Search:

I am reading the Optimization section of the GCC man page a as maniac :-)

The -O3 option didn't improve still. It even made calculations a bit slower, 216 (O2) vs. 227 (O3) seconds. Anyway, I am...

Oh, Mats! Why didn't I ask you before!!! :-)

I can't believe it. Without -ffast-math a single runs takes 1345 seconds, with this flag - just 218 seconds - 6-fold difference!!! I have to do...

I am using GCC:


$ gcc --version
i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5367)


I run it like:

Thanks Mats! It seems that I have the situation that you described in the second paragraph. I added a lot of distance calculations (two nested loops with distance calculations on each steps). Seems...

Hello!

It seems I have some misunderstanding about some aspects of C programming or there are some compiler issues. I have a function:



double myFunction1( myData *data )
{
double...