Re: Investigating a reproducibility failure

[Ludovic Courtès]

Konrad Hinsen <konrad.hinsen@fastmail.net> skribis:

> There is obviously a trade-off between reproducibility and performance
> here.

I tried hard to dispel that belief: you do not have to trade one for the other.

Yes, in some cases scientific software might lack the engineering work
that allows for portable performance; but in those cases, there’s
‘--tune’.

  
https://hpc.guix.info/blog/2022/01/tuning-packages-for-a-cpu-micro-architecture/

We should keep repeating that message: reproducibility and performance
are not antithetic.  And I really mean it, otherwise fellow HPC
practitioners will keep producing unverifiable results on the grounds
that they cannot possibly compromise on performance!

Thanks,
Ludo’.