🎯 Cadence VM (execution environment) goals - Q1 2025

[j1010001]

Previous goal tracker: #6577

Planned

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1. Validate EVM performance benchmark (gas/sec) #6897
   Execution +1
   
2. EVM Gateway hardening - phase 2 flow-evm-gateway#700
   2 of 12
   Feature Feedback +2
   
3. Document versioning mechanics for dynamic protocol state #6887
   Documentation Execution Preserve Protocol +4
   
4. New Trie Research #6558
   Execution +1
   

   
5. https://github.com/onflow/flow-execution-effort-estimation/issues/9
6. Execution Effort Calibration 2. [ExEC2] #5598
   4 of 19
   Epic Execution +2
   
7. Address tech-debt (Q1 2025) #6938
   1 of 4
   Execution +1
   
8. performance deep-dive #6973
   Execution +1
   

Stretch goals

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1. FVM Passkey support #6895
   1 of 1
   +0
2. Speed up reads by adding support for lazy decoding of registers atree#341
   performance +1
   
3. Refactor EN HCU from using version beacon to dynamic protocol state #6788
   1 of 2
   +0
   
4. Create optional map key index to optimize map key iteration 🆕 atree#443
   Execution enhancement +2
   
5. [Storage] Tools to recover pebble from a corrupted state #6628
   Stale Tech Debt +2
6. Determine if we can exclude new and removed registers from touched registers #6959
   Performance +1
   

Unplanned work

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1. https://github.com/onflow/cadence-internal/issues/286
2. migration networks setup #6928
   +0
3. Add features, smoke test, and release Atree v0.9.0 (+8360 lines of code)
4. Leo - Review dapper's NBA topshot solidity contract which will be deployed to Flow EVM

[fxamacker]

I added atree v0.9.0 to unplanned work because it required +8360 lines of code, weeks of testing, and it isn't mentioned in sprint kickoffs or release notes of packages using it (as of Feb 11).

@j1010001 as raised in our Thursday Jan 23 meeting, this was a part of higher priority unplanned work.
From Dec 20 to Jan 22:

• ~30 days (worked on weekends too) for unplanned higher priority work
• ~2 days for my OKRs (New Trie Research, Atree Refactoring)
• 2 days off (postponed approved end-of-year time off, not taken yet as of Feb 11)

Higher priority work in private repos: I examined and reviewed thousands of lines of code in a repo where I'm not a codeowner, debugged+identified+fixed security bug, contributed ~9500 lines of code that got ported to 2 public repos, helped improve integration tests, ran 40+ smoke tests to reduce risk of regressions, etc.

Non-urgent PR reviews for teammates were also affected by this unplanned higher priority work.

[zhangchiqing]

I was asked to review NBA topshot solidity contract which will be deployed to Flow EVM

https://flow-foundation.slack.com/archives/C07HCF7M6UR/p1739294310155879