ACS: An adaptive communication system for heterogeneous wide-area ATM clusters |
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Authors: | Sung-Yong Park Salim Hariri |
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Institution: | (1) Department of Computer Science, Sogang University, Seoul, 121-742, Korea;(2) Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ 85721, USA |
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Abstract: | This paper presents an architecture, implementation, and performance evaluation of an adaptive message-passing system for
a heterogeneous wide-area ATM cluster that we call the Adaptive Communication System (ACS). ACS uses multithreading to provide
efficient techniques for overlapping computation and communication in wide-area computing. By separating control and data
activities, ACS eliminates unnecessary control transfers over the data path. This optimizes the data path and improves the
performance. ACS supports several different flow control algorithms, error control algorithms, and multicasting algorithms.
Furthermore, ACS allows programmers to select at runtime the suitable communication schemes per-connection basis to meet the
requirements of a given application. ACS provides three application communication interfaces: Socket Communication Interface
(SCI), ATM Communication Interface (ACI), and High Performance Interface (HPI) to support various classes of applications.
The SCI is provided mainly for applications that must be portable to many different computing platforms. The ACI provides
services that are compatible with ATM connection oriented services where each connection can be configured to meet the Quality
of Service (QOS) requirements of that connection. This allows programmers to fully utilize the benefits of the ATM network.
The HPI supports applications that demand low-latency and high-throughput communication services. In this interface, ACS uses
read/write trap routines to reduce latency and data transfer time, and to avoid using traditional communication protocols.
We analyze and compare the performance of ACS with those of other message-passing systems such as p4, PVM, and MPI in terms
of point-to-point, multicasting, and application performance. The benchmarking results show that ACS outperforms other message-passing
systems and provides flexible communication services for various classes of applications.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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