Multithreading Architecture

Mario D. Nemirovsky is an ICREA Research Professor at the Barcelona Supercomputer Center, where he has been since 2007. He holds 62 patents and has authored over 30 research papers. Mario is a pioneer in multithreaded hardware-based processor architectures. During his tenure with the University of California, Santa Barbara, Mario co-authored some of the seminal works on simultaneous multithreading. Mario has made key contributions to other areas of computer architecture, including high performance, real-time, and network processors. He founded ConSentry Networks, Inc. where he served as CTO and VP Chief Scientist. He was the architect of ConSentry high performance processor (LSP-1) in which he pioneered the concept of Massively Multithreading (MMT). Earlier, Mario founded Flowstorm and XStream Logic, Inc. Before that, he was a chief architect at National Semiconductor, PI Researcher at Apple Computers, and Chief Architect at Weitek Inc. As chief architect at Delco Electronics, GeneralMotors (GM), he architected the GM multithread engine controller. He received his Ph.D. in ECE from University of California, Santa Barbara in 1990.Dean Tullsen is a Professor in the Computer Science and Engineering department at the University of California, San Diego, where he has been since 1996. He has authored over 90 research papers and hold 4 patents. In addition to co=authoring some of the seminal works on simultaneous multithreading, he and his co-authors have introduced many concepts to the research community, including speculative precomputation, symbiotic job scheduling, critical-path prediction, conjoined cores, single-ISA heterogeneous multicore architectures, balanced multithreading, and data-triggered threads. He received his B.S.and M.S.in computer engineering from UCLA, and his Ph.D.from University of Washington.He is a fellow of the IEEE and a fellow of the ACM. He has twice had papers selected for the International Symposium on Computer Architecture InfluentialPaper Award.

• Introduction.- Multithreaded Execution Models.- Coarse-Grain Multithreading.- Fine-Grain Multithreading.- Simultaneous Multithreading.- Managing Contention.- New Opportunities for Multithreaded Processors.- Experimentation and Metrics.- Implementations of Multithreaded Processors.- Conclusion.