Home > CSSS Seminars > Michael McCracken and Xiaofeng Gao   Michael McCracken and Xiaofeng Gao Department of Computer Science University of California San Diego http://www.cs.ucsd.edu/~mmccrack http//www.cs.ucsd.edu/users/xgao The Cray X1 Architecture This past November, Cray announced the X1, a vector supercomputer that incorporates many interesting new ideas, as the response to NEC SX6. We have been very interested in this new architecture and have spent some time to gather information about it. In this talk, we will share what we have learned about this machine. We will discuss the current status and future plans for the Cray X1,including how Cray plans to achieve petaflops performance by 2008 using the X1 architecture. We will introduce the basic architecture designs and discuss software currently available, along with some plans for future software support. More interestingly, we will present performance data measured for various subsystems, including the floating point unit, memory system, and communication system. We will also show comparisons of the Cray X1, IBM SP, and NEC SX6 on various benchmarks to highlight the effects of architecture difference on performance.
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