong>DOI:</strong> <a href="https://dx.doi.org/10.1007/978-3-031-32316-4_2" target="_blank">10.1007/978-3-031-32316-4_2</a></span></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">An Asynchronous Dataflow-Driven Execution Model For Distributed Accelerator Computing</h3><div>Philip Salzmann, Fabian Knorr, Peter Thoman, Philipp Gschwandtner, Biagio Cosenza, and Thomas Fahringer</div><div><strong>CCGRID 2023</strong></div><div><span><strong>DOI:</strong> <a href="https://dx.doi.org/10.1109/CCGrid57682.2023.00018" target="_blank">10.1109/CCGrid57682.2023.00018</a></span></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">Declarative Data Flow in a Graph-Based Distributed Memory Runtime System</h3><div>Fabian Knorr, Peter Thoman, Thomas Fahringer</div><div><strong>International Journal of Parallel Programming, 2022</strong></div><div><span><strong>DOI:</strong> <a href="https://dx.doi.org/10.1007/s10766-022-00743-4" target="_blank">10.1007/s10766-022-00743-4</a></span></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">The Celerity High-level API: C++20 for Accelerator Clusters</h3><div>Peter Thoman, Florian Tischler, Philip Salzmann, and Thomas Fahringer</div><div><strong>HLPP 2021</strong></div><div></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">Porting Real-World Applications to GPU Clusters: A Celerity and CRONOS Case Study</h3><div>Philipp Gschwandtner, Ralf Kissmann, David Huber, Philip Salzmann, Fabian Knorr, Peter Thoman, and Thomas Fahringer</div><div><strong>eScience 2021</strong></div><div></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">Celerity: High-level C++ for Accelerator Clusters</h3><div>Peter Thoman, Philip Salzmann, Biagio Cosenza, Thomas Fahringer</div><div><strong>Euro-Par 2019</strong></div><div><span><strong>DOI:</strong> <a href="https://dx.doi.org/10.1007/978-3-030-29400-7_21" target="_blank">10.1007/978-3-030-29400-7_21</a></span></div></div></div><div class="col col--6"><h2>Selected Talks &amp; Demos</h2><div class="margin-bottom--lg"><h3 class="margin-bottom--none">Concurrent Scheduling of High-Level Parallel Programs on Multi-GPU Systems</h3><div>Peter Thoman</div><div><strong>HLPP 2026</strong></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">Celerity - SYCL-Based High-Productivity Development at HPC Scale</h3><div>Peter Thoman</div><div><strong>PASC 2025</strong></div><strong><a href="https://zenodo.org/records/15730770" target="_blank">Slides</a></strong></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">A High-Level API for Dynamic Load Balancing in Large-Scale Parameter Sweeps</h3><div>Philip Salzmann</div><div><strong>HLPP 2024</strong></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">SYCL and Celerity: High(-ish) level, vendor-independent C++ for GPU parallelism</h3><div>Peter Thoman</div><div><strong>Guest Lecture, Trento 2023</strong></div><strong><a href="https://www.youtube.com/watch?v=xK_tCN9nm4Q" target="_blank">Video</a></strong></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">Automatic Discovery of Collective Communication Patterns in Parallelized Task Graphs</h3><div>Fabian Knorr</div><div><strong>HLPP 2023</strong></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">SYCL Panel Discussion</h3><div>Peter Thoman</div><div><strong>IWOCL/SYCLcon 2021</strong></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">Celerity — High-Level Distributed Accelerator C++ Programming</h3><div>Philipp Gschwandtner</div><div><strong>

11Talk at AHPC 2020</strong></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">Celerity: High-productivity Programming for Accelerator Clusters</h3><div>Peter Thoman</div><div><strong>Talk at ScalPerf 2019</strong></div></div><div class="margin-bottom--lg"><h3 class="margin-bottom--none">Introducing Celerity: High-level C++ for Accelerator Clusters</h3><div>Philip Salzmann</div><div><strong>Demo session at HPCS 2019</strong></div></div></div></div><hr class="separator"><div class="row margin-vert--xl"><div class="col col--12"><div class="text--center"><h2>Acknowledgements</h2><p>This project has received funding from the<!-- --> <strong>FFG (Austrian Research Promotion Agency)</strong> under grant agreement <strong>FO999903595</strong>.</p><p>This project has received funding from the<!-- --> <strong>European High-Performance Computing Joint Undertaking (JU)</strong> <!-- -->under grant agreement <strong>No 956137</strong>.</p><p>This research has been partially funded by the<!-- --> <strong>FWF (I 3388)</strong> and<!-- --> <strong>DFG (CO 1544/1-1, project number 360291326)</strong> as part of the <strong>CELERITY</strong> project.</p></div></div></div></div></div><footer class="footer"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Docs</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/docs/getting-started/">Getting Started</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/installation/">Installation</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/issues-and-limitations/">Issues &amp; Limitations</a></li></ul></div><div class="col footer__col"><div class="footer__title">Community</div><ul class="footer__items clean-list"><li class="footer__item"><a href="https://discord.gg/k8vWTPB" target="_blank" rel="noopener noreferrer" class="footer__link-item">Celerity Discord</a></li><li class="footer__item"><a href="https://stackoverflow.com/questions/tagged/celerity-hpc" target="_blank" rel="noopener noreferrer" class="footer__link-item">Stack Overflow</a></li></ul></div><div class="col footer__col"><div class="footer__title">More</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/research/">Research</a></li><li class="footer__item"><a class="footer__link-item" href="/contribute/">Contribute</a></li><li class="footer__item"><a href="https://github.com/celerity/celerity-runtime" target="_blank" rel="noopener noreferrer" class="footer__link-item">GitHub</a></li></ul></div></div><div class="footer__bottom text--center"><div class="margin-bottom--sm"><img src="/img/celerity_logo_monochrome.svg" class="footer__logo themedComponent_mlkZ themedComponent--light_NVdE"><img src="/img/celerity_logo_dark_monochrome.svg" class="footer__logo themedComponent_mlkZ themedComponent--dark_xIcU"></div><div class="footer__copyright">Copyright © 2026 Distributed and Parallel Systems Group, University of Innsbruck.<br>SYCL and the SYCL logo are trademarks of the Khronos Group Inc.</div></div></div></footer></div>
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