Making time measurements

[K. Venkatesh Prasad]

Dear sgi-netters,

I am a newuser on the SGI machines and work on a 4D/50GT SGI machine.
Would someone have any pointers to making accurate (millisecond) time
measurements on the machine. What I need is the following.

0. I animate a figure or several different figures in time-sequence.
1. I need to have an observer "press" a mouse key to record 
   observation instances ... the time intervals could be as short as a
few milliseconds.

Is there a way to do this on the SGI machine??

Many thanks in advance,

Regards

Prasad
-- 
K. Venkatesh Prasad
Machine Vision Group