dorsal team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

It's just the general feeling I get when experimenting with a new
setup for my system (and therefore running Dorsal repeatedly for
testing). External packages are built fast, but simple stuff like FFC
takes a really long time just becase the bzr download is so slow.

Here are some numbers for DOLFIN:

$ time wget http://fenicsproject.org/pub/software/dolfin/dolfin-snapshot.tar.gz
real    0m23.555s

$ time bzr branch lp:dolfin
real    5m7.337s

$ cd dolfin; time bzr pull
real    0m7.107s

So when doing a fresh install, the difference is 23s for tarball vs
5min for bzr.

And for updated install, the difference is 23s for tarball vs 7s for
bzr, in the best case (longer for bzr if something actually changed).

The extra 16s for tarball update is not very noticeable, but the extra
5 min for fresh install with bzr is very noticeable.

--
Anders


On Mon, Oct 22, 2012 at 09:21:57AM +0200, Harish Narayanan wrote:
> Hmm. I am not sure. I guess that depends on how often one updates their
> sources for unstable builds on dorsal.
>
> Harish
>
> On 10/22/12 9:20 AM, Anders Logg wrote:
> > Yes, but my assertion is that cost is smaller than needing to branch
> > the entire source tree.
> >
> >> I mean the user pulling it via dorsal from fpo. They then have to get
> >> the entire tarball each time, right? (As opposed to tiny deltas via bzr).
> >>
> >> Harish
> >>
> >>
> >> On 10/22/12 9:14 AM, Anders Logg wrote:
> >>> How do you mean? The snapshot would be updated every 5 min by a
> >>> cronjob on fenicsproject.org.
> >>>
> >>>> And how would one update the snapshot, which I am assuming is a tarball
> >>>> created by bzr archive (or whatever the export command is)?
> >>>>
> >>>> Harish
> >>>>
> >>>> On 10/22/12 9:09 AM, Anders Logg wrote:
> >>>>> Would it be a good idea to store snapshots of the FEniCS packages on
> >>>>> the server for faster installation with Dorsal? The bzr cloning takes
> >>>>> forever. We could have a cronjob running on the server for pulling and
> >>>>> updating the snapshots every say 5 min. We are already pulling for the
> >>>>> buildbots.
> >>>>>
> >>>>
> >>
>