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From Aaron Markham <aaron.s.mark...@gmail.com>
Subject Re: CI and PRs
Date Thu, 15 Aug 2019 03:39:30 GMT
The PRs Thomas and I are working on for the new docs and website share the
mxnet binary in the new CI pipelines we made. Speeds things up a lot.

On Wed, Aug 14, 2019, 18:16 Chris Olivier <cjolivier01@gmail.com> wrote:

> I see it done daily now, and while I can’t share all the details, it’s not
> an incredibly complex thing, and involves not much more than nfs/efs
> sharing and remote ssh commands.  All it takes is a little ingenuity and
> some imagination.
>
> On Wed, Aug 14, 2019 at 4:31 PM Pedro Larroy <pedro.larroy.lists@gmail.com
> >
> wrote:
>
> > Sounds good in theory. I think there are complex details with regards of
> > resource sharing during parallel execution. Still I think both ways can
> be
> > explored. I think some tests run for unreasonably long times for what
> they
> > are doing. We already scale parts of the pipeline horizontally across
> > workers.
> >
> >
> > On Wed, Aug 14, 2019 at 5:12 PM Chris Olivier <cjolivier01@apache.org>
> > wrote:
> >
> > > +1
> > >
> > > Rather than remove tests (which doesn’t scale as a solution), why not
> > scale
> > > them horizontally so that they finish more quickly? Across processes or
> > > even on a pool of machines that aren’t necessarily the build machine?
> > >
> > > On Wed, Aug 14, 2019 at 12:03 PM Marco de Abreu <
> marco.g.abreu@gmail.com
> > >
> > > wrote:
> > >
> > > > With regards to time I rather prefer us spending a bit more time on
> > > > maintenance than somebody running into an error that could've been
> > caught
> > > > with a test.
> > > >
> > > > I mean, our Publishing pipeline for Scala GPU has been broken for
> quite
> > > > some time now, but nobody noticed that. Basically my stance on that
> > > matter
> > > > is that as soon as something is not blocking, you can also just
> > > deactivate
> > > > it since you don't have a forcing function in an open source project.
> > > > People will rarely come back and fix the errors of some nightly test
> > that
> > > > they introduced.
> > > >
> > > > -Marco
> > > >
> > > > Carin Meier <carinmeier@gmail.com> schrieb am Mi., 14. Aug. 2019,
> > 21:59:
> > > >
> > > > > If a language binding test is failing for a not important reason,
> > then
> > > it
> > > > > is too brittle and needs to be fixed (we have fixed some of these
> > with
> > > > the
> > > > > Clojure package [1]).
> > > > > But in general, if we thinking of the MXNet project as one project
> > that
> > > > is
> > > > > across all the language bindings, then we want to know if some
> > > > fundamental
> > > > > code change is going to break a downstream package.
> > > > > I can't speak for all the high level package binding maintainers,
> but
> > > I'm
> > > > > always happy to pitch in to provide code fixes to help the base PR
> > get
> > > > > green.
> > > > >
> > > > > The time costs to maintain such a large CI project obviously needs
> to
> > > be
> > > > > considered as well.
> > > > >
> > > > > [1] https://github.com/apache/incubator-mxnet/pull/15579
> > > > >
> > > > > On Wed, Aug 14, 2019 at 3:48 PM Pedro Larroy <
> > > > pedro.larroy.lists@gmail.com
> > > > > >
> > > > > wrote:
> > > > >
> > > > > > From what I have seen Clojure is 15 minutes, which I think is
> > > > reasonable.
> > > > > > The only question is that when a binding such as R, Perl or
> Clojure
> > > > > fails,
> > > > > > some devs are a bit confused about how to fix them since they
are
> > not
> > > > > > familiar with the testing tools and the language.
> > > > > >
> > > > > > On Wed, Aug 14, 2019 at 11:57 AM Carin Meier <
> carinmeier@gmail.com
> > >
> > > > > wrote:
> > > > > >
> > > > > > > Great idea Marco! Anything that you think would be valuable
to
> > > share
> > > > > > would
> > > > > > > be good. The duration of each node in the test stage sounds
> like
> > a
> > > > good
> > > > > > > start.
> > > > > > >
> > > > > > > - Carin
> > > > > > >
> > > > > > > On Wed, Aug 14, 2019 at 2:48 PM Marco de Abreu <
> > > > > marco.g.abreu@gmail.com>
> > > > > > > wrote:
> > > > > > >
> > > > > > > > Hi,
> > > > > > > >
> > > > > > > > we record a bunch of metrics about run statistics
(down to
> the
> > > > > duration
> > > > > > > of
> > > > > > > > every individual step). If you tell me which ones
you're
> > > > particularly
> > > > > > > > interested in (probably total duration of each node
in the
> test
> > > > > stage),
> > > > > > > I'm
> > > > > > > > happy to provide them.
> > > > > > > >
> > > > > > > > Dimensions are (in hierarchical order):
> > > > > > > > - job
> > > > > > > > - branch
> > > > > > > > - stage
> > > > > > > > - node
> > > > > > > > - step
> > > > > > > >
> > > > > > > > Unfortunately I don't have the possibility to export
them
> since
> > > we
> > > > > > store
> > > > > > > > them in CloudWatch Metrics which afaik doesn't offer
raw
> > exports.
> > > > > > > >
> > > > > > > > Best regards,
> > > > > > > > Marco
> > > > > > > >
> > > > > > > > Carin Meier <carinmeier@gmail.com> schrieb am
Mi., 14. Aug.
> > > 2019,
> > > > > > 19:43:
> > > > > > > >
> > > > > > > > > I would prefer to keep the language binding in
the PR
> > process.
> > > > > > Perhaps
> > > > > > > we
> > > > > > > > > could do some analytics to see how much each
of the
> language
> > > > > bindings
> > > > > > > is
> > > > > > > > > contributing to overall run time.
> > > > > > > > > If we have some metrics on that, maybe we can
come up with
> a
> > > > > > guideline
> > > > > > > of
> > > > > > > > > how much time each should take. Another possibility
is
> > leverage
> > > > the
> > > > > > > > > parallel builds more.
> > > > > > > > >
> > > > > > > > > On Wed, Aug 14, 2019 at 1:30 PM Pedro Larroy
<
> > > > > > > > pedro.larroy.lists@gmail.com
> > > > > > > > > >
> > > > > > > > > wrote:
> > > > > > > > >
> > > > > > > > > > Hi Carin.
> > > > > > > > > >
> > > > > > > > > > That's a good point, all things considered
would your
> > > > preference
> > > > > be
> > > > > > > to
> > > > > > > > > keep
> > > > > > > > > > the Clojure tests as part of the PR process
or in
> Nightly?
> > > > > > > > > > Some options are having notifications here
or in slack.
> But
> > > if
> > > > we
> > > > > > > think
> > > > > > > > > > breakages would go unnoticed maybe is not
a good idea to
> > > fully
> > > > > > remove
> > > > > > > > > > bindings from the PR process and just streamline
the
> > process.
> > > > > > > > > >
> > > > > > > > > > Pedro.
> > > > > > > > > >
> > > > > > > > > > On Wed, Aug 14, 2019 at 5:09 AM Carin Meier
<
> > > > > carinmeier@gmail.com>
> > > > > > > > > wrote:
> > > > > > > > > >
> > > > > > > > > > > Before any binding tests are moved
to nightly, I think
> we
> > > > need
> > > > > to
> > > > > > > > > figure
> > > > > > > > > > > out how the community can get proper
notifications of
> > > failure
> > > > > and
> > > > > > > > > success
> > > > > > > > > > > on those nightly runs. Otherwise, I
think that
> breakages
> > > > would
> > > > > go
> > > > > > > > > > > unnoticed.
> > > > > > > > > > >
> > > > > > > > > > > -Carin
> > > > > > > > > > >
> > > > > > > > > > > On Tue, Aug 13, 2019 at 7:47 PM Pedro
Larroy <
> > > > > > > > > > pedro.larroy.lists@gmail.com
> > > > > > > > > > > >
> > > > > > > > > > > wrote:
> > > > > > > > > > >
> > > > > > > > > > > > Hi
> > > > > > > > > > > >
> > > > > > > > > > > > Seems we are hitting some problems
in CI. I propose
> the
> > > > > > following
> > > > > > > > > > action
> > > > > > > > > > > > items to remedy the situation
and accelerate turn
> > around
> > > > > times
> > > > > > in
> > > > > > > > CI,
> > > > > > > > > > > > reduce cost, complexity and probability
of failure
> > > blocking
> > > > > PRs
> > > > > > > and
> > > > > > > > > > > > frustrating developers:
> > > > > > > > > > > >
> > > > > > > > > > > > * Upgrade Windows visual studio
from VS 2015 to VS
> > 2017.
> > > > The
> > > > > > > > > > > > build_windows.py infrastructure
should easily work
> with
> > > the
> > > > > new
> > > > > > > > > > version.
> > > > > > > > > > > > Currently some PRs are blocked
by this:
> > > > > > > > > > > >
> https://github.com/apache/incubator-mxnet/issues/13958
> > > > > > > > > > > > * Move Gluon Model zoo tests to
nightly. Tracked at
> > > > > > > > > > > >
> https://github.com/apache/incubator-mxnet/issues/15295
> > > > > > > > > > > > * Move non-python bindings tests
to nightly. If a
> > commit
> > > is
> > > > > > > > touching
> > > > > > > > > > > other
> > > > > > > > > > > > bindings, the reviewer should
ask for a full run
> which
> > > can
> > > > be
> > > > > > > done
> > > > > > > > > > > locally,
> > > > > > > > > > > > use the label bot to trigger a
full CI build, or
> defer
> > to
> > > > > > > nightly.
> > > > > > > > > > > > * Provide a couple of basic sanity
performance tests
> on
> > > > small
> > > > > > > > models
> > > > > > > > > > that
> > > > > > > > > > > > are run on CI and can be echoed
by the label bot as a
> > > > comment
> > > > > > for
> > > > > > > > > PRs.
> > > > > > > > > > > > * Address unit tests that take
more than 10-20s,
> > > streamline
> > > > > > them
> > > > > > > or
> > > > > > > > > > move
> > > > > > > > > > > > them to nightly if it can't be
done.
> > > > > > > > > > > > * Open sourcing the remaining
CI infrastructure
> scripts
> > > so
> > > > > the
> > > > > > > > > > community
> > > > > > > > > > > > can contribute.
> > > > > > > > > > > >
> > > > > > > > > > > > I think our goal should be turnaround
under 30min.
> > > > > > > > > > > >
> > > > > > > > > > > > I would also like to touch base
with the community
> that
> > > > some
> > > > > > PRs
> > > > > > > > are
> > > > > > > > > > not
> > > > > > > > > > > > being followed up by committers
asking for changes.
> For
> > > > > example
> > > > > > > > this
> > > > > > > > > PR
> > > > > > > > > > > is
> > > > > > > > > > > > importtant and is hanging for
a long time.
> > > > > > > > > > > >
> > > > > > > > > > > > https://github.com/apache/incubator-mxnet/pull/15051
> > > > > > > > > > > >
> > > > > > > > > > > > This is another, less important
but more trivial to
> > > review:
> > > > > > > > > > > >
> > > > > > > > > > > > https://github.com/apache/incubator-mxnet/pull/14940
> > > > > > > > > > > >
> > > > > > > > > > > > I think comitters requesting changes
and not
> folllowing
> > > up
> > > > in
> > > > > > > > > > reasonable
> > > > > > > > > > > > time is not healthy for the project.
I suggest
> > > configuring
> > > > > > github
> > > > > > > > > > > > Notifications for a good SNR and
following up.
> > > > > > > > > > > >
> > > > > > > > > > > > Regards.
> > > > > > > > > > > >
> > > > > > > > > > > > Pedro.
> > > > > > > > > > > >
> > > > > > > > > > >
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

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