Interestingly when I was working on my dissertation on neural networks back in 1990, we had a connection machine CM2 in my university and I implemented the back

Interestingly when I was working on my dissertation on neural networks back in 1990, we had a connection machine CM2 in my university and I implemented the backpropagation algorithm in C* (the variant of C that ran on the Connection Machine). But getting time on the CM2 was so hard that I gave up and used a cluster of RS6000 workstations that IBM had just donated to my university. Running at 35 MHz, the RS6000s were just amazingly fast machines for the time. [I have one of the earlier PhDs in neural network based machine learning as I graduated in 1992]