Research pillar
Serverless cloud systems
Systems for elastic computation and AI inference, built on vHive, our open-source serverless research ecosystem.
Cloud platforms must combine extreme multi-tenancy with strong isolation while preserving performance, cost efficiency, and security. This research direction explores those trade-offs across the distributed hardware/software stack.
Our serverless work is built around vHive, a full-stack open-source framework for representative serverless experimentation, and InVitro, a load generator and trace sampler for studying serverless clusters. Current work covers data-intensive workflows, in-vitro serverless research, lukewarm functions, tail latency, and function snapshots.
Open-source systems
Related publications
Nexus: Transparent I/O Offloading for High-Density Serverless Computing
JooYoung Park, Kevin Nguetchouang, Jovan Stojkovic, Likun Zhang, Riccardo Mancini, Marco Cali, and Dmitrii Ustiugov
arXiv preprint, 2026
@misc{park2026nexustransparentiooffloading, title = {Nexus: Transparent I/O Offloading for High-Density Serverless Computing}, author = {JooYoung Park and Kevin Nguetchouang and Jovan Stojkovic and Likun Zhang and Riccardo Mancini and Marco Cali and Dmitrii Ustiugov}, year = {2026}, eprint = {2604.06682}, archiveprefix = {arXiv}, primaryclass = {cs.DC}, url = {https://arxiv.org/abs/2604.06682} }Melding the Serverless Control Plane with the Conventional Cluster Manager for Speed and Resource Efficiency
Leonid Kondrashov, Lazar Cvetković, Hancheng Wang, Boxi Zhou, and Dmitrii Ustiugov
arXiv preprint, 2025
@misc{kondrashov2025pulsenet, title = {Melding the Serverless Control Plane with the Conventional Cluster Manager for Speed and Resource Efficiency}, author = {Leonid Kondrashov and Lazar Cvetković and Hancheng Wang and Boxi Zhou and Dmitrii Ustiugov}, year = {2025} }Shattering the Ephemeral Storage Cost Barrier for Data-Intensive Serverless Workflows
Shyam Jesalpura, Dmitrii Ustiugov, Michal Baczun, Mert Bora Alper, Rustem Feyzkhanov, Edouard Bugnion, Marios Kogias, and Boris Grot
SESAME, 2025
@inproceedings{jesalpura2025shattering, title = {Shattering the Ephemeral Storage Cost Barrier for Data-Intensive Serverless Workflows}, author = {Jesalpura, Shyam and Ustiugov, Dmitrii and Baczun, Michal and Alper, Mert Bora and Feyzkhanov, Rustem and Bugnion, Edouard and Kogias, Marios and Grot, Boris}, booktitle = {SESAME}, year = {2025} }ServerlessLLM: Locality-Enhanced Serverless Inference for Large Language Models
Yao Fu, Leyang Xue, Yeqi Huang, Andrei-Octavian Brabete, Dmitrii Ustiugov, Yuvraj Patel, and Long Mai
USENIX Symposium on Operating Systems Design and Implementation (OSDI), 2024
@inproceedings{fu2024serverlessllm, title = {{ServerlessLLM}: Locality-Enhanced Serverless Inference for Large Language Models}, author = {Fu, Yao and Xue, Leyang and Huang, Yeqi and Brabete, Andrei-Octavian and Ustiugov, Dmitrii and Patel, Yuvraj and Mai, Long}, booktitle = {USENIX Symposium on Operating Systems Design and Implementation (OSDI)}, year = {2024} }Enabling In-Vitro Serverless Systems Research
Dmitrii Ustiugov, Dohyun Park, Lazar Cvetković, Mihajlo Djokic, Hongyu Hè, Boris Grot, and Ana Klimovic
Workshop on Resource Disaggregation and Serverless (WORDS) at SOSP, 2023
@inproceedings{ustiugov2023invitro, title = {Enabling In-Vitro Serverless Systems Research}, author = {Ustiugov, Dmitrii and Park, Dohyun and Cvetković, Lazar and Djokic, Mihajlo and Hè, Hongyu and Grot, Boris and Klimovic, Ana}, booktitle = {Workshop on Resource Disaggregation and Serverless (WORDS) at SOSP}, year = {2023} }Lukewarm Serverless Functions: Characterization and Optimization
David Schall, Artemiy Margaritov, Dmitrii Ustiugov, Andreas Sandberg, and Boris Grot
International Symposium on Computer Architecture (ISCA), 2022
IEEE Micro Top Picks Honorable Mention 2023
@inproceedings{schall2022lukewarm, title = {Lukewarm Serverless Functions: Characterization and Optimization}, author = {Schall, David and Margaritov, Artemiy and Ustiugov, Dmitrii and Sandberg, Andreas and Grot, Boris}, booktitle = {International Symposium on Computer Architecture (ISCA)}, year = {2022} }Analyzing Tail Latency in Serverless Clouds with STeLLAR
Dmitrii Ustiugov, Theodor Amariucai, and Boris Grot
IEEE International Symposium on Workload Characterization (IISWC), 2021
@inproceedings{ustiugov2021stellar, title = {Analyzing Tail Latency in Serverless Clouds with {STeLLAR}}, author = {Ustiugov, Dmitrii and Amariucai, Theodor and Grot, Boris}, booktitle = {IEEE International Symposium on Workload Characterization (IISWC)}, year = {2021} }Benchmarking, Analysis, and Optimization of Serverless Function Snapshots
Dmitrii Ustiugov, Plamen Petrov, Marios Kogias, Edouard Bugnion, and Boris Grot
International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS), 2021
ASPLOS 2021 Distinguished Artifact Award
@inproceedings{ustiugov2021snapshots, title = {Benchmarking, Analysis, and Optimization of Serverless Function Snapshots}, author = {Ustiugov, Dmitrii and Petrov, Plamen and Kogias, Marios and Bugnion, Edouard and Grot, Boris}, booktitle = {International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS)}, year = {2021} }