On Sun, 08 Feb 2009 18:40:53 +0300, Denis Koroskin <[email protected]> wrote:

On Sun, 08 Feb 2009 18:09:41 +0300, naryl <[email protected]> wrote:

It's a bit offtopic but I'd be grateful if someone can explain why D with structs completes this simple benchmark (see attachment) so slowly compared to C++ with classes on stack:

D struct - 27.85s
C++ stack - 8.32s

D class - 271.58s
C++ heap - 249.32s

Compiled with "dmd -O". -release decreases performance by 10% in this case. -inline doesn't affects it at all.

I noticed that you calculate Fib(27) in fibs.cc and Fib(40) in fibs.d
Can this affect such a big difference between C++ and D version?


They both perform roughly the same when this typo is corrected.

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