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The S/390 G5, the latest generation IBM mainframe system, more than doubles the performance of its predecessor. The microprocessor used in the system is a sophisticated CISC processor that features a large cache and a very high clock frequency to achieve excellent performance. We discuss the microarchitecture of the processor followed by a description of how this processor is integrated into the system. Finally, we consider the state-of-the-art reliability and availability features that make this mainframe system unique.
Timothy J. Slegel, Robert M. Averill III, Mark A. Check, Bruce C. Giamei, Barry W. Krumm, Christopher A. Krygowski, Wen H. Li, John S. Liptay, John D. MacDougall, Thomas J. McPherson, Jennifer A. Navarro, Eric M. Schwarz, Kevin Shum, Charles F. Webb, "IBM's S/390 G5 Microprocessor Design", IEEE Micro, vol. 19, no. , pp. 12-23, March/April 1999, doi:10.1109/40.755464
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