[gmx-users] stable branch using git

[Mark Abraham]

On Wed, May 1, 2013 at 2:50 AM, Sikandar Mashayak <symashayak at gmail.com>wrote:

> Hi Justin
>
> Thanks for explanation. But I am a bit confused because I am new to git.
> When I check out release-4-6 branch, the source code should be the same as
> the one in tarball from Gromacs website, right?


No. The tarball is made from a particular commit and that commit has a git
tag identifying it (though I did mess that up slightly for 4.6.1). History
then continues in the branch. Its head commit only coincides with a tag
immediately after a release.


> When I run git status I get
> # On branch release-4-6
> nothing to commit (working directory clean), I believe that means I have
> the released version of the code.
>

No, you have the head of the development branch from which releases are
currently being made. Do check out some git tutorial material.

The reason I am doing this is that I want to have just one directory for
> gromacs with subdirectories for its src, build and binaries. And in future,
> instead of downloading new releases, I want to just pull the changes and
> re-build.


In principle, that workflow can work, but you need to (e.g.) use "git
checkout v4.6" to check out the commit we tagged when we built the 4.6
tarball.


> Also, I plan to clone the same src directory on my different
> machines, so that I can have the same version on all machines.


You can do similar things with the tarball, so I don't see what you're
gaining :-)

Mark

Hopefully,
> in the future I may start doing some modifications here n there.
>
> Thanks
> Sikandar
>
>
> On Tue, Apr 30, 2013 at 7:38 PM, Justin Lemkul <jalemkul at vt.edu> wrote:
>
> >
> >
> > On 4/30/13 8:28 PM, Sikandar Mashayak wrote:
> >
> >> Thanks Justin.
> >>
> >> I replaced release-4-5-patches with release-4-6 while checking out the
> >> branch.
> >> When I installed it and checked the version string I get VERSION
> >> 4.6.2-dev-20130429-d13fc48.
> >> Does that mean I got the version which is still under development and
> not
> >> stable and tested?
> >> Should I be concerned using it to do a production run?
> >>
> >>
> > We generally discourage anyone from doing production work with anything
> > that's not an official release.  Anything you pull from the git repo is a
> > work in progress.  Periodic releases are generated when the code is
> > believed to be production-ready.  We do code review and build testing and
> > each patch is as reliable as we believe it to be :)
> >
> > The reference to a "stable branch" is probably a bit misleading, but the
> > master branch is currently undergoing large-scale changes, leaving it
> > perhaps a bit more "unstable" than release-4-6.  The release-4-6 branch
> is
> > the one from which the development team is producing actual releases.
> >
> > If you want the latest version, just download the 4.6.1 tarball from the
> > Gromacs website.  Version 4.6.2 should be out fairly soon, but there are
> > some issues that are still being cleaned up.
> >
> >
> > -Justin
> >
> > --
> > ==============================**==========
> >
> > Justin A. Lemkul, Ph.D.
> > Research Scientist
> > Department of Biochemistry
> > Virginia Tech
> > Blacksburg, VA
> > jalemkul[at]vt.edu | (540) 231-9080
> > http://www.bevanlab.biochem.**vt.edu/Pages/Personal/justin<
> http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin>
> >
> > ==============================**==========
> > --
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