[Debian-med-packaging] Bug#919189: Fwd: probabel FTBFS on arm64, likely due to Eigen 3 NEON code

[L.C. Karssen]

Dear all,

As one of the developers of ProbABEL I can confirm this is a rounding
error. We have had similar problems in the past. The test run by make is
simply diff-ing the output of a test run with  a 'known good' file. Back
when ProbABEL was still actively developed, I tried my best to maintain
accuracy across the platforms I knew were being actively used by our
users. ARM and PPC where never among those, neither did I have access to
machines with that architecture.

All in all I think either of Andreas' proposed solutions is fine.


Best regards,

Lennart.

On 02-02-19 12:19, Andreas Tille wrote:
> On Sat, Feb 02, 2019 at 11:56:50AM +0100, Thierry Fauck at linux.ibm.com wrote:
>> Hi,
>>
>> Thanks for pointing out that my analysis wasn't good - the arm patch
>> doesn't change anything for ppc64el (which make sense whatsoever) - the
>> problem on ppc64el is similar to the one on arm except the test value
>> are opposite ! ( which was confusing).
>> So what do we need to do ? expect that someone with a better expertise
>> help going though it  ? ( can you confirm we stay with that bug for both
>> arch or do we need to open one for ppc64el ?)
> 
> As long as we are sure that its just a rounding error I think an apropriate
> solution would be to ignore the error for ppc64el (either exclude the test
> or run
> 
>     dh_auto_test || true
> 
> to be able to inspect the log.
> 
> Do you think that's in your interest?
> 
> Kind regards
> 
>       Andreas.
> 

-- 
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L.C. Karssen
's-Hertogenbosch
The Netherlands

lennart at karssen.org
http://blog.karssen.org
GPG key ID: A88F554A
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-

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