[yt-dev] Unit refactor, Trello, SPH, etc

[Nathan Goldbaum]

On Tue, Feb 4, 2014 at 6:54 PM, Matthew Turk <matthewturk at gmail.com> wrote:
> Hi all,
>
> Lately, a lot of the yt-3.0 dev has been going on in the unitrefactor
> domain.  Britton, John, Nathan and I (in alphabetical order :) have
> been pushing pretty hard on getting things in order.  I've been trying
> to keep things organized a bit by using Trello, which Sam showed me
> and was pretty cool -- I'm not sure I can give out access to writing
> to the boards to anybody, but I think the yt boards are all "public"
> readable, and you can request write privs:
>
> https://trello.com/b/yv7o0dTp/unit-refactor
>
> Anyway, as an update, here's where we stand on unit refactor.
>
> Big blockers:
>
>  * MOAB, GDF, Pluto, Chombo frontends
>  * A few remaining (minor) cosmology issues that Britton's just about
> got finished and for which I owe some unit tests
>  * Some discussion about metallicity units:
> https://bitbucket.org/MatthewTurk/yt/pull-request/38/fixing-cgs-unit-conversions-for-angle-and
>  * Docs haven't been copied in yet, but John Z has updated the
> bootcamp to 3.0 (units) style.
>
> I think that's ... just about it.  At some point, maybe not
> *immediately*, we also want to get non-CGS units much, much easier to
> set as the default.

Parallelism/buffer interface issues still needs to be looked at.

>
> So, the other thing -- we *just* landed (in unit refactor) SPH support
> with smoothing fields.  More on this is forthcoming, but I'm pretty
> pleased with where it is now, and best of all there's room for
> improvement and optimization.

This is the Eris simulation at z=0, visualized with SPH smoothing
fields: http://imgur.com/a/Fx5VL

A few of you have already seen this, I just thought it was too cool
not to share.

>
> I'm going to be traveling a good amount the next couple weeks, but I
> hope to be able to address the remaining blockers, and then we can
> land the unit refactor in mainline yt-3.0 at some point after the
> documentation is included.
>
> We'll let that sit for a while, and then at some point the
> "rebranding" PR (which will be more invasive technically, but *less*
> invasive API-wise) can be issued, tested, and landed.  I actually
> think it might be reasonable to get 3.0 out ... kind of soon-ish.
>
> Anyway, if you want to test it out, grab the unitrefactor bookmark
> from MatthewTurk/yt ; I'll update the PR into the main yt repository
> as soon as these next couple PRs pass into my repo.
>
> -Matt
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