# PREDA Parallel VMs: Parallel EVM Model Implementing Shared Nothing Architecture

Source: https://medium.com/@devteam_48518/crystality-the-parallel-evm-model-implementing-shared-nothing-architecture-8d82fc0a836a
Kiwi News: https://news.kiwistand.com/stories/PREDA-Parallel-VMs-Parallel-EVM-Model-Implementing-Shared-Nothing-Architecture?index=0x6670c14f844130a3c82d5b8154f87e6f9c1a93700366fa615b0194e666fe427166c87f0f
Submitted by wongssh.eth on 2024-06-17 UTC, 3 upvotes, 1 comment

## Summary

Crystality, a parallel EVM, uses a shared-nothing architecture (SNA) and its PREDA programming model to scale blockchain execution, which the article argues avoids the limits of shared-memory parallel EVMs. The article says Crystality shows 10.2X to 21.9X higher TPS than Aptos and Sui, though it points to a deck for the experiment figures. It describes Asynchronous Functional Relay and Programmable Scopes as the mechanisms that let transactions move between independent VMs without conflicts, using a token transfer between Bob's and Alice's balances on separate VMs as its example.

## Comments

**0x881B...41F2**: Looks interesting, want to know more abt its consensus and developer experience.
What could be the best use case of this? think its gonna be revolutionary.