[Difx-users] Git migration meeting {External}

Wed May 25 18:51:10 EDT 2022

Thanks to everyone who joined the meeting today/yesterday.  The minutes can
be found at the end of the agenda document, and the recording of the
meeting can be download (for the next ~month or so) from
https://swinburne.zoom.us/rec/share/dLp0akWnIt15S9-oxZFYsIczS73hFUwNA-G9iZAfRnKubll3D0MN0gm4xUFkBGw3.0pNWsv7oX12mpGhv?startTime=1653480186000
(Passcode: #C5Ayw&5).  Any problems downloading, please let me know.  I
think that link includes audio-only and transcribed audio as well if that
is of interest.

It was really great to get a chance to have a bit of live interaction again
for the first time in a while! And it was clear that both A) there is a lot
of energy to continue to improve the DiFX ecosystem, and B) it's a lot
easier to get that done via live interactions than purely over
email/slack.  The key takeaways from this meeting were that:
1) We need a clear plan of when the incremental development on the DiFX-2.6
and -2.7 branches will cease (and be replaced by -2.8);
2) Making those releases will be greatly aided by an improved test suite;
and
3) The timing of a svn freeze and git start-up should be both clear and
sited at a time at which there is no ongoing changes in the live branches,
and no un-checked in code in trunk.

I think that it would be ideal to coordinate a svn freeze / git startup
with a workshop, whether that is remote, hybrid, or in-person.  So the
questions I have for the community are:
i) when can we realistically aim to test and formally release e.g. 2.6.3
(or 4) and 2.7.1?
ii) will that be at an opportune time for a workshop week?

While we've traditionally held the DiFX workshops in September or October,
I think it should be possible to achieve i) before then, but would that be
at a time that enough people could commit to a workshop?  I have gaps in my
schedule in the last week of July and the latter half of August, but I
realise that these times may conflict with Northern Hemisphere summer
vacations and/or conferences.

Please let me know your thoughts either here or on slack - let's aim to set
a date in the next week or two.

Cheers,
Adam

On Wed, 25 May 2022 at 12:18, Adam Deller <adeller at astro.swin.edu.au> wrote:

> Reminder that this meeting is on in just under 10 hours - agenda at
> https://docs.google.com/document/d/13km6afEVjrYC84mmUDjdz8IT6uVyQz4JQApju56WW9w/edit.
> I have not yet heard whether *Chris*, *Jan*, and *Walter* will be present
> and able to give an update on *DiFX-2.6*, *DiFX-2.7*, and *DiFX-trunk*
> respectively, but we will go ahead with the discussion in any case.
>
> Cheers,
> Adam
>
> On Fri, 13 May 2022 at 09:01, Adam Deller <adeller at astro.swin.edu.au>
> wrote:
>
>> Hi all,
>>
>> Taking silence as assent, I've locked in Wednesday May 25 at 12UT.  The
>> zoom details follow, and I've added them to the agenda page also.
>>
>> Can I ask the following people if they expect to be present and able to
>> give a brief update on the following statuses:
>> Jan: DiFX-2.7 branch, outputbands
>> Chris: DiFX-2.6 branch
>> Walter: Trunk
>> Shaoguang: svn2git translation
>>
>> zoom details:
>>
>> https://swinburne.zoom.us/j/83036442917?pwd=-GRKacb17a5hhnyimFO4qxoFbeDNsJ.1
>> Password: 698655 Join from dial-in phone line: Dial: +61 2 8015 2088
>> Meeting ID: 830 3644 2917 International numbers available:
>> https://swinburne.zoom.us/u/kd7r8BN71C Join from a H.323/SIP room
>> system: Dial:83036442917 at global.zoomcrc.com Meeting ID: 830 3644 2917
>> H323/SIP Password: 698655
>>
>> Cheers,
>> Adam
>>
>>
>>
>> On Tue, 10 May 2022 at 10:23, Adam Deller <adeller at astro.swin.edu.au>
>> wrote:
>>
>>> Hi difx-users and -developers,
>>>
>>> From the responses so far, it sounds like most days that week are
>>> possible, and some people expressed a preference for the meeting to be
>>> slightly earlier (and no-one who responded said this would not be
>>> possible).  So I am going to propose *Wednesday May 25, 12UT*.  If
>>> anyone who had previously responded positively cannot make that time, can
>>> you please let me know within the next day or two?  Otherwise, I will lock
>>> in this time and send around zoom details.  I will record the meeting and
>>> make it available afterwards for anyone who is unable to be there in real
>>> time.
>>>
>>> I've also started an agenda, which is at
>>> https://docs.google.com/document/d/13km6afEVjrYC84mmUDjdz8IT6uVyQz4JQApju56WW9w/edit?usp=sharing.
>>> I've added a few potential speakers - please take that as a
>>> request/suggestion rather than an order! And everyone can deel free to add
>>> agenda items in advance: I will check and contact you if necessary to
>>> ensure that we have an agenda which can be completed in ~60 minutes.  The
>>> goal is to end the meeting with a timeline for both future merges and
>>> releases, and for making the hop from SVN to git.
>>>
>>> Cheers,
>>> Adam
>>>
>>> On Mon, 2 May 2022 at 22:05, Adam Deller via Difx-users <
>>> difx-users at listmgr.nrao.edu> wrote:
>>>
>>>> Hi difx-devs and difx-users,
>>>>
>>>> I'd like to schedule a meeting to cover some logistics related to the
>>>> planned migration from SVN to git.  This is getting rather urgent because
>>>> we are approaching a natural breakpoint with some impending version
>>>> releases, plus I am applying for a second round of ADACS software support
>>>> to continue the implementation of GPU-DiFX and this will be massively
>>>> simplified if we are on git by mid-year.
>>>>
>>>> I'm proposing the week of May 23, and we will run into the usual
>>>> timezone issues with people spread across nearly every timezone worldwide.
>>>> The biggest longitude gap at the moment, with daylight savings in the
>>>> northern hemisphere, is east coast Australia to the US (with apologies to
>>>> anyone in Hawai'i).  So I would propose to hold this at e.g. 1300 UT, which
>>>> would be late in Australia, early in the US, and friendly in Asia and
>>>> Europe.  if you are interested in keeping abreast (or contributing to) the
>>>> svn to git migration, can you please respond to me only (no need to
>>>> reply-all) with the the following:
>>>> 1) time okay, could only do if earlier, or could only do if later; and
>>>> 2) which day(s) are free that week (or if that week is no good at all.)
>>>> by the end of this week?  I'll then publish a time or seek further
>>>> options.
>>>>
>>>> Also, please consider joining the DiFX slack if you haven't already -
>>>> ask me for an invite if you want to get on and aren't already.
>>>>
>>>> Cheers,
>>>> Adam
>>>>
>>>> --
>>>> !=============================================================!
>>>> Prof. Adam Deller
>>>> Centre for Astrophysics & Supercomputing
>>>> Swinburne University of Technology
>>>> John St, Hawthorn VIC 3122 Australia
>>>> phone: +61 3 9214 5307
>>>> fax: +61 3 9214 8797
>>>> !=============================================================!
>>>> _______________________________________________
>>>> Difx-users mailing list
>>>> Difx-users at listmgr.nrao.edu
>>>> https://listmgr.nrao.edu/mailman/listinfo/difx-users
>>>>
>>>
>>>
>>> --
>>> !=============================================================!
>>> Prof. Adam Deller
>>> Centre for Astrophysics & Supercomputing
>>> Swinburne University of Technology
>>> John St, Hawthorn VIC 3122 Australia
>>> phone: +61 3 9214 5307
>>> fax: +61 3 9214 8797
>>> !=============================================================!
>>>
>>
>>
>> --
>> !=============================================================!
>> Prof. Adam Deller
>> Centre for Astrophysics & Supercomputing
>> Swinburne University of Technology
>> John St, Hawthorn VIC 3122 Australia
>> phone: +61 3 9214 5307
>> fax: +61 3 9214 8797
>> !=============================================================!
>>
>
>
> --
> !=============================================================!
> Prof. Adam Deller
> Centre for Astrophysics & Supercomputing
> Swinburne University of Technology
> John St, Hawthorn VIC 3122 Australia
> phone: +61 3 9214 5307
> fax: +61 3 9214 8797
> !=============================================================!
>

-- 
!=============================================================!
Prof. Adam Deller
Centre for Astrophysics & Supercomputing
Swinburne University of Technology
John St, Hawthorn VIC 3122 Australia
phone: +61 3 9214 5307
fax: +61 3 9214 8797
!=============================================================!
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