Cray built a massively parallel machine out of a bunch of Alphas. (Cray Research Inc, iirc, not Seymour Cray). The T3 I think.

DEC had bragged about the features of the cpu useful for parallelization. Cray engineering complained about the features missing for parallelization. It was all described in a glossy Cray monthly magazine description of the new machine but I've been unable to locate a copy.

I disliked the Alpha floating point, it was always signalling exceptions for underflow. Otherwise a fine set of machines.