[Buildbot-devel] Parallel builds on slaves

[Amber Yust]

Multiple slaves specified for one builder = Buildbot picks a random slave to
use for any given build of that builder.

Multiple builders that all specify the same slave = 1 build from each
builder can be running in parallel on that slave (up to that slave's
max_builds).

Basically, you got the parallelism backwards. :)

~Amber

On Tue, Nov 23, 2010 at 1:29 PM, Ryan Haynes <rhaynesak at gmail.com> wrote:

> Hello all,
> I'm new to the mailing list.  I work at stsci.edu.  We are starting to
> use buildbot for various projects in house.  Hopefully we can get some
> adaptation amongst developers as everyone is pretty oldschool here.
>
> I have an issue...
> I'm kind of lost on this.  The documentation suggest that a build
> factory will run on all slaves in parallel defined by slavenames in
> the builder. However, I do not see this happen.
>
> for instance...
>
> bf1 = factory.BuildFactory()
> bf1.addStep(ShellCommand(command=['echo', 'IM ALIVE']))
>
> c['builders'] = []
> from buildbot.config import BuilderConfig
>
> c['builders'].append(
>    BuilderConfig(name='tester', slavenames=['bond', 'rh5_arzach'],
> factory=bf1)
> )
>
> tester = timed.Periodic(name="FIVE_MIN",
>                builderNames=["tester"],
>                periodicBuildTimer=5*60)
>
> When I look at the waterfall it shows one buildslave.  It alternates
> the buildslaves each time the periodic scheduler runs.  So first I'll
> have bond run, then five minutes later arzach runs.
>
> I am really confused about this behavior.  Shouldn't they run on both
> machines in parallel?
>
> Cheers,
> Ryan
>
>
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