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Official Open Build Service Documentation. Content gets reviewed and edited. Generated books are available at http://www.openbuildservice.org
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constraints: not clear what setting "hardware:jobs" really does/means #325

Closed smithfarm closed 3 months ago

smithfarm commented 4 months ago

The build constraints chapter mentions a constraint qualifier called hardware:jobs and says it is used "to require a minimal number of pre-configured parallel jobs for the build". But it's not clear what this actually means or how it is implemented.

adrianschroeter commented 4 months ago

On Dienstag, 13. Februar 2024, 18:05:31 CET Nathan Cutler wrote:

The build constraints chapter mentions a constraint qualifier called hardware:jobs and says it is used "to require a minimal number of pre-configured parallel jobs for the build". But it's not clear what this actually means or how it is implemented.

it is actually a miss-use as jobs are not really a hardware capability. It is just how the work is configured.

Maybe we should not even document it anymore as it is only miss-used and can not be really considered to be a real requirement to be able to build a source.

Some people just use it to get a maybe faster worker.

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Adrian Schroeter @.***> Build Infrastructure Project Manager

SUSE Software Solutions Germany GmbH, Frankenstraße 146, 90461 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Ivo Totev

smithfarm commented 4 months ago

OK. It sounded like it somehow affects the -j setting passed to make/cmake ?

smithfarm commented 4 months ago

But now I'm guessing it means something like this: "My build uses -j 4 so I want a build worker that can run at least four parallel build processes."

smithfarm commented 4 months ago

For example, as a reader, I don't understand how hardware:jobs 4 differs from hardware:processors 4.

smithfarm commented 4 months ago

I have attempted to fix this in #326.