[Fink-users] slow comparative execution time with mpfr on MBP vs Linux

[S. N. <se...@ma...>]

Hello,
 I am running an MBP  with OSX 10.4.11. This has an Intel Core 2 duo at 
2.13GHz  I also have a Linux box with Fedora Core 6 and an Intel Core 2 
duo at 2.13 GHz.   Both have 3 GB RAM.
 I compiled the attached code 'sample_bat.c'  a sample program using gmp 
and mpfr on both machines with the following execution times.  The code 
on the  MBP was compiled with cc -O3 and on the Linux bax with cc -O. 

Here are the execution times:

MBP:  
[sen@basie MPFR]$ time ./sample_bat
Sum is 2.7182818284590452353602874713526624977572470936999

real    0m2.384s
user    0m2.242s
sys     0m0.025s


Linux:
[sen@gumbie MPFR]$ time sample_bat
Sum is 2.7182818284590452353602874713526624977572470936999

real    0m1.057s
user    0m1.056s
sys     0m0.000s


Anyone know why the MBP is less than half the speed of the Linux box?   
Is there some setting that I am missing? 

Thanks for any ideas.

 -sen