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Monday, April 26 • 16:00 - 21:00
[LADIS] 12th Workshop on Large-Scale Distributed Systems and Middleware

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Slack: #workshop-ladis
YouTube: TBD
PC Chairs: Idit Keidar (Technion), Peter Pietzuch (Imperial)
General Chairs: Gregory Chockler (University of Surrey), Ymir Vigfusson (Emory University)

Schedule (all times are in British Summer Time). Full program here.

16:00 – 16:50 Session 1: Blockchain scalability
  • Yossi Gilad (HUJI): Scaling Byzantine Agreements for Cryptocurrencies.
  • Emin Gün Sirer (Cornell/Ava Labs): The Avalanche network and the Internet of Finance being built upon it.
  • Dahlia Malkhi (Diem Association and Novi Financial): Twins -- Production BFT Systems Made Robust .
16:50 – 17:00 Break
17:00 – 17:50 Joint keynote with PaPoC
  • Peter Alvaro (USC): What not where: Sharing in a world of distributed, persistent memory
17:50 – 18:00 Break
18:00 – 19:15 Session 2: Large-scale ML & graph processing
  • Marco Canini (KAUST): Accelerated Deep Learning via Efficient, Compressed and Managed Communication.
  • Keval Vora (SFU): Efficient Large-Scale Graph Analytics
  • Matteo Interlandi (Microsoft): Using Tensor Computations for Traditional Machine Learning Prediction Serving and Beyond.
  • Alexey Tumanov (GaTech): Unified Distributed Dataflow in Ray.
19:15 – 19:45 Open discussions/hallroom conversations/break
19:45 – 20:45 Session 3: Scalable and consistent data processing and storage
  • Natacha Crooks (UC Berkeley): Oblivious Transactions In the Cloud.
  • Mahesh Balakrishnan (Facebook): Virtual Consensus in the Delos Storage System.
  • Kyle Kingsbury (Jepsen): Everything Is Broken.
20:45 – 21:00 Closing

Further details:

"Scaling Byzantine Agreements for Cryptocurrencies."
Algorand is a new cryptocurrency that confirms over a thousand transactions per second with a latency of a few seconds. It ensures that users never have divergent views of confirmed transactions, even if some of the users are malicious and the network is temporarily partitioned. Algorand uses a new Byzantine Agreement (BA) protocol to reach consensus among millions of participants on the next set of transactions. To scale the consensus to many participants, Algorand uses a novel mechanism based on Verifiable Random Functions that allows users to privately check whether they are selected to participate in the BA to agree on the next set of transactions, and to include proof of their selection in their network messages. In Algorand’s BA protocol, participants do not keep any private state except for their private keys, which allows Algorand to replace participants immediately after they send a message. This mitigates targeted attacks on chosen participants after their identity is revealed.

Yossi Gilad is a Harry & Abe Sherman Senior Lecturer at the Hebrew University of Jerusalem. His research focuses on designing, building, and analyzing secure and scalable protocols and networked systems. Prior to the Hebrew University, he was a postdoc researcher at MIT and Boston University.

"The Avalanche network and the Internet of Finance being built upon it"
Before Ethereum, many would have scoffed at the very notion of decentralized finance. Now, it's one of the most hyped areas of fintech. Ava Labs is building upon that momentum with a breakthrough in consensus protocols – Avalanche – to usher in a new era of finance defined by velocity, efficient use of capital, security
against bad actors, and preservation of network value. This talk will focus on the Avalanche network and the Internet of Finance being built upon it.

Emin Gün Sirer is Co-founder and CEO at Ava Labs and a Professor of Computer Science at Cornell University, where his research focuses on operating systems, networking, and distributed systems. He is well-known for having implemented the first currency that used Proof-of-Work (PoW) to mint coins, as well as his research on selfish mining, characterizing the scale and centralization of existing cryptocurrencies, and having proposed the leading protocols for on-chain and off-chain scaling. He is the Co-Director of the Initiative for Cryptocurrencies and Smart Contracts (IC3), which aims to move blockchain-based applications from whiteboards and proofs-of-concept to tomorrow’s fast and reliable financial systems

"Twins -- Production BFT Systems Made Robust."
Twins is a principled strategy for effectuating Byzantine attack scenarios at scale in Byzantine Fault Tolerant (BFT) systems and examining their behavior.

Dahlia Malkhi is the Chief Technology Officer at Diem Association, Lead Maintainer of the Diem project, and Lead Researcher at Novi. She has applied and foundational research interest in broad aspects of reliability and security of distributed systems. For over two decades, she participated in driving innovation in tech, notably: co-inventor of HotStuff, co-founder and technical co-lead of VMware blockchain, co-inventor of Flexible Paxos, the technology behind Log Device, creator and tech lead of CorfuDB, a database-less database driving VMware’s NSX-T distributed control plane (see Corfu github repo), and co-inventor of the FairPlay project.

Dahlia joined the Diem (Libra) team in June 2019, first as a Lead Reseacher at Novi and later as Chief Technology Officer at the Diem Association. In 2014, after the closing of the Microsoft Research Silicon Valley lab, she co-founded VMware Research and became a Principal Researcher at VMware until June 2019. From 2004-2014, she was a principal researcher at Microsoft Research, Silicon Valley. From 1999-2007, she served as tenured associate professor at the Hebrew University of Jerusalem. From 1995-1999, she was a senior researcher at AT&T Labs, NJ. Dahlia holds Ph.D., M.S. and B.S. in computer science from the Hebrew University of Jerusalem.


avatar for Yossi Gilad

Yossi Gilad

Hebrew University of Jerusalem
avatar for Natacha Crooks

Natacha Crooks

UC Berkeley
avatar for Keval Vora

Keval Vora

Simon Fraser University
avatar for Emin Gün Sirer

Emin Gün Sirer

Cornell University
avatar for Dahlia Malkhi

Dahlia Malkhi

Diem Association and Novi Financial
avatar for Peter Alvaro

Peter Alvaro

UC Santa Cruz

Monday April 26, 2021 16:00 - 21:00 BST
  • Slack Channel #workshop-ladis
  • Volunteers Si Chen, Vishwanath Seshagiri, Yazhuo Zhang, Redha Gouicem, Kostis Kaffes