Bug#975007: src:xmds2: autopkgtest times out on ppc64el (and sometimes on amd64)

[Paul Gevers]

Hi Rafael,

On 18-11-2020 08:54, Rafael Laboissière wrote:
>> Your package has an autopkgtest, great! However, it fails due to
>> timeout on ppc64el (after 2:47 hours) and regularly on amd64 too. Can
>> you please investigate and fix the situation?
>>
>> To avoid needlessly stress our infrastructure, I'll block this package
>> on ppc64el until this bug is fixed.
> 
> Thanks for the heads up, Paul.
> 
> Since the xmds2 package has a huge amount of unit tests and since they
> involve numerical computation of complicated problems (partial
> differential equations), running the whole set of tests takes usually a
> lot of time.

Is that really the problem? Is ppc64el so much slower than the other
architectures (I didn't just now check the numbers, but thought they are
regularly *much* lower)? Also, what makes the difference for the timing
out ones on amd64? The load on the host?

> The only way the timeout issue can be fixed is by preventing some test
> from being run.  I will take a look at this, as time permits.

If you can split the tests over multiple autopkgtests, each autopkgtest
gets it's own 2:47 hour timeout (yes, there is a global timeout too, but
it's higher). See $(man autopkgtest) for the numbers, we use the defaults.

Paul

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