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Arjun Devraj Email: adevraj [at] cs [dot] cornell [dot] edu I'm a third-year PhD student in Computer Science at Cornell University, where I'm advised by Rachee Singh. My research interests are broadly in systems and networking, with a focus on machine learning systems. Recently, I have been working on improving communication bottlenecks to speed up distributed machine learning workloads. I am also interested in traffic engineering for wide-area networks. In my research, I enjoy combining algorithmic techniques with insights from hardware, such as optical interconnects. My work is supported by the NSF Graduate Research Fellowship. Before graduate school, I spent two years as a software engineer at Meta, where I worked on privacy infrastructure for the ads recommender system. Previously, I received my bachelor's degree in Computer Science, summa cum laude, from Princeton University, where I worked with Jennifer Rexford on network privacy and with Tom Griffiths and Qiong Zhang on computational cognitive science. Email / Google Scholar / LinkedIn / GitHub |
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Publications |
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Accelerating AllReduce with a Persistent Straggler
Arjun Devraj, Eric Ding, Abhishek Vijaya Kumar, Robert Kleinberg, Rachee Singh Preprint [pdf] [code] |
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LUMION: Fast Fault Recovery for ML Jobs Using Programmable Optical Fabrics
Abhishek Vijaya Kumar, Eric Ding, Arjun Devraj, Darius Bunandar, Rachee Singh Preprint [pdf] |
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HEDGE: Mitigating effects of wavelength-specific faults in cloud WANs
Arjun Devraj, Bill Owens, Umesh Krishnaswamy, Ying Zhang, Rachee Singh USENIX NSDI, 2026 |
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The Reality of Chasing Shannon's Limit in Optical Wide-Area Networks
Arjun Devraj, Bill Owens, Rachee Singh ACM Internet Measurement Conference (IMC), 2025 |
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Chip-to-chip photonic connectivity in multi-accelerator servers for ML
Abhishek Vijaya Kumar, Arjun Devraj, Darius Bunandar, Rachee Singh Optical Fiber Communications Conference (OFC), 2025 [pdf] |
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A case for server-scale photonic connectivity
Abhishek Vijaya Kumar, Arjun Devraj, Darius Bunandar, Rachee Singh ACM HotNets, 2024 [pdf] |
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Reconciling categorization and memory via environmental statistics
Arjun Devraj, Thomas L. Griffiths, Qiong Zhang Psychonomic Bulletin & Review, 2024 [pdf] [code] |
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REDACT: Refraction Networking from the Data Center
Arjun Devraj, Liang Wang, Jennifer Rexford ACM SIGCOMM Computer Communication Review (CCR), 2021 [pdf] |
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The Dynamics of Exemplar and Prototype Representations Depend on Environmental Statistics
Arjun Devraj, Qiong Zhang, Thomas L. Griffiths Proceedings of the 43rd Annual Conference of the Cognitive Science Society, 2021 [pdf] |
Talks |
Accelerating AllReduce with a Persistent Straggler
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Mitigating effects of wavelength-specific faults in cloud WANs
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The Cost of Chasing Shannon's Limit in Optical WANs
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Source code adapted from Jon Barron's website. |