Re: OT: Re: A very slow program

On 26/10/2024 15:33, Bonita Montero wrote:
> Am 26.10.2024 um 16:28 schrieb Vir Campestris:
> 
>> You're on Windows aren't you? I do know you have a far more powerful 
>> machine than I do. I'm running Ubuntu with Gnu compiler. (I tried 
>> Clang, but it's slower)
> 
> I compared your code against mine on a AMD 7950X.
> 
> 
Which operating system, and which compiler?

It's probably also worth trying for a much larger number of primes. I 
wrote my command line parser so it will try to read the number as a 
double if it isn't an integer.

For 100000000000 primes my code on my machine is 39s, and yours is 3:46.

(I've got the mod30 version down to 28s now, but met an intractable 
optimiser funny)

Andy