Need higher resolution times for linpack benchmark

[Jerry DeLisle]

Delbert Franz wrote:
> 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?  

Ignore that last.  I just noticed you already tried CPU_TIME.  Now I seem to 
recall we have a PR open for this.

Jerry