Research on the Multiscalar execution model was introduced in the early 1990's, recognizing the inadequacies of relying entirely on Instruction Level Parallelism (ILP). The goal was to augment the parallelism bridgehead established by ILP with the ground forces of Thread-Level Parallelism (TLP), a coarser form of parallelism. Many studies on parallelism indeed confirm the significant performance potential of executing multiple threads of a program in parallel. The difficulties that have been plaguing the parallelization of ordinary, non-numeric programs for decades have been complex flows of...

Multiscalar Processors presents a comprehensive treatment of the basic principles of Multiscalar execution, and advanced techniques for implementing the Multiscalar concepts. Special emphasis is placed on highlighting the major challenges involved in Multiscalar processing. This book is organized into nine chapters, and provides an excellent synopsis of a large body of research carried out on multiscalar processors in the last decade. It starts with technology trends that provide an impetus to the development of multiscalar processors and shape the development of future...