Craig A. Lee, E. Coe, J. Clark, J. Stepanek, K. Bellman, C. Raghavendra
{"title":"Time management in active networks","authors":"Craig A. Lee, E. Coe, J. Clark, J. Stepanek, K. Bellman, C. Raghavendra","doi":"10.1109/AMS.2001.993720","DOIUrl":"https://doi.org/10.1109/AMS.2001.993720","url":null,"abstract":"Investigates time management for distributed simulations in active networks. Time management is essentially the computation of the lower-bound time stamp (LBTS) across federates in a distributed simulation, including in-transit (in-flight) messages. We show that LBTS computation is an instance of the distributed termination detection (DTD) problem and how DTD algorithms can be applied to the LBTS in an active network. These algorithms are potentially much more efficient than traditional algorithms that rely on point-to-point communication. We demonstrate the potential of the \"distinguished root node\" algorithm, which can compute the LBTS in O(log n) time in general network topologies using a prototype implemented in Java. While active network algorithms have the potential for improved functionality and superior performance, this potential will only be realized when \"native\" implementations are possible. For wide-scale deployment, real-world issues, such as reliable delivery, dynamic routing topologies, security and fault tolerance, have to be systematically addressed.","PeriodicalId":134986,"journal":{"name":"Proceedings Third Annual International Workshop on Active Middleware Services","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127733615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Taylor, Xingfu Wu, J. Geisler, X. Li, Z. Lan, M. Hereld, I. Judson, R. Stevens
{"title":"Prophesy: automating the modeling process","authors":"V. Taylor, Xingfu Wu, J. Geisler, X. Li, Z. Lan, M. Hereld, I. Judson, R. Stevens","doi":"10.1109/AMS.2001.993715","DOIUrl":"https://doi.org/10.1109/AMS.2001.993715","url":null,"abstract":"Performance models provide significant insight into the performance relationships between an application and the system, either parallel or distributed, used for execution. The development of models often requires significant time, sometimes in the range of months, to develop; this is especially the case for detailed models. This paper presents our approach to reducing the time required for model development. We present the concept of an automated model builder within the Prophesy infrastructure, which also includes automated instrumentation and extensive databases for archiving the performance data. In particular, we focus on the automation of the development of analytical performance models. The concepts include the automation of some well-established techniques, such as curve fitting, and a new technique that develops models as a composition of other models of core components or kernels in the application.","PeriodicalId":134986,"journal":{"name":"Proceedings Third Annual International Workshop on Active Middleware Services","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132645673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Active brokers and their runtime deployment in the ECho/JECho distributed event systems","authors":"Dong Zhou, Yuan Chen, G. Eisenhauer, K. Schwan","doi":"10.1109/AMS.2001.993721","DOIUrl":"https://doi.org/10.1109/AMS.2001.993721","url":null,"abstract":"This paper introduces active brokers and third-party derivation, which is the basic programming construct for run-time remote broker deployment, in the ECho/JECho distributed event systems. We describe its implementation in the JECho system and give examples of using it in ECho/JECho distributed event systems. In particular, we describe the use of third-party derivation in supporting the scalability of content-based event delivery. Specifically, third-party derivation is used both to dynamically construct content-based event distribution trees and to offload potentially expensive client-specific event routing/processing by the run-time creation of remote brokers. Our preliminary benchmark results demonstrate the significant benefits of using third-party derivation.","PeriodicalId":134986,"journal":{"name":"Proceedings Third Annual International Workshop on Active Middleware Services","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133986129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}