2026-09-10 Engineering Team

[joecastiglione]

Agenda

• Phase 11 closeout and release readiness: confirm release scope, remaining blockers, and timing; coordinate version/beta status with Product/Community.

ActivitySim

• Final review / merge decisions:
  • #1103 Faster RNG: Jan approved today; address minor comments and confirm performance/memory validation.
  • #1112 Park-and-ride documentation: assign review; include with the upcoming release?
• Low-memory strategy:
  • #1110 Reduce peak memory: assign independent review and full-scale testing.
  • #1106 Automatic adaptive chunking: initial technical assessment and recommendation for Product/Community.
• Resolve owner blockers:
  • #1107 Calibration: estimation-test failures, user documentation, and review readiness.
  • #1083 Shadow-pricing segmentation: Sijia's unit tests and SANDAG validation.
  • #1062 Summarize memory cleanup: David/RSG's test and completion status.
• Guide closeout: #1086 Application and Analysis Guide: resolve review-access issues, confirm SANDAG walkthrough testing, and set final feedback deadline.
• Skim loading: #1108 OMX/Zarr precedence: agree intended behavior and assign ownership.
  • Proposal: ZARR is a convenience cache only and is not to be modified; if both Zarr and OMX inputs exist they are assumed to contain identical content. Zarr is not an agreed industry data transfer standard and lacks widespread vendor support.
• Recently merged: 🥳
  • #1001 Park-and-ride lot choice and capacity
  • #1113 Park-and-ride Sharrow validation fix

PopulationSim

• #219 Stabilization: remaining review/testing items and merge decision; unblock #217 Intermediate geographies.
• #221 Household-weight caps: Amir/Nick testing results and next fixes.

Performance-testing infrastructure

• #1078 Performance-test subarea: Joe Flood's runner/data PR, warning cleanup, and agreed runtime/memory benchmarks.

Coordination

• Modeling Mobility: decide joint submission and technical topics; assign authors ahead of the September 19 deadline.