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

[David Blaikie via llvm-dev]

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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