Need higher resolution times for linpack benchmark

[Delbert Franz]

Hi,

I am running the standard 100x100 LINPACK benchmark program under 
Debian Lenny compiled with gfortran 4.3.2.  The results are highly 
erratic and stem from all the timers I have tried having an apparent 
resolution of one millisecond.  Consequently many of the times are 
shown as 0.0 or if non-zero, have so much noise that the results are 
useless.  I have tried CPU_TIME, SECOND, and DTIME.  

CPU_TIME claims to be able to produce microsecond resolution, but 
somehow it does not on my machine.  Running an Intel E8400 chip and 
the kernel is compiled with the various high-resolution timers 
included.  All of the times printed from CPU_TIME clearly show a 
resolution of one millisecond.  

Is there a way to get higher resolution than a millisecond from this 
version of gfortran?  

Thanks, 

       Delbert Franz