From: Ivan Matek (libbooze_at_[hidden])
Date: 2025-06-09 10:39:05
On Mon, Jun 9, 2025 at 10:31 AM Joaquin M López Muñoz via Boost <
boost_at_[hidden]> wrote:
> I'll use -native as you suggest. As for the difference between the original
> hash production scheme and the one proposed by Kostas (cells marked
> with *), numbers are not very conclusive, but looks like Kostas's approach
> incurs a slight degradation in execution time. I hope we can see this more
> clearly with the upcoming GHA benchmarks on dedicated machines.
>
>
btw one more thing that I noticed, but did not investigate in detail: gcc
14 numbers are much much worse than clang 20 on my machine, but just for
some values in tables, while others are super close.
I would not bother you for tiny performance difference, but this is huge.
At first I thought it is just I am doing something wrong, i.e. number of
elements, but other numbers match closely.
I do not know nice way to show you ratio of numbers from 2 HTML documents,
but so you can search for
13.71 and 13.64 in result_1M_num_release_withoutpragma_gcc_run0.html , you
will see the slow values.
This is not one off discrepancy, i.e. on multiple runs I get large
difference although it does fluctuate a bit.