John Mashey

John R. Mashey (born 1946) is an American computer scientist and technology executive, recognized for his contributions to computer architecture, operating systems, and performance benchmarking, as well as his later work in science communication. He earned a Ph.D. in computer science from Pennsylvania State University, where he developed the ASSIST ssembler language teaching software. At Bell Labs, he contributed to the development of PWB/UNIX and authored the "Mashey Shell". He later held leadership roles at Convergent Technologies, MIPS Computer Systems, and Silicon Graphics, where he helped design the MIPS RISC architecture and the NUMAflex modular system. A founder of the Standard Performance Evaluation Corporation (SPEC) and long-time organizer of the Hot Chips conferences, Mashey has been credited with popularizing the concept of big data in the 1990s. In recognition of his impact on computing, he received Penn State’s Outstanding Engineering Alumni Award and the USENIX Lifetime Achievement Award. In retirement, Mashey became active in science advocacy.