Ankit Bhardwaj's Homepage

[ Sept 2023 ] Started postdoc position at MIT CSAIL.
[ June 2023 ] Successfully defended my PhD dissertation.
[ May 2022 ] Started internship at Microsoft Research, hosted by Amar Phanishayee.
[ May 2022 ] PAX paper is accepted to appear at HotStorage '22.
[ Feb 2022 ] Named 2022 Meta PhD Research Fellowship finalist.
[ May 2021 ] Started internship at VMware Research, hosted by Irina Calciu and Gerd Zellweger.
[ March 2021 ] NrOS paper is accepted to appear at OSDI '21.
[ May 2020 ] Started internship at VMware Research Group, hosted by Gerd Zellweger.
[ May 2020 ] Sandstorm paper is accepted to appear at HotCloud '20.
[ Apr 2020 ] ASFP paper is accepted to appear at ATC '20.
[ Aug 2018 ] Joined the School of Computing, University of Utah as a PhD student.
[ Apr 2018 ] Received an offer to join the University of Massachusetts, Amherst as a graduate student.
[ Jan 2018 ] Received an offer to join the University of Utah as a graduate student.
[ Sep 2017 ] Attended APSys 2017 and presented our work.
[ July 2017 ] My first paper got accepted in APSys 2017.

Cache-Coherent Accelerators for Persistent Memory Crash Consistency
Ankit Bhardwaj, Todd Thornley, Vinita Pawar, Reto Achermann, Gerd Zellweger, Ryan Stutsman
14^th ACM Workshop on Hot Topics in Storage and File Systems (HotStorage '22)
Best Paper Award
[ Paper ] [ Slides ] [ Talk ]

NrOS: Effective Replication and Sharing in an Operating System
Ankit Bhardwaj, Chinmay Kulkarni, Reto Achermann, Irina Calciu, Sanidhya Kashyap, Ryan Stutsman, Amy Tai, and Gerd Zellweger
15^th USENIX Symposium on Operating Systems Design and Implementation (OSDI '21)
[ Paper ] [ Talk ] [ Webpage ] Star

Adaptive Placement for In-memory Storage Functions
Ankit Bhardwaj, Chinmay Kulkarni, and Ryan Stutsman
2020 USENIX Annual Technical Conference (ATC '20)
[ Paper ] [ Talk ] Star

On the Impact of Isolation Costs on Locality-aware Cloud Scheduling
Ankit Bhardwaj, Meghana Gupta, and Ryan Stutsman
12^th USENIX Workshop on Hot Topics in Cloud Computing (HotCloud '20)
[ Paper ] [ Talk ]

A Preliminary Performance Model for Optimizing Software Packet Processing Pipelines
Ankit Bhardwaj, Atul Shree, Bhargav Reddy V, and Sorav Bansal
8^th ACM SIGOPS Asia-Pacific Workshop on Systems (APSys '17)
[ Paper ] [ Poster ] [ Slides ] [ Talk ] [ Full Paper (unpublished) ]

I am broadly interested in Distributed Systems, Operating Systems, and Cloud Computing.

Bespin - is a new operating system written from scratch in Rust with the goal to explore the kernel replication on each NUMA node and sharing the replica among cores such that it can scale for a multi-socket machine. It uses operation logging to synchonize the replicated kernel across sockets.
Splinter - is a multi-tenant in-memory key-value store that allows pushing storage functions at runtime. Traditional techniques to provide isolation among tenants are too costly and can't be used for a μs-scale system. So, our group is looking for novel ways to solve the problem.
Bacus - At IIT Delhi, my research focus was on compiler-based optimizations for software-based packet processing. We worked on optimizing the compilers so that DSLs(like P4) can be used more effectively. I was a part of Vertecs Paper Reading group; details can be found here.
vLAB - At IIT Bombay, I worked on vLab: Managing and Provisioning VMs for Labs, where the aim was to run a large number of virtual machines on commodity hardware. I designed and implemented the system from scratch, and also analyzed the impact of various parameters on VM boot time when images were stored on distributed object store setup over a cluster of commodity machines.

Fall 2020, Distributed Systems, University of Utah
Spring 2020, Operating System, University of Utah
Spring 2015, Operating System Lab, IIT Bombay
Fall 2014, Implementation Techniques for Relational Database Systems, IIT Bombay
Fall 2013 and Spring 2014, Computer Programming and Utilization, IIT Bombay