TY - GEN

T1 - All-to-all personalized exchange algorithms in generalized shuffle-exchange networks

AU - Chou, Well Y.

AU - Chen, Richard B.

AU - Chen, Chiuyuan

PY - 2009/7/23

Y1 - 2009/7/23

N2 - All-to-all personalized exchange (ATAPE) occurs in many parallel applications. Previous ATAPE algorithms were mainly developed for hypercube, mesh, and torus networks. Recently, Yang and Wang [8] and also Massini [4] proposed an alternative approach to ATAPE by using multistage interconnection networks (MINs); they proposed new ATAPE algorithms for a class of unique-path, self-routable MINs (for example, baseline, shuffle-exchange (or omega), banyan network, and the reverse networks of these networks). However, the algorithms in [4] and [8] require that the given MIN must have unique-path property and satisfy N = 2n, in which N is the number of inputs (outputs) and n is the number of stages in the MIN. In [5], Padmanabhan proposed the generalized shuffle-exchange network (GSEN), which allows N to be any even number. Since the GSEN is not a unique-path MIN, the algorithms in [4] and [8] do not work on it. The purpose of this paper is to consider ATAPE in MINs without unique-path property. To our knowledge, no one has studied ATAPE in this type of MINs. We prove that under stage control technique, ATAPE algorithms for GSENs require at least 2n rounds. We propose an algorithm which uses a variation of stage control and works for all N ≡ 2 (mod 4). We will prove that our algorithm takes N rounds and therefore is optimal.

AB - All-to-all personalized exchange (ATAPE) occurs in many parallel applications. Previous ATAPE algorithms were mainly developed for hypercube, mesh, and torus networks. Recently, Yang and Wang [8] and also Massini [4] proposed an alternative approach to ATAPE by using multistage interconnection networks (MINs); they proposed new ATAPE algorithms for a class of unique-path, self-routable MINs (for example, baseline, shuffle-exchange (or omega), banyan network, and the reverse networks of these networks). However, the algorithms in [4] and [8] require that the given MIN must have unique-path property and satisfy N = 2n, in which N is the number of inputs (outputs) and n is the number of stages in the MIN. In [5], Padmanabhan proposed the generalized shuffle-exchange network (GSEN), which allows N to be any even number. Since the GSEN is not a unique-path MIN, the algorithms in [4] and [8] do not work on it. The purpose of this paper is to consider ATAPE in MINs without unique-path property. To our knowledge, no one has studied ATAPE in this type of MINs. We prove that under stage control technique, ATAPE algorithms for GSENs require at least 2n rounds. We propose an algorithm which uses a variation of stage control and works for all N ≡ 2 (mod 4). We will prove that our algorithm takes N rounds and therefore is optimal.

UR - http://www.scopus.com/inward/record.url?scp=67650692103&partnerID=8YFLogxK

U2 - 10.1109/ICN.2009.58

DO - 10.1109/ICN.2009.58

M3 - Conference contribution

AN - SCOPUS:67650692103

SN - 9780769535524

T3 - Proceedings of the 8th International Conference on Networks, ICN 2009

SP - 185

EP - 190

BT - Proceedings of the 8th International Conference on Networks, ICN 2009

Y2 - 1 March 2009 through 6 March 2009

ER -