NURB surface drawing, problem with video RAM

I have return code for NURBC and NURBS using
GLU lib. (Linux and Unix user)
When I run my NURBS code on 64 Video RAM machine it works fine(GeForce Card). But
when I run my code on low video ram machine
it does not work.
Also is there any prob with GLU less than 1.3?

If I export my display on machine other than linux like HP or ALPHA, which does not have
mesa lib code still work, and provides good

Last query, does any one have good documentation on NURBS rendering using GLU.?