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Algorithms and average time bounds of sorting on a mesh-connected computer

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2 Author(s)
Qian Ping Gu ; Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada ; Jun Gu

We give three new parallel sorting algorithms on a mesh-connected computer with wraparound connections (i.e. a torus). These three algorithms, with the minimum queue size of 1, sort n2 random input data items into a blocked snakelike row major order, a row major order, and a snakelike row major order, in 1.5n+o(n), 2n+o(n), and 2n+o(n) average steps, respectively. These results improve the previous results of 2n+o(n), 2.5n+o(n), and 2.5n+o(n), respectively. In addition, we prove that the distance bound n on a torus is an average-time lower bound independent of indexing schemes of sorting random input data items on it

Published in:

IEEE Transactions on Parallel and Distributed Systems  (Volume:5 ,  Issue: 3 )