gfortran: the good news and the good news

[Toon Moene]

Hans Horn wrote:

> Toon Moene wrote:

>> Oops - he said "Cygwin/WinXP" - now *that's* Stone Age material ....

> yup - its just plain 32 bit mode (don't I feel like a dinosaur now?).

Well, what you *should* feel is the pain that you don't get *another* 20 
% performance increase when running your laptop in 64 bit mode (I've 
been using laptops like that - under Debian - since mid-2005).

64 bits gives you more integer and floating point registers, SSE 
instructions by default (you didn't enable them on your compilation), 
hence vectorization (at -O3), etc.

Cheers :-)

-- 
Toon Moene - e-mail: toon@moene.org - phone: +31 346 214290
Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands
At home: http://moene.org/~toon/
Progress of GNU Fortran: http://gcc.gnu.org/gcc-4.5/changes.html