I know nothing of Gregory, but David is at Polytech in Brooklyn.

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.