Note the size of the crossbar. It scales with an increasing number of cores, as it requires $ n^2 $ connections.
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papamix
Even though crossbars are considered to be one of the least scalable network topologies, there has been recent work (both by industry and academia) that have looked at scaling crossbar designs to a large number of endpoints. This includes new chip fabrication and packaging technologies (http://labs.oracle.com/projects/sedna/Papers/SC08.pdf), as well as architectural and layout optimizations (http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=06171053). As you will see later in the Interconnection Networks lecture, the major benefits of the crossbar topology are that it offers very high performance (high throughput, internally non-blocking) and uniform and low latency.
Note the size of the crossbar. It scales with an increasing number of cores, as it requires $ n^2 $ connections.
This comment was marked helpful 0 times.
Even though crossbars are considered to be one of the least scalable network topologies, there has been recent work (both by industry and academia) that have looked at scaling crossbar designs to a large number of endpoints. This includes new chip fabrication and packaging technologies (http://labs.oracle.com/projects/sedna/Papers/SC08.pdf), as well as architectural and layout optimizations (http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=06171053). As you will see later in the Interconnection Networks lecture, the major benefits of the crossbar topology are that it offers very high performance (high throughput, internally non-blocking) and uniform and low latency.
This comment was marked helpful 0 times.