CS 258 Parallel Computer Architecture Lecture 5 Routing. February 6, 2002 Prof John D. Kubiatowicz http://www.cs.berkeley.edu/~kubitron/cs258. Recall: Multidim Meshes and Tori. d -dimensional array n = k d-1 X ...X k O nodes described by d -vector of coordinates (i d-1 , ..., i O )
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CS 258 Parallel Computer ArchitectureLecture 5Routing
February 6, 2002
Prof John D. Kubiatowicz
correct dimensions in order
TopologyDegreeDiameterAve DistBisectionD (D ave) @ P=1024
1D Array2N-1N / 31huge
2D Mesh42 (N1/2 - 1)2/3 N1/2N1/263 (21)
2D Torus4N1/21/2 N1/22N1/232 (16)
k-ary n-cube2nnk/2nk/4nk/415 (7.5) @n=3
Hypercuben =log Nnn/2N/210 (5)
6 x 3 x 2
ave dist = d (k-1)/2
What do we know?