SMP machine, run a program on a single CPU?

[Maurice Janssen]

Hi,

Is it possible to somehow force a program to run on a single CPU in an 
SMP system?
The reason I ask that on some SMP-capable architectures, I'm having some 
problems with ntpd.  On hppa and sgi, the clock won't sync because ntpd 
sees replies with negative delay:

Jul  9 08:58:19 hppa ntpd[21406]: reply from 192.168.4.12: negative 
delay -0.854615s, next query 3120s

(reported as PR6592)

If I run the bsd.sp kernel, the negative delays are gone and ntpd syncs 
without any problem.  I was wondering if the problem would occur if I 
could limit ntpd to a single CPU.  Diving into the code is way beyond my 
skills, so I was hoping that there is a utility like nice to achieve this.

Thanks,
Maurice