On Mon, Jun 9, 2025 at 10:31 AM Joaquin M López Muñoz via Boost < boost@lists.boost.org> 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.