CISE Research Instrumentation: Application and Evaluation of a Low Cost Parallel Processing Platform

9617271威斯康星大学拉吉夫大学麦迪逊分校沙拉萨尼·苏雷什·阿格拉瓦尔研究仪器：低成本并行处理平台的应用和评估这项研究仪器赠款使威斯康星大学麦迪逊分校的电气和计算机工程系能够购买3台12端口异步传输模式(ATM)交换机和9台个人计算机，以支持实时、多媒体和并行计算应用方面的不同研究项目。以下研究项目将从该仪器中受益：-ATM网络中的流量管理-ATM网络上的并行计算-台式ATM网络上的分布式多媒体计算-服务质量保证对于这些应用，将使用该设备评估提供服务质量保证的几种流量管理策略。这些策略结合了准入控制、监管、调度和基于反馈的流量控制等机制。如果不同的虚电路具有不同的带宽，则基于ATM的工作站网络可能会导致并行应用的性能下降。并行计算的研究项目使用这些设备来开发技术，以研究和缓解大型并行应用程序中的这种性能下降。对于诸如视频会议的多媒体应用，当前的视频编码方案经常导致网络流量的突然、频繁的波动，从而导致网络资源的低效利用。将开发一个低成本的视频会议应用程序，以评估现有和新兴视频编码算法的有效性。该设备对于调查上述研究项目中制定的竞争战略的所有方面都至关重要，包括性能、复杂性和实施的简易性。实验验证的结果将证明基于ATM的网络是否为支持不同应用的可行平台。

9617271 Chalasani, Suresh Agrawal, Rajeev University of Wisconsin-Madison CISE Research Instrumentation: Application and Evaluation of a Low Cost Parallel Processing Platform This research instrumentation grant enables the Department of Electrical and Computer Engineering at the University of Wisconsin-Madison to purchase three 12-port Asynchronous Transfer Mode (ATM) switches and nine personal computers to support distinct research projects on real-time, multimedia and parallel computing applications. The following research projects will benefit from this instrumentation: - Traffic Management in ATM Networks - Parallel Computing on ATM Networks - Distributed Multi-media Computing on a Desktop ATM Network - Quality of Service Guarantees to Real-Time Message Streams For these applications, several traffic management strategies to provide quality of service guarantees will be evaluated using this equipment. These strategies combine mechanisms such as admission control, policing, scheduling, and feedback-based flow control. ATM-based networks of workstations may cause performance degradation for parallel applications, if different virtual circuits have unequal bandwidths. The research projects on parallel computing use the equipment to develop techniques for studying and alleviating this performance degradation in large parallel applications. For multimedia applications such as video conferencing, current video coding schemes often cause abrupt, frequent fluctuation of network traffic rendering inefficient use of network resources. A low cost video conferencing application will be developed to evaluate the effectiveness of present and emerging video coding algorithms. The equipment is crucial for investigating all aspects of competing strategies developed in the above research projects including performance, complexity, and ease of implementation. The results from the experimental validation will demonstrate whether or not ATM-based networks are viable platforms for su pporting diverse applications.