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SUMMARY:Mir-BFT: Robust Scaling of Classical BFT - Marko Vukolic\, IBM Res
 earch\, Zurich
DTSTART:20201112T150000Z
DTEND:20201112T160000Z
UID:TALK152233@talks.cam.ac.uk
CONTACT:Srinivasan Keshav
DESCRIPTION:Mir-BFT (or\, simply\, Mir) is a robust Byzantine fault-tolera
 nt (BFT) total order broadcast protocol aimed at maximizing throughput on 
 wide-area networks (WANs)\, targeting deployments in permissioned and Proo
 f-of-Stake permissionless blockchains.\nMir is the first BFT protocol that
  allows a set of leaders to propose request batches independently (i.e.\, 
 parallel leaders)\, in a way that precludes request duplication\, by rotat
 ing the assignment of a partitioned request hash space to leaders. As this
  mechanism removes a single-leader bandwidth bottleneck and exposes a comp
 utation bottleneck related to authenticating clients even on a WAN\, our p
 rotocol further boosts throughput using client signature sharding optimiza
 tion. Our evaluation shows that Mir convincingly outperforms state-of-the-
 art and orders more than 60000 signed Bitcoin-sized (500-byte) transaction
 s per second on a widely distributed 100 nodes\, 1 Gbps WAN setup\, with t
 ypical latencies of few seconds. We also evaluate Mir under different faul
 ts\, demonstrating its performance robustness.\n\nMir relies on classical 
 BFT protocol constructs\, which simplifies reasoning about Mir correctness
 . Specifically\, Mir is a generalization of the celebrated and scrutinized
  PBFT protocol. In a nutshell\, Mir follows PBFT “safety-wise”\, with 
 changes needed to accommodate novel features restricted to PBFT liveness.\
 n\n \nBio:\n\nMarko Vukolic joined IBM Research in January 2015 as a Resea
 rch Staff Member and earlier was a Post-Doc and Intern in IBM. Before that
 \, he was a faculty in EURECOM\, and a visiting professor at Systems Group
  @ ETH Zurich. He obtained a Doctor of Science (PhD) degree in Distributed
  Systems from EPFL in the Distributed Programming Laboratory (LPD) in 2008
  and an engineering degree in Communication Systems from University of Bel
 grade in 2001. His research interests lie in the broad area of distributed
  systems\, more specifically fault-tolerance\, blockchain and distributed 
 ledgers\, cloud computing security and distributed storage.\n 
LOCATION:https://meet.google.com/ehj-dwaz-rea
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