On-Chip Multiprocessor with Simultaneous Multithreading

Kyoung Park et al. 13 As more transistors are integrated onto bigger die, an onchip multiprocessor will become a promising alternative to the superscalar microprocessor that dominates today’s microprocessor marketplace. This paper describes key parts of a new on-chip multiprocessor, called Raptor, which is composed of four 2-way superscalar processor cores and one graphic co-processor. To obtain performance characteristics of Raptor, a program-driven simulator and its programming environment were developed. The simulation results showed that Raptor can exploit thread level parallelism effectively and offer a promising architecture for future onchip multiprocessor designs.