## [EVMMAX Implementers Call 2](https://github.com/ethereum/pm/issues/1208) (January 30, 2025)

- **Client Updates:**
- EthereumJS team completed most of the JavaScript arithmetic library.
- Work on vectorized and non-vectorized implementations continues, with comparisons planned.
- **Poseidon Hash Implementation:**
- Initial tests show a 10x efficiency improvement using EVM Max compared to Solidity.
- Future work includes validating gas cost reductions and potential wall clock time improvements.
- **Vectorized vs Non-Vectorized Execution:**
- Ongoing discussion about whether vectorized operations should be the default.
- Need to determine end-user requirements, such as elliptic curves vs. STARKs.
- **SIMD & Hardware Compatibility:**
- AVX2 (256-bit) is widely available, while AVX-512 has limited support.
- Investigating impact on smaller fields where SIMD benefits could be more pronounced.
- **Tooling & Testing Pipeline:**
- A front-end tool is needed for easier implementation testing.
- Options include direct bytecode generation or adding support to Solidity/Ule.
- **Action Items:**
- Confirm EVM Max gas numbers and benchmark wall clock performance.
- Investigate SIMD comparisons using AVX2 with Poseidon hashing.
- Develop a tool for end-to-end testing of EVM Max implementations.
- **Next Steps:**
- Compare Solidity-based Poseidon with EVM Max implementations.
- Refine vectorized and non-vectorized benchmarks to guide further decisions.
- Plan for the next meeting in one month to review progress.
- [Recordings](https://www.youtube.com/live/_154EOcZLu4)