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X-WR-CALNAME;VALUE=TEXT:Eventi DIAG
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UID:calendar.30669.field_data.0@diag.uniroma1.it
DTSTAMP:20260418T123656Z
CREATED:20260417T113111Z
DESCRIPTION:Smart contracts are a special type of transaction designed for 
 the execution of automated agreements on blockchains. Executing smart cont
 racts is a compute and storage-intensive task\, which currently dominates 
 contemporary blockchain's performance. Given that computers are becoming i
 ncreasingly multicore\, concurrency is an attractive approach to improve p
 rograms' execution runtime\, which has been adopted by several contemporar
 y Blockchains like Solana\, Aptos\, Sui\, Sei\, and Monad.A unique challen
 ge of blockchains is that all replicas (miners or validators) must execute
  all smart contracts in the same logical order to maintain the Replicated 
 State Machine semantics. While non-conflicting transactions can be execute
 d in any actual order\, replicas need to enforce a unique logical order am
 ong all pairs of conflicting transactions. Existing implementations rely o
 n the Block's total ordering to resolve this requirement. Yet\, in this ta
 lk I would show that doing can suffer from suboptimal parallelism\, and ex
 poses the system do a new kind of performance attack. I would also describ
 e how relying on minimal coloring of the conflict graph corresponding to t
 he Block's transactions can provide optimal parallelism. This is based on 
 the combination of theoretical study\, a performance evaluation using a pr
 ototype of such a mechanism\, and analyzing tore than 10% of the most rece
 nt 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:20260421T100000
DTEND;TZID=Europe/Paris:20260421T100000
LAST-MODIFIED:20260417T113831Z
LOCATION:DIAG\, Room B203
SUMMARY:ON PARALLEL EXECUTION OF SMART CONTRACTS IN BLOCKCHAINS - Roy Fried
 man
URL;TYPE=URI:http://diag.uniroma1.it/node/30669
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