Dr. David and Gregory Chudnovsky in 1996 were able to calculate the value 
of Pi to about 9 billion digits.  Amazing.  The test took them one week to 
run and verify the result.   Because of their astonishing achievement in
transcendental number such as Pi, Maple V uses the Chudnovsky's formula to 
general accurate digits of Pi...  

Their computer, I think it is called M-Zero is among the fastest computer 
in the world, probably trailing those of CRAY research, but considering the 
computer is assembled by two brothers from scratch.  This is pretty amazing.

Hello! Do you know anything about David and Gregory Chudnovsky? They built a supercomputer they named m zero. In 1992, an article appeared in the New Yorker Magazine regarding the construction of this computer and their computation of pi. Do you know if Gregory is still surviving his illness, if either one of them were hired by a university, are they still computing pi?
Any response would be appreciated.