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Abstract : |
The 1990s will be the era of scalable computers. By giving up uniform memory access, computers can be built that scale over a range of several thousand. These provide high peak announcedperformance (PAP), by using powerful, distributed CMOS microprocessor-primary memory pairs interconnected by a high perfor-mance switch (network). The parameters that determine these structures and their utility include: whether hardware (a multiprocessor) or software (a multi-computer) is used to maintain a distributed, or shared virtual memory (DSM) environment; the power of computing nodes (these improve at 60 % per year); the size and scalability of the switch; distributability (the ability to connect to geographically dispersed computers including workstations); and all forms of software to exploit their inherent parallelism. To a great extent, viability is determined by a computer's generality-the ability to efficiently handle a range of work that requires varying processing (from serial to fully parallel), memory, and 110 resources. A taxonomy and evolutionary time line outlines the next decade of computer evolution, included distributed workstations, based on scalability and parallelism. Workstations can be the best scalables. KEY WORDS: Scalable multiprocessors and multicomputers; massive parallelism; distributed or shared virtual memory; high performance computers; computer architecture. 1., |
