Google Research

The Cray XT4 and Seastar 3-D Torus Interconnect

  • Dennis Abts
Encyclopedia of Parallel Computing, Springer (2011)


The Cray XT4 system is a distributed memory multiprocessor combining an aggressive superscalar processor (AMD64) with a bandwidth-rich 3-D torus interconnection network that scales up to 32K processing nodes. This chapter provides an overview of the Cray XT4 system architecture and a detailed discussion of its interconnection network.

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