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Eth 2.0 Dev Update #44 — “More Optimizations”

Eth 2.0 Dev Update #44 — “More Optimizations”

Our biweekly updates written by the entire Prysmatic Labs team on the Ethereum Serenity roadmap.

🆕 New Teammate

We are happy to announce after receiving a very talented batch of applicants, we have hired our new full-time teammate at Prysmatic: Victor Farazdagi!

Victor previously received his master’s degree from Georgia Tech, worked as a lead Golang engineer at Status, and has experience extending the go-ethereum client’s LES and Whisper protocols. We believe his skillset will ramp up the quality of our Prysm client and offer new perspectives to solving challenging problems in the eth2 research space, welcome Victor!

📝 Merged Code, Pull Requests, and Issues BeaconState redesign: partial copy and shared references

The beacon state management is the root of many of our performance bottlenecks since configuring the testnet to run on a mainnet scale. As such, we have been working diligently to find ways to shave off kilobytes of redundantly allocated data to improve sync times, CPU load, and overall memory usage. Go, the programming language Prysm is written in, has no concept of fully immutable data structures. What this means is that two or more copies of an object may reference the same underlying object so when you mindfully mutate a copy of the object, you might be mutating another copy in some unknown routine! The only way around this is to provide a deep copy of data structure, however this becomes expensive with the beacon state as it is copied dozens of times throughout various routines and is relatively large and growing over time. So we have designed a mechanism by which we utilize a hybrid of deep copy, shallow copy, and copy-on-write strategies for sharing beacon states across multiple routines with minimal overhead.

Multiple beacon states can share references to large allocated arrays.

This feature along with the recent full beacon state management rewrite PR ...

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