The CAOS group at CMU bridges computer architecture and operating systems
and rethinks their synergy for performance, security, and scalability
Computing systems are undergoing a radical shift, propelled by stern security requirements and an unprecedented growth in data and users. This change has proven to be abstraction breaking. Current hardware and operating system abstractions and interfaces were built at a time when we had minimal security threats, scarce compute and memory resources, and limited numbers of users. These assumptions are not representative of today's computing landscape. On one hand, modern virtualization technologies have enabled the new cloud paradigms of serverless computing and microservices, which have in turn lead to the sharing of computing resources among hundreds of users. On the other hand, attacks such as Spectre and Meltdown have shown that current hardware is plagued by critical vulnerabilities. In this new era of computing, it is urgent that we rethink the synergy between the OS and hardware layers from scratch. Our research at CAOS bridges computer architecture and operating systems focusing on performance, security, and scalability. Our current work follows two central themes: (a) re-designing abstractions and interfaces between the two layers to improve performance and scalability, and (b) uncovering security vulnerabilities and building defenses at the boundary between hardware and OS.
Recent News
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2022
TMO won the best paper award at ASPLOS!
Learn more about our work on transparent memory offloading in datacenters.
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2021
Three papers, IOCost, TMO, and Nested ECPTs, accepted to ASPLOS 2022!
Learn more about our work on:
• Block IO control for containers in datacenters.
• Transparent memory offloading in datacenters.
• Parallel virtualized memory translation. -
2021
Dimitrios selected as a Meta Academic of the Month!
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2021
Dimitrios received a Meta Faculty Award!
For his work on architectural and operating system support for lightweight virtualization.
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2021
Dimitrios received the David J. Kuck Outstanding Ph.D. Thesis Award!
Awarded to a single outstanding doctoral thesis from the computer science department at UIUC each year.
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2021
RAS accepted at SOSP 2021!
Learn more about our work on continuously optimized region-wide datacenter resource allocation.
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2021
Dimitrios received the ACM SIGARCH & IEEE CS TCCA Outstanding Dissertation Award!
For "contributions to redesigning the abstractions and interfaces that connect hardware and operating systems".
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2021
NVOverlay accepted at ISCA 2021!
Learn more about our work on efficient and scalable high-frequency snapshotting to NVM.
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2021
Kaiyang and Ziqi join the CAOS group!
Welcome!
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2021
BabelFish selected as a IEEE MICRO Top Picks!
Learn more about our work on fusing address translations for containers.
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2021
Elastic Cuckoo Page Tables selected as a a MICRO Top Picks Honarable Mention!
Learn more about our work on rethinking virtual memory translation for parallelism.
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2021
The upstreamed Draco is featured in Linux Security at Phoronix!
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2021
Jamais Vu accepted at ASPLOS 2021!
Learn more about our work on thwarting microarchitectural replay attacks.
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2021
Draco has been upstreamed in the Linux Kernel!
Learn more about our work on architectural and operating system support for system call security.
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2021
CAOS Group Established!
And so it begins...
