[llvm-dev] Failures on clang-with-lto-ubuntu builders

[David Blaikie via llvm-dev]

On Fri, May 21, 2021 at 12:46 PM Galina Kistanova <gkistanova at gmail.com>
wrote:

> Thanks, Tom!
>
> The both builders are back to normal and should work reliably.
>
> The memory usage during the build grew up for about 15% because of
> https://reviews.llvm.org/rGb5c63e30ca1af7e36ba5069eb0121d1eb4b06ebb, and
> pushed the builders over the edge.
>

Yevgeny - this seems like a significant increase in memory usage. Is that
intended? What's the general motivation/justification for the change?


>
> Galina
>
> On Tue, May 11, 2021 at 1:12 AM pawel k. via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> Cool. Thanks for letting me become less ignorant. Im still discovering
>> llvm and I pretty much love what I saw so far. Llvm+clang is a small wonder
>> of the world.
>>
>> -Pawel
>>
>> wt., 11.05.2021, 09:15 użytkownik David Blaikie <dblaikie at gmail.com>
>> napisał:
>>
>>> On Mon, May 10, 2021 at 11:40 PM pawel k. <pawel.kunio at gmail.com> wrote:
>>>
>>>> Hi Tom,
>>>> That looks like great quick fix, Im wondering if we could propose data
>>>> format or computation model change for example to db- or other
>>>> disk-vs-mem-based where we could lto link huge projects anyway. I wonder
>>>> whether whole lto data needs to be loaded into mem at once and whether its
>>>> tree- or other datastructure based.
>>>>
>>>
>>> That's what ThinLTO is intended to/does address - but has tradeoffs. It
>>> has limited whole program data - but better than traditional compilation,
>>> since it can use profiling/other analysis to inform how to partition the
>>> program.
>>>
>>> - Dave
>>>
>>>
>>>>
>>>> -Pawel
>>>>
>>>> wt., 11.05.2021, 07:26 użytkownik Tom Stellard via llvm-dev <
>>>> llvm-dev at lists.llvm.org> napisał:
>>>>
>>>>> On 5/10/21 10:09 PM, Tom Stellard wrote:
>>>>> > On 5/10/21 10:03 PM, David Blaikie wrote:
>>>>> >> best to check the bot owners & include them on an email like this?
>>>>> But yeah, if they aren't responsive to stabilizing their bots - certainly
>>>>> open to disabling them straight on the zorg repo.
>>>>> >>
>>>>> >
>>>>> > Is there a list of bot owners somewhere?  I tried to dig through the
>>>>> llvm-zorg
>>>>> > repo to figure out who owned the bot, but I couldn't find anything.
>>>>> >
>>>>>
>>>>> I've learned that there are instructions for finding bot owners in the
>>>>> Developer Policy:
>>>>> https://llvm.org/docs/DeveloperPolicy.html#working-with-the-ci-system
>>>>>
>>>>> It looks like Galina is the owner of these workers.
>>>>>
>>>>> -Tom
>>>>>
>>>>> > -Tom
>>>>> >
>>>>> >> On Mon, May 10, 2021 at 9:59 PM Tom Stellard via llvm-dev <
>>>>> llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
>>>>> >>
>>>>> >>     Hi,
>>>>> >>
>>>>> >>     Both the clang-with-lto-ubuntu and
>>>>> clang-with-lto-ubuntu-release builders are
>>>>> >>     consistently failing due to one of the linker jobs running out
>>>>> of memory.
>>>>> >>     Is there any easy way to fix these failures (Maybe by using
>>>>> zram?)
>>>>> >>     If not, can we disable these bots?
>>>>> >>
>>>>> >>     Thanks,
>>>>> >>     Tom
>>>>> >>
>>>>> >>     _______________________________________________
>>>>> >>     LLVM Developers mailing list
>>>>> >>     llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>
>>>>> >>     https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev <
>>>>> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev>
>>>>> >>
>>>>> >
>>>>>
>>>>> _______________________________________________
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>>>>>
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>
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