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Weekly Summary – February 24, 2025

· 2 min read
William Wolff
William Wolff
Architect

High-level summary​

This week in Leios development, the team focused on simulation analysis and formal methods. Key accomplishments include detailed analyses of both Haskell and Rust simulations, initial work on a protocol dashboard, and advancements in formal methods through trace verification in Agda.

Cross-simulation analysis​

  • Completed a comprehensive analysis of simulations at tag leios-2025w09:
    • Refactored the ELT workflow to improve simulation data processing
    • Modified the Rust simulator to generate fixed-size input blocks (IBs) for comparison with Haskell
    • Partially resolved discrepancies in congestion metrics between simulators
    • Developed detailed analyses of:
      • IB generation to receipt elapsed time
      • Time-in-flight over node-to-node links
    • Identified the dual role of network bandwidth and CPU bottlenecks in high throughput congestion.

Protocol dashboard initiative​

  • Initiated the design of an interactive protocol dashboard with planned features:
    • Protocol parameter configuration
    • Stake distribution settings
    • Performance visualization:
      • Block arrival efficiency
      • Transaction duplication
      • Leios operation rewards
      • Resource utilization
    • Security metrics visualization:
      • Quorum failure analysis
      • Certificate forgery detection
      • Adversarial block tracking.

Rust simulation​

  • Enhanced parallel message handling capabilities:
    • Implemented parallel mini-protocol message transmission
    • Added even bandwidth distribution between mini-protocols
    • Introduced the simulate-transactions configuration option
    • Updated simulation output for better Haskell compatibility
    • Improved block visualization for scenarios with high IB counts.

Formal methods​

  • Commenced trace verifier development in Agda:
    • Added decidability to Short Leios protocol relational specification
    • Implemented a proof-by-computation approach for execution traces
    • Applied the successful methodology from Streamlet formalization.