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As an application of interlaced bypass torus (iBT) interconnection networks, a 6D mesh/iBT network has been formed by replacing the 3D torus network in a 6D mesh/torus interconnect (Tofu) with a 3D iBT network, helping further reduce latencies. However, the routing algorithms good for the torus-based systems such as Blue Gene series may deadlock for the new network. This work proposes three deadlock-free...
A new 6D mesh/torus (Tofu) interconnect is implemented in the K Computer for achieving a performance of more than 10 petaflops. As expected, among its many interesting properties, such interconnect has large variations of latencies for communications within a node-group (intra-node-group) or between them (inter-node-group). Inspired by their works while recognizing the superior features of the recently...
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