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Rock: A High-Performance Sparc CMT Processor
March/April 2009 (vol. 29 no. 2)
pp. 6-16
Shailender Chaudhry, Sun Microsystems
Robert Cypher, Sun Microsystems
Magnus Ekman, Sun Microsystems
Martin Karlsson, Sun Microsystems
Anders Landin, Sun Microsystems
Sherman Yip, Sun Microsystems
Håkan Zeffer, Sun Microsystems
Marc Tremblay, Sun Microsystems

Rock, Sun's third-generation chip-multithreading processor, contains 16 high-performance cores, each of which can support two software threads. Rock uses a novel checkpoint-based architecture to support automatic hardware scouting under a load miss, speculative out-of-order retirement of instructions, and aggressive dynamic hardware parallelization of a sequential instruction stream. It is also the first processor to support transactional memory in hardware.

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Index Terms:
system architectures, integration and modeling, processor architectures, multithreaded processors, multicore/single-chip multiprocessors, parallel architectures, speculative multithreading
Citation:
Shailender Chaudhry, Robert Cypher, Magnus Ekman, Martin Karlsson, Anders Landin, Sherman Yip, Håkan Zeffer, Marc Tremblay, "Rock: A High-Performance Sparc CMT Processor," IEEE Micro, vol. 29, no. 2, pp. 6-16, March-April 2009, doi:10.1109/MM.2009.34
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