So, isn't that simple-lightweight system supposed to be an HTCondorCE,
if you believe its cheerleaders [assuming you use HTCondor as your
batch system]?
(Similarly, in general, "running things in predesigned virtual
machines" is a thing which HTCondor can do - and has been able to do
for a decade now - if what you like is the "uniform, single image"
aspect of VAC. Obviously, it's not as "hands-off" as VAC is - but,
again, that's part of the administrative/control tradeoff which VAC
sort of relies on.)
If you're using something which is not a HTCondor batch system, then
obviously HTCondorCEs are less useful! The question is: what's the
pain point for you: the CE, or the batch system?
Sam
P.S. I don't think "GridPP" as a monolithic body has a uniform recommendation.
On Tue, 12 Feb 2019 at 14:19, George, Simon <[log in to unmask]> wrote:
>
> Thanks, I see your point Sam.
>
> What seems to be missing is a simple, lightweight site option for all the grid services needed to interface to a local batch system.
>
> VAIB is a great solution except that we still want a local batch system. I guess most sites need that?
>
> I'm not clear what GridPP is recommending, because I thought it was VAIB.
>
>
>
> ________________________________
> From: Testbed Support for GridPP member institutes <[log in to unmask]> on behalf of Sam Skipsey <[log in to unmask]>
> Sent: 12 February 2019 09:54
> To: [log in to unmask]
> Subject: Re: VAC with VM condor VM to support local batch jobs?
>
> So, my belief was that the entire point of VAC (originally) was to
> avoid needing a local batch system if you just want to support Grid
> jobs [ that is, that the VAC vms would precisely not support local job
> scheduling, because you can simplify a local site if all the
> "scheduling" happens at the remote end - in, for example, a DIRAC
> instance, or other VO-owned job-submission-to-pilots framework]. In
> general, I've always argued that if you have a need to support local
> users and run jobs locally, this justifies having an actual batch
> system.
>
> Sam
>
> On Mon, 4 Feb 2019 at 10:40, George, Simon <[log in to unmask]> wrote:
> >
> > And if not, how else do VAC sites make their resources available to local users?
> >
> > ________________________________
> > From: Testbed Support for GridPP member institutes <[log in to unmask]> on behalf of George, Simon <[log in to unmask]>
> > Sent: 04 February 2019 10:38
> > To: [log in to unmask]
> > Subject: Re: VAC with VM condor VM to support local batch jobs?
> >
> > I had no answers to this, so can I just check that this means literally no-one has tried or thought about this?
> > Thanks,
> > Simon
> >
> > ________________________________
> > From: George, Simon
> > Sent: 28 January 2019 11:07
> > To: [log in to unmask]
> > Subject: VAC with VM condor VM to support local batch jobs?
> >
> >
> > I'd like to know if anyone who runs VAC has tried using the VMcondor VM to get local batch jobs onto their VAC nodes?
> >
> > Or if not are you thinking about it?
> >
> > Thanks,
> >
> > Simon
> >
> >
> > ________________________________
> >
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> >
> >
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