The document discusses multiprocessing and thread-level parallelism. It covers four categories of parallel architectures: SISD, SIMD, MISD, and MIMD. MIMDs offer flexibility as they can function as single-user multiprocessors, run many tasks simultaneously, or a combination. MIMDs also leverage existing processor designs through replication. Centralized shared-memory and distributed-memory multiprocessors are described along with communication architectures like distributed shared memory and message passing. Challenges with parallel processing include limited parallelism in programs and high latency of remote access.

1. Multiprocessors and Thread-Level Parallelism Introduction “ The blueprints for our UltraSPARC T2, the core design files and test suites, will be available to the open source community, via its most popular license: the GPL.” Sun President Jonathan Schwartz (2007)‏

5. Centralized Shared-memory Multiprocessor

6. Distributed-memory Multiprocessor

9. Thank you! Author: Prof. Sergio Takeo, Marcelo Arbore. Bibliography: Patterson, D. A.; Hennessy, J. L. Computer Architecture: A Quantitative Approach, 4 th Ed. Morgan Kaufmann Publishers. “ The blueprints for our UltraSPARC T2, the core design files and test suites, will be available to the open source community, via its most popular license: the GPL.” Sun President Jonathan Schwartz (2007)‏