[Users] Meeting minutes for 08/27/2026

[Lucas Timotheo Sanches]

Present: Lucas, Peter, Deborah, Jordan, Steve, Max, Zach
Minutes: Lucas

# Status of Issues on Github

- Roland downloaded a new updated version of the Issues, Zach will work based on
  that.
- He plans to start a new transfer today. The bot idea for creating the issues
  remains.
- He improved the header of the port. Bitbucket nuked the old tickets page, so
  we obv. can't link back to it.
- Steve and Zach think that Monday next week we should see a functioning issue
  tracker.
- Deborah makes a point that our webpage still points to the old Bitbucket
  issues page.

# Accumulated updates after release

- CarpetX and AMReX updates: No Roland today.
- McLachlan: Peter is ready to run another test, but ran out of allocation in
  a machine he wanted to run. He's sorting it out with Steve
  (It's an LSU machine)
- Zach gave an update on the Baikal family. He reports that, after doing a lot
  of BBH simulations, he learned that the way he did constraint enforcement in
  Baikal was not optimal. He comments that enforcing the algebraic constraints
  exponentially was bad. Doing the "standard" algebraic enforcement improved
  stability.
  As a follow up, Lucas asked if this historical wisdom of what to do on BSSN
  came from paper or experimentation. Zach mentions that things were done mostly
  empirically, with strong mathematical hints of the proper directions to take.
- Deborah, in another follow up, notes that in changing from BSSNKai to
  McLachlan, she noticed that the MAYA waves code changes the shift condition
  depending on the mass ratios involved. She asks if we have compatible options
  in McLachlan. Peter says we have radially varying eta, but no tracking the
  the small and large BHs when q >> 1 to adjust it accordingly.

# Unanswered questions

- Please fill out the poll for new time
- "Issues configuring SimFactory for PBS cluster (Hubble) - Jobs
(MAKINO Taiki)":
  We've been backing and forthing with Maiko, assisting him in understanding
  simfactory behaviour and getting configuration files for his machine. Steve
  and Bayhan are the candidates to answer that and they are doing so.