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A real-time communication method for wormhole switching networks

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4 Author(s)
Byungjae Kim ; Access Network Res. Lab., Korea Telecom, Taejon, South Korea ; Jong Kim ; Sungje Hong ; Sunggu Lee

In this paper we propose a real-time communication scheme that can be used in general point-to-point real-time multicomputer systems with wormhole switching. Real-time communication should satisfy the two requirements of predictability and priority handling. Since traditional wormhole switching does not support priority handling which is essential in real-time computing, flit-level preemption is adopted in our wormhole switching. Also, we develop an algorithm to determine the message transmission delay upper bound to predict worst-case message delay. Simulation results show that the delay upper bounds calculated using the proposed algorithm are very close to actual average message transmission delays for messages with high priorities

Published in:

Parallel Processing, 1998. Proceedings. 1998 International Conference on

Date of Conference:

10-14 Aug 1998