core dumped?

[SONGYONGJIA <qgeng@xxxxxxxxxxxxxxxxxx>]

Hello all,
!@!@!@ When I finished install ferret in IBM_RS6000, and typed "% ferret
-gui", I got the follow error:
!@!@!@!@!@!@!@!@!@!@!@!@!@!@!@!@!@!@!@ Illegal instruction (core dumped)

!@!@!@ If I type ferret, I may enter ferret like this:
!@!@!@!@!@!@!@!@!@!@!@ % ferret
!@!@!@!@!@!@!@!@!@!@!@ NOAA/PMEL TMAP
!@!@!@!@!@!@!@!@!@!@!@ Program FERRET (GUI)
!@!@!@!@!@!@!@!@!@!@!@ Version 4.45 - 01/17/97
!@!@!@!@!@!@!@!@!@!@!@ 13-Jun-97 21:10
!@!@!@!@!@!@!@!@!@!@!@!@ yes?
!@!@!@ But I typed "go tutorial", I also got the error:
!@!@!@!@!@!@!@!@!@!@!@ Illegal instruction (core dumped)
!@!@!@ The file "tutorail.jnl" in the examples directory.
!@!@!@ Why?
!@!@!@ Thank you!