John M. Borkenhagen

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IBM’s NorthStar superscalar RISC microprocessor integrates high-bandwith and short pipe depth with low latency and zero cycle branch mispredict penalty into a fully scalable 64-bit PowerPC-compatible symmetric multiprocessor (SMP) implementation. Based on PowerPC architecture, the first in the Star Series of microprocessors, the NorthStar processor contains(More)
This paper describes the microarchitecture of the RS64 IV, a multithreaded PowerPC processor, and its memory system. Because this processor is used only in IBM iSeries and pSeries commercial servers, it is optimized solely for commercial server workloads. Increasing miss rates because of trends in commercial server applications and increasing latency of(More)
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