[Lemon-user] performance of network simplex on instance i_n13

[Kovács Péter]

Hi,

> My results with -mix (which does NOT compare to the above ones by no
> means):
>
> -int 63s
> -long 92s
> -double 68s
>
> Note that using 'long long' is much slower that even using double, at
> least on my 32bit CPU. It is also funny that
>        * using -int the running time is reported as being in the user
>          space,
>        * using -double it is reported in the sys,
>        * using -long it reported in the sys for the first time, but for a
>          second try it reported as 50%-50% between sys/user.

My results on one of our servers (64 bit machine) with gcc 4.1 and -O2 
option:

-mix -int    65s
-mix -long   68s
-mix -double 75s

So it seems that the relation between long long and double greatly 
depends on the architecture (32 or 64 bit machine).

Peter