On Monday, 14 September 2015 at 13:37:18 UTC, John Colvin wrote:
On Monday, 14 September 2015 at 13:05:32 UTC, Andrea Fontana wrote:
On Monday, 14 September 2015 at 12:30:21 UTC, Fredrik Boulund wrote:
[...]

Also if problem probabily is i/o related, have you tried with:
-O -inline -release -noboundscheck
?

-inline in particular is likely to have a strong impact here


Why would -inline be particularly likely to make a big difference in this case? I'm trying to learn, but I don't see what inlining could be done in this case.

Anyway I think it's a good idea to test it against gdc and ldc that are known to generate faster executables.

Andrea

+1 I would expect ldc or gdc to strongly outperform dmd on this code.

Why is that? I would love to learn to understand why they could be expected to perform much better on this kind of code.

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