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X-WR-CALNAME;VALUE=TEXT:Eventi DIAG
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DTSTART:20251026T030000
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UID:calendar.30071.field_data.0@www.u-gov-ricerca.uniroma1.it
DTSTAMP:20260405T114215Z
CREATED:20260225T204212Z
DESCRIPTION:AbstractSmart contracts are a special type of transaction desig
 ned for the execution of automated agreements on blockchains.Executing sma
 rt contracts is a compute and storage-intensive task\, which currently dom
 inates contemporary blockchain's performance.Given that computers are beco
 ming increasingly multicore\, concurrency is an attractive approach to imp
 rove programs' execution runtime\, which has been adopted by several conte
 mporary Blockchains like Solana\, Aptos\, Sui\, Sei\, and Monad.A unique c
 hallenge of blockchains is that all replicas (miners or validators) must e
 xecute all smart contracts in the same logical order to maintain the Repli
 cated State Machine semantics.While non-conflicting transactions can be ex
 ecuted in any actual order\, replicas need to enforce a unique logical ord
 er among all pairs of conflicting transactions.Existing implementations re
 ly on the Block's total ordering to resolve this requirement.Yet\, in this
  talk I would show that doing can suffer from suboptimal parallelism\, and
  exposes the system do a new kind of performance attack.I would also descr
 ibe how relying on minimal coloring of the conflict graph corresponding to
  the Block's transactions can provide optimal parallelism.This is based on
  the combination of theoretical study\, a performance evaluation using a p
 rototype of such a mechanism\, and analyzing tore than 10% of the most rec
 ent Ethereum blocks and over 1.5M Sui blocks.* This talk is based on joint
  work with Yaron Hay\, Dvir Biton\, Ankit Ravish\, Manaswini Piduguralla\,
  Sathya Peri\, and Eviatar Procaccia
DTSTART;TZID=Europe/Paris:20260302T113000
DTEND;TZID=Europe/Paris:20260302T113000
LAST-MODIFIED:20260226T150447Z
LOCATION:DIAG\, room B203
SUMMARY:On Parallel Execution of Smart Contracts in Blockchains - Roy Fried
 man
URL;TYPE=URI:http://www.u-gov-ricerca.uniroma1.it/node/30071
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