Agenda for meeting 21/09/16

Decide on meeting leader and meeting note taker
- CNR
NumFOCUS updates
- now on webpage - publicise to world
- meeting in Washington (next year?)
Advisory Board
- governance docs: need to appoint - discuss offline (slack)
Docker/container status
- GNW good work so far
- May cut down on number: JSH remove dev-env-debug
Test system updates, including Pipelines
- MSA: regression tests in ffc
- GNW: pipelines might be future for lighter components
- JSH: testing for 'FEniCS-related' projects?
Documentation transition
- Old pages still there. Need to remove.
- AL keen to move to a Content Management System (CMS) (e.g. Wordpress)
- JSH would prefer git-based approach
- GNW - website down to one page!!!
- CNR - doxygen fixup for C++ documentation for API with JSH - by 2017 release
- GNW - updating demos to use .rst - JSH how to include datafiles - just duplicate
- All to look at git LFS extension. JSH add to docker.
- GNW - workflow documentation? "contributing" - on website. Needs shortening/split -> RTD.
Conda packaging
- GNW useful for online notebooks
- MER - Ask MinRK or NumFOCUS?
Release 2016.2
- Aim to fix up documentation in Nov/Dec and release 2016.2 if in good order
- Encode in UFL, ffc options. Python dict.
- December? Will be 2017.1
Installation developments and PyPi/pip install, make UFC a sub-module of FFC
- ownership of FIAT on PyPi?
- Move UFC and UFLACS both inside ffc
Round of updates from all
- nothing to add
FEniCS '17 in Luxembourg
- JSH - aiming for 12-14 June, depending on conference centre availability
- How to run through NumFOCUS? Membership fee?
- GNW - dates close to exam period... check with IC people.
- JSH back on 3 Oct.

Agenda for meeting 20/05/16

Open "slack" team - difficulty of dividing discussions effectively between slack and mailing lists - mailing lists archived, slack may not be - could get non-profit slack - ACTION: create public slack team - try it and see how it works... "fenicsproject.slack.com" created by Marie - Move future meeting agendas to slack
FEniCS 1.7/2016.1 release - AL to make changes to change release to "2016.1" and then release as soon as possible - Johannes to make release - upload new releases of python packakes to pypi for pip
FEniCS Foundation/NumFOCUS - GNW/CNR to check out UK accountant and get details of Quantum Espresso Foundation - Look at NumFocus to become an umbrella - Marie to pass video round... Ridg to talk to Andy Terrel. - Consider membership costs
Testing infrastructure - JR/CNR to discuss bamboo - AL to get DNS name
Merging repositories - Somebody to merge dijitso into ffc
Hosting - keep status quo
Documentation - continue moving things to readthedocs - taking down old documentation - check through the website for old docs - moving contributors' information to readthedocs: workflow, running tests etc. - new webpage : big red blob. - sprint on documentation/webpage - fix a date? doodle poll? July? CNR - workshop pages on website - list of companies/groups using FEniCS
Feature focus and plans for 2016-2017 - BoundaryMesh cleanup CNR
FEniCS'17 - Luxembourg

Agenda for meeting 15/04/16 - 10 PM UK / 11 PM Europe

Release

Notes for meeting 17/03/16 - 2PM UK / 3PM Europe

Release 1.7.0
- feature freeze date: focus on bug fixing
- waiting for petsc release within next forthnight
- Anders will change 1.7.0 -> 2016.0
- Aim for april 18th
FEniCS'16
- items to put on agenda for developer focus after meeting -- make wiki page and add points
- Martin will send reminder email for abstract submission deadline
Installation: scripts, brew, apt, docker, Linux/OSX/Windows etc
- Anders is trying docker and liking it so far
- would be nice with an easy to use ipython notebook server docker image
- docker is fairly technical to use, perhaps some documented workflows would help
- issues with 3d graphics
Install documentation
- Anders has updated download page a bit
- Jack and Garth are updating readthedocs pages
Tutorials planned
- Marie in Southhampton in June
- Martin at Simula in April
- Considering using Jupyter Hub
Documentation
- status update from Massimiliano
- one key concern is to keep the amount of homemade scripts small and easy maintainable
- much better API doc both for c++ and Python interface to dolfin crucial!
- consider sphinx domains http://www.sphinx-doc.org/en/stable/domains.html
- consider https://breathe.readthedocs.org/en/latest/
Linear algebra changes
- mpi communicator issues with linear algebra factories need to be sorted out
Test systems
- Garth finds that bamboo branch testing results in nice workflows
- Johannes has been testing bamboo some, licence expired now
- Wanted feature: Downloading image with failed tests for easy reproduction
- Need solutions to dependencies between projects and project branches
JIT status
- Probably not a lot of work left
Status of FEniCS Applications (http://fenicsproject.org/applications/)
- Some projects are dead, some links are dead: not good advertising
- "Featured stories" pages are possibly a replacement

Agenda for next meeting 15/01/16 - 10AM UK / 11AM Europe

Round of updates
Follow-up from previous meeting
FEniCS'16 planning
Release planning for 1.7 or 2.0
- Rename to 16.0 : who is going to make the changes needed in the code/documentation?
- Aim for release at Easter time
Slack / hipchat
- GNW to add everyone
Bamboo
FEniCS Foundation...
- numfocus? GNW/CR have options in UK. AL to ask Tom where he's at.

Agenda for next meeting 9/11/15 - 9AM UK / 10AM Europe

Round of updates
- Consider google groups or other services for email list
Follow-up from previous meeting
- Software Sustainability institute is not interested.
Organisation of repositories
- Martin will register issues for removing swig dependency of ffc
Moving documentation to read-the-docs
- Swig dependencies of ffc cause trouble. Look into solutions to get rid of swig in ffc.
Test system updates
Release notes status 1.5, 1.6, 1.7
Release planning for 1.7
Dates for FEniCS'2016 (May 18-20 suggested)
- No conclusion, exam season in the UK, is May not ok?
Martin: adding ffc -> uflacs dependency for code generation utilities.
- Short term ok, longer term aim to include uflacs into ffc instead.

Agenda/Notes for developer meeting 9/10/15 - 10AM UK / 11AM Europe

Points from previous meeting
FEniCS '16
- What? (Format, preferences)
- fewer people? schedule could be less tight. Shorter presentations OK
- everyone invited, no keynote
- posters if people want to
- social session / hackathon
- When? (Scheduling)
- possibly May. fix a date. Marie or Martin to follow up.
Software Sustainability Institute - mention - CNR
- www.software.ac.uk open call
Release Notes status 1.6 - JB
- JB started in repo - everyone to go through 1.6 paper and pick out their parts
- After 1.5 is done, discuss with editors for 1.6/1.7... 2.0 etc. AL
- not for every release GNW
- discussed DOI zenodo/eu data - which to use? maybe good for release notes
- should release notes and release software be combined for DOI?
- GNW to work on 1.5 today
Website - tutorials/featured articles - MEG/MSA
- money at simula for student to update tutorials - AL
- AL has possibly found student to work on it
- GNW integrate tutorial with demos/code for automated testing
- MSA - new postdoc at simula looking at converting ReST to jupyter notebooks
- GNW - structure in demos ordering from easy to hard / cut down number of demos
- Cross-reference demos in different ways
- ReST to convert into code snippets co-ordinate with Simula to make a notebook
Testing framework - evaluate Atlassian Bamboo? - costs $10 if hosted on own hardware...
- allows testing on branches and uses docker
- time for JIT long and uses cache over 1Gb
- MSA - dijitso to reduce time for JIT
Combining repos - GNW
- ask Cambridge student to experiment with git sub-repositories
- UFL for example needs to be got separately, and accept pull-requests etc.
- are sub-repos supported on bitbucket?
- Is it worth merging dolfin and ffc/uflacs anyway?
- Martin working on ufc exclusively for next few weeks
- GNW wants to move functions from dofmap to finite_element
- AL - measures
dijitso - MSA
- fundamental functionality works, but needs more work - prototype - MSA to change some things in ffc first
- smaller/faster? than instant
- could just merge into ffc?
DOLFIN API changes/updates
- MeshGeometry gets "degree" and extra Points for quadratic meshes (CNR/MSA): now in master
- MeshFactory - CNR work in progress
- setting parameters / possibly set parameters before build somehow? CNR to look at again
- MeshView - maybe schedule some time to work on it? Maybe some dates in December
- can we break down problem for students? GNW
- PETSc IndexSets/MatNest - CNR/GNW need to look at.
- dofmap construction behind the scene - JB
- agree to deprecate current way of doing things, maybe with an error message
- fix Python layer - JB to make pull request
- clean-up of integer types - JB
  - local indices -> int
  - global indices -> la_index
  - mesh library should be independent from PETSc - GNW
  - c++11 has defined 64-bit integers - int64_t
  - discussion about name of integer type
  - should use la_index (or rename) for dofmap - JB to look into
XDMF
- Use XDMF xml text format to supercede XML meshes: agreed
FIAT - JB
- create FIAT reference repository
- fiat reference data repo made by GNW
- Firedrake PR is blocker for fixing enriched element
- JB to ask Firedrake team to split up PR?
fenics-web PRs
- merged some, others have problems
pdesoft coding days - AL
- 2016 AL on committee - do we want to participate? - have a FEniCS session?
- nobody sure if they are free. maybe JB.
Adaptivity Workshop.
- MSA to find out
Release 1.7 - aim for December/January - what are reasonable deadlines/expectations?
- identify which bugs/features need to go into the release
Any other exciting developments

Agenda/notes for developer meeting 26/8/15

Feedback from FEniCS'15 meeting - any actions arising
next meeting in Oslo
action Anders/GNW/CNR - look into Charity status for 'foundation'
action Jan to remind Firedrake people about FIAT updates
Release notes status 1.6
action Jan to email all who need to work on this
Featured articles/website appearance.
GNW to talk to Josh about mobile-friendly/rotating images.
FIAT/FInat/ffc/ufl/ufc direction of travel.
uflacs now supports Piola mappings
Martin editing ufl - renaming various functions so dolfin.Mesh inherits from ufl.Mesh etc.
wait and see about Finat.
ufc function evaluation slow - too many callbacks. Straighten out by making more DOLFIN specific.
Iterative changes OK.
Quad/hex/parametric support updates
GNW could work on W/B e.g. 14th or 21st. CNR to email round date.
GNW to make a circular mesh class
MeshView
Chris to remove direct access to MeshGeometry in DOLFIN
Martin to continue changes on ufl side.
aim to schedule something for late autumn
XDMF
no progress at present. Hope to hear from Kitware soon.
Online tools - jupyter sagemathcloud etc...
CNR to submit issue to sagemathcloud
Schedule for autumn/winter - next release
aim for 1.7 in December

TODO: - deprecate UnitCubeMesh etc. Chris - tutorial on webpage needs updating/removing/structure. Garth. - transition documentation to ReadTheDocs? Quang? e.g. start with UFL - ipython visualisation to be included (Martin)

Summary of developer meeting 4/6/15

Roll over issues to 1.7 tomorrow
Release notes for 1.6 - should be done soon after release
Release Paper - Anders to ask editors about 1.6 - need to publish changes somewhere
Put paper on arxiv? Deal.ii blocked - better not to use arXiv. Version numbering paper - every 0.5.
discuss release frequency/numbering/paper at F'15
Anders to have editorial discussion about a "Release notes" section in Arch. Num. Soft.
Update featured articles on website - everyone to contribute one article? Marie to chase up people.
Garth to get student Josh to look at website
FIAT and ffc changes for Firedrake should be merged? Discuss at FEniCS'15
FIAT regression tests should be fixed - testing in general needs attention
FINAT? Relation to FIAT. FINAT may take over everything.
Marie to discuss at '15
Quads and hexes to be merged (Chris)
MPI Abort (Jan) not working with Ubuntu MPI - merge pull request after release
uflacs may not be ready for 1.6 release - Martin?
"Code sprint" on parametric geometry - Mon 15/Tues 16
MeshView - Chris & Garth to look at this afternoon
Aim to finalise release for 15 June? Email mailing list...

Agenda for developer meeting 2/6 2015

Call for new featured articles on the web page [MER]
Merging FEniCS and Firedrake codebase [Jan]

Summary of developer meeting 11/5 2015

Release of 1.6
- June 1: Deadline for assigning issues (to ourselves). Chris rolls over unassigned enhancements issues to 1.7.
- June 15: Freeze and deadline for fixing issues
A round of status updates
- Chris: Working on quads, hexes, interpolation in parallel
- Jan: Working on deadlocks in parallel; problems with debugging on buildbot; Anders will ask Johannes to give Jan access to buildbot for debugging; enriched elements (in discussion with Marie)
- Martin: Busy with proposal writing; working on getting UFLACS ready for 1.6 release, almost in place
- Marie: Working on merging pull requests, in particular regarding Regge elements; trace elements; FIAT/FFC pull requests
- Anders: Working on multimesh stuff
- Garth: Traveling
Review of last meeting / things still not being worked on / misc
- Parametrized geometries (quadratic elements and so on)
- MeshView
- Martin will give FEniCS course in Lund 9-10
- Marie will FEniCS course in Southampton 22-23, might consider iPython notebooks
UFC conventions for hex/quad cells
- Follow p4est and deal.II conventions
- Where do we document this? Also relevant question for triangles and tets. Currently in UFC manual but that is outdated and hard to find
Code documentation
- Can we use some new tools? Read the docs? Other tools? Has Sphinx improved so we don't need to manually extract C++ docstrings. AL creates issue for this
- Related issue: consider using external buildbot services, Cdash and others, jenkins? AL creates issue for this
Eval in parallel
- Important issue and needs to be discussed further
- What do we return when a point is outside? A pair with a boolean flag?
Possibility of code sprint day on parameterized geometry?
- August is a possible date
1.5 release notes paper
- Postponed
Other (AL)
- Postponed

Summary of developer meeting 13/4 2015

There will be a small uflacs workshop on 20-21/4 at Simula with members of the Firedrake and DUNE teams
Implementation of dual basis for enriched elements
Explanation of trace elements needs improvement.
To improve on dual basis for enriched element issue and other issues, adding more information to ufc::finite_element would be useful. E.g. "element traits" such as "bool ufc::finite_element::is_enriched()".
Discussion on MeshView/MeshSet:
Seems like a good idea to let the assembler, dofmap, function space build on MeshSet instead of Mesh.
Discussion on parameterized geometry:
Martin has sketched some more on the high level UFL side
Garth will throw together a demo for playing around with parameterized geometry design in dolfin
Discussion on block preconditioning:
Do we need separate assembly of blocks?
New meeting in May, tentatively 11th at 1400 Oslo time, 1300 UK time.

Summary of developer meeting 26/2 2015

Discussion about issue tracker usage:
Keeping it clean requires continuous active efforts by everyone
Starting a wiki page to collect high-level technical planning
Features we're planning, to be detailed on new wiki:
MeshView and function spaces on MeshView (Garth will elaborate on wiki)
MultiMesh UFL integration (August, Anders, and Martin will meet about this)
Parameterized geometries (Martin will elaborate on wiki)
MeshHierarchy (Chris will elaborate on wiki)
Timer subsystem improvement (Chris and Jan takes a shot at this)
Block preconditioning (Garth and Chris are doing a new project on this. Martin can contribute with generating code for element matrix blocks if needed.)
iPython notebook graphics (good summer intern topic?)
Considering use of Cython in place of SWIG directors and JIT. (good summer intern topic?)
Future directions - Quads, NURBS, other future topics should be added to wiki for discussion.
Release schedule discussion:
Aim for 1.6 before FEniCS'15.
Aim for 2.0 around end of 2015.
Discussion about using version number scheme year.iterate (i.e. 16.0, 16.1) starting 2016. Not concluded.
Release schedule loosely twice yearly, June and January, seems suitable for everyone.

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