Is Parallel EVM the Solution for Ethereum Scaling?

Ethereum’s scaling difficulty just isn’t a brand new subject of debate within the crypto realm; this pioneering sensible contract blockchain is infamous for top gasoline charges as a result of its restricted throughput during times of excessive exercise.

One of many foremost causes behind the restricted scalability is the sequential nature of Ethereum’s runtime atmosphere, the Ethereum Digital Machine (EVM). To supply some extra context, the EVM is designed to function as a Turing-complete digital machine, enabling the safe execution of sensible contracts on the Ethereum blockchain.

Whereas this runtime atmosphere has been environment friendly and dependable, it processes transactions sequentially. Which means that sensible contract executions on the Ethereum blockchain are processed one after the opposite, therefore taking longer, particularly throughout high-volume exercise.

In the long term, Ethereum customers must bear with longer ready occasions and better gasoline prices, as was the case when CryptoKitties first clogged the Ethereum community in 2017, and extra just lately through the DeFi and NFT market craze of 2021.

Parallel EVM: A New Daybreak for the DApp Ecosystem

Over the previous few years, a number of initiatives have been launched to unravel Ethereum’s scalability problem, together with various Layer 1 chains comparable to Solana and Layer rollups like Arbitrum and Optimism.

Whereas these scalability options have performed a notable function in enhancing the transaction throughput, a extra novel scaling resolution is presently the discuss of the DeFi neighborhood; parallel EVM chains comparable to Sui, Meter, and Nomad are altering the sport by introducing DApp constructing ecosystems that may course of a number of sensible contract transactions concurrently.

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Let’s put it into perspective; in the usual EVM mannequin, if Alice and Bob submit transactions to ship X quantity of an Ethereum native token to completely different addresses, the EVM will course of the transactions in a sequential order relying on which transaction was first initiated. This implies considered one of them must wait longer for his or her sensible contract order to be executed regardless of the transactions being impartial of one another.

Nevertheless, in a parallel EVM mannequin, the 2 transactions could be submitted on the identical time, lowering the ready interval and gasoline price. The analogy is just like that of a multi-core CPU the place every core is ready to course of or execute impartial directions on the identical time, which has considerably elevated the processing energy of modern-day computer systems.

There are two foremost approaches to EVM parallelization: optimistic parallelism and the state entry methodology.

Optimistic parallelism: Because the title suggests, an optimistic parallel EVM mannequin initially assumes that every one transactions are naturally impartial. As soon as the transaction is executed, the mannequin then verifies the belief and rectifies any dependent transactions that may have been executed independently. The caveat with this mannequin is that it may result in a number of battle publish transaction execution, particularly when processing dependent transactions.

State Entry Technique: In contrast to the previous, this strategy proactively types out dependent and impartial transactions. This allows sensible contracts to execute dependent transactions in a sequential format whereas impartial transactions are processed in tandem. On the upside, there are not any retroactive modifications however on the draw back it takes extra sources and time for builders to kind out the transactions proactively.

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Parallel EVM Good Contract Blockchains

Though a brand new resolution to Ethereum’s scaling bottlenecks, some DApp-compatible blockchains are already main the best way. This part will briefly spotlight three foremost Parallel EVM chains which are utilizing this strategy to unravel Ethereum’s scalability limitations.


With a complete worth locked (TVL) of $751 million, the Sui blockchain ecosystem is designed as a Parallel EVM chain, leveraging the state entry methodology. Notably, this sensible contract community additionally options an object-centric information mannequin to boost the readability within the proactive ordering of impartial and dependent transactions. As of writing, there are over 25 DApps constructing on the Sui blockchain ecosystem, most of that are Dexes and yield platforms.


That is one other EVM-compatible chain that has already built-in parallel transaction submission on its mainnet. What additional stands out about Meter’s strategy to Ethereum’s scalability is the undertaking’s upcoming crypto optimized database that may improve I/O efficiency by 3x and cut back disk footprint to ⅓ of the pebbleDB utilized by Ethereum at this time. Different distinguishable options embody Entrance Working/MEV Resistance, multi-asset validation, and better safety and liveliness, due to a mix of PoW and PoS consensus.


In contrast to the Sui blockchain community, Monad leverages the optimistic parallelism methodology and claims to help over 10,000 transactions per second. The undertaking’s co-founder and CEO, Keone Hon, spoke to Blockworks earlier this yr, emphasizing on the significance of utilizing separate threads to allow simultaneous transactions by digital machines such because the EVM, all whereas sustaining a easy UI/UX for DeFi natives.

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“Monad can principally take transaction codecs which are precisely the identical as Ethereum after which, beneath the hood, implement parallelism with none modifications from the consumer perspective.” mentioned Hon.


The DApp ecosystem has grown considerably over the previous 4 years, and it’s clear that mass adoption can not happen till scalability points are resolved. Whereas some DeFi lovers would possibly advocate for migrating to cheaper DApp ecosystems, the fact is that Ethereum stays probably the most outstanding sensible contract blockchain, holding over 50% of the overall worth locked (TVL) in accordance with DeFi Llama.

Due to this fact, it makes extra logical sense to develop scaling options that improve Ethereum’s core functionalities or handle a number of challenges concurrently, comparable to EVM compatibility and parallel transaction processing.

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