Andrei Alexandrescu needs to read this
kozzi11 at gmail.com
Thu Oct 24 07:12:27 UTC 2019
On Wed, Oct 23, 2019 at 11:40 PM welkam via Digitalmars-d
<digitalmars-d at puremagic.com> wrote:
> I watched many of his talks and he frequently talks about
> optimization that produce single digits % of speed up in
> frequently used algorithms but doesnt provide adequate prove that
> his change in algorithm was the reason why we see performance
> differences. Modern CPUs are sensitive to many things and one of
> them is code layout in memory. Hot loops are the most susceptible
> to this to the point where changing user name under which
> executable is run changes performance. A paper below goes deeper
> into this.
> Producing Wrong Data Without Doing Anything Obviously Wrong!
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