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TWG Minutes

Date: 2021-08-11

Attendees:

Fairbrother, Gigg, Guest, Peterson, Rantsiou, Tillet, Vardanyan.

Recap actions from previous meeting:

Create forum category for day-to-day operational discussion

Enabling 2FA

  • Now enabled as mandatory across the organisation.
  • No reported disruption from this change.

Meeting Agenda

6.2 release timeline:

  • Reminder of Milestone dates.
  • Gigg to email TWG mailing list for members who were unable to attend the meeting.

Thoughts on user meeting agenda

  • Last meeting was in 2019.
  • Interest in performing this virtually, especially with recent changes in the project's governance model.
  • Largely being organised in a separate meeting to this.
  • Possibility of a 3rd day developers only workshop was raised, as it's currently only planned as 2 days:

Developer workshop

  • Would developers who have joined the project to put names to faces.
  • Would be nice in-person, but unlikely that restrictions will ease in the short/medium term enough for this to happen.
  • Holding it remotely also means all staff can attend without worrying about travel costs.
  • Would be good to book-end the meeting, either before or after, with a half day meeting?
  • Mainly organisational constraints of having to co-ordinate the meeting.
  • Action: Gigg to email working group with this suggestion.
  • Should focus on active developers, but would be nice to include less involved community members. Timezones will ultimately be the limiting factor.
  • Need to actively think about what content to cover during the workshop, possibly big items e.g. a new fitting engine.

Review roadmap items

6.2 Items

ROI selection tool

  • ISIS Reflectometry tool to select a region of interest and run their reduction live
  • Plot and selection tooling is generic so can be used elsewhere
  • Would be good to meet with ILL to discuss adapting the instrument viewer.
  • Action: Guest to email Vardanyan after 6.2 release to discuss.
  • Hacky prototype exists to demonstrate this functionality

Conda Dependency management

  • Completed for 6.2 release

TOF Powder Diffraction

  • Confirmed working for NOMAD (ORNL)
  • Need to confirm on some other instruments, but likely working.
  • Still pending testing if shorter calibration runs can be used for cross-correlate
  • Also results in sharper peaks across a range of d-spacing.
  • Further testing ongoing.

Experiment API (xapi)

  • Moved to 6.3 due to in-cycle commitments.

6.3 Items

  • Action Gigg: Email reminding people to add 6.3 roadmap items.
  • Action All: Add roadmap items for 6.3 release.

AOB

Discussion on high level overview of switch to Conda

  • Working on packaging using Conda, which will be for the next release.
  • Need to determine how we ship Mantid for users who don't want to install Mantid.
  • Some places where GUI libs (Qt) has crept into Framework targets which need separating.
  • Open cascade is a large dependency, implicitly pulling in VTK and QT
    • No investigation has been made into a replacement yet.
  • Progress will slow due to one developer going on rotation.
    • Will likely have packages ready in Conda for 6.3, but not Conda agnostic deps.
  • Do we need to change our major version number?
    • Unclear if it's user visible and worthy of a version bump.
    • Likely will be a discussion for release "6.4".

Action Items

Gigg

  • Email milestone for 6.2 to TWG list.
  • Email TWG list to update roadmap with 6.3 roadmap items.
  • Email working group for user workshop about the possibility of a developer workshop too.

Guest

  • Email Vardanyan about ROI selection tool after 6.2 release is completed.

All

  • Add roadmap items for 6.3 release.