[Haskell-cafe] Climbing up the shootout...

[Bulat Ziganshin]

Hello david48,

Thursday, September 25, 2008, 1:38:55 AM, you wrote:
>> please show me example that you mean and i will show exact reasons
>> why this Haskell code wasn't compared to the best C code

> The shootout seems pretty popular, and there's still a lot of C
> programmers around, so I wonder why the C code on the shootout would
> be of poor quality.

1. speed of most shootout examples heavily depends on availability and
quality of libraries bundled with the compiler. shootout authors
doesn't allow to use 3rd-party libs nor rewrite this functionality
from scratch. for example C lays down in multithreading tests because
C compilers doesn't include green thread libs

2. unlike Don, C authors can't modify libs bundled to their compilers
to reach out maximum speed on these benchmarks. for example, using
of readInt instead of generic read allowed to make program tens times
faster and even outperform a bit C version that uses standard library
functions


-- 
Best regards,
 Bulat                            mailto:Bulat.Ziganshin at gmail.com