Status of the AArch* builders (was: Re: [PATCH v2 02/10] Add Aarch64 SVE Linux headers)

[Sergio Durigan Junior <sergiodj at redhat dot com>]

On Friday, June 15 2018, Alan Hayward wrote:

>> On 15 Jun 2018, at 10:45, Ramana Radhakrishnan <ramana.radhakrishnan@foss.arm.com> wrote:
>> 
>> On 12/06/2018 21:29, Sergio Durigan Junior wrote:
>>> On Tuesday, June 12 2018, Alan Hayward wrote:
>>>>> On 12 Jun 2018, at 17:34, Sergio Durigan Junior <sergiodj@redhat.com> wrote:
>>>>> 
>>>>> On Tuesday, June 12 2018, Simon Marchi wrote:
>>>>> 
>>>>>> On 2018-06-12 10:37, Alan Hayward wrote:
>>>>>>> Sorry, I did miss this one (I think I sent my reply to the previous
>>>>>>> one more or less the same time you sent this).
>>>>>>> 
>>>>>>> If I commit this, (I think) this is going to cause buildbot to break
>>>>>>> for the aarch64 builds.
>>>>>>> (Out of interest - I’ve heard people say they tested on buildbot. Are
>>>>>>> there some instructions for doing that? I can try it out.)
>>>>>> 
>>>>>> Hmm you're right.  Though maybe we can have additional
>>>>>> commands/configure options specific to the aarch64 builders?  They
>>>>>> could download a kernel tarball, install the headers somewhere (that
>>>>>> doesn't take long, no need to build the kernel) and point to them.
>>>>>> Sergio, would that be possible/a good idea?
>>>>> 
>>>>> I'm not sure.  For starters, the Aarch64 builders have kinda been
>>>>> forgotten since Yao stopped contributing regularly to GDB (he is the
>>>>> maintainer of the machines behind the builders).  So the very first
>>>>> thing we'd need to do is to put the builders in a good shape again
>>>>> (they're currently with 273 pending builds in the queue!).  This is
>>>>> something that's been on my TODO list for a while now, and I was going
>>>>> to ask Alan (or anyone from ARM) if they're not interested in taking
>>>>> over the maintenance of these machines.
>>>> 
>>>> Looking after the aarch64 boxes does sound like a job for an Arm person.
>>>> I guess it’ll be fairly important to get those queues cleared _before_
>>>> 8.2 is released. I can certainly take a look at the pending builds in
>>>> the next few weeks.
>>> Yeah, what I do in these cases is cancel all of the pending builds,
>>> i.e., start fresh.
>>> I'm glad you're interested in taking care of the machines.  TBH, I was
>>> even considering disabling them for now, since at least one machine has
>>> been offline for a long time, and the other has this giant queue.  I'm
>>> not sure if you're going to use the same machines as Yao was using
>>> (IIRC, he was using machines from the GCC Compile Farm).
>>>>> Then, I think the best approach for the SVE builds would be to manually
>>>>> download a Linux kernel, put the sources somewhere, and then I could
>>>>> configure a specific builder to build GDB with the SVE headers.
>>>>> 
>>>> 
>>>> Given the current queues, I suspect we’d not get this done before the 8.2
>>>> branch.
>>> I wouldn't count on that.
>>>> I’m thinking configure check of Pedro’s sounds the first step, then once
>>>> the aarch64 build queues have been cleared, get some sve builds added.
>>>> 
>>>> The SVE headers are in Ubuntu 18.04 - so “all” that’s needed is to do a
>>>> dist upgrade on them (I suspect there are probably lots of reasons why
>>>> that can’t be done!)
>>> Yeah, I honestly don't know :-/.  If you're planning to continue using
>>> the GCC Farm machine, then I think the best option would be to contact
>>> the admins and ask them.
>> 
>> So I arranged for those machines in the compile farm and I believe I
>> have super user privileges on them. Updating to 18.04 may be an
>> option but something I don't want to do remotely and in a rush.
>> 
>> Alan, please reach out to me if you need any help on the compile farm machines, I can help out.
>> 
>
> Oh that’s good news (I thought they had come from Linaro).
>
> If the headers get added to the gdb build then there’s no urgency to
> update the boxes to ubuntu 18.04. However, 18.04 is the latest LTS, so
> it’s possibly worth doing eventually (but not right now).

Hi guys,

Just a ping to see if you have progressed on this.  I've left the AArch*
builders there, and now they're *really* behind (more than 1000 builds
in the queue), and at least one of the buildslaves is offline.

I will temporarily remove the builders now, but it would be really nice
to keep having AArch* builders in our BuildBot.

Thanks a lot,

-- 
Sergio
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