Proceedings of the 1997 International Conference on Parallel Processing (Cat. No.97TB100162)最新文献

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Optimal multicast with packetization and network interface support 具有分组和网络接口支持的最佳组播
R. Kesavan, D. Panda
{"title":"Optimal multicast with packetization and network interface support","authors":"R. Kesavan, D. Panda","doi":"10.1109/ICPP.1997.622668","DOIUrl":"https://doi.org/10.1109/ICPP.1997.622668","url":null,"abstract":"Modern networks typically limit the size of the largest packet for efficient communication. Thus, long messages are packetized and transmitted. Such networks also provide network interface support for nodes, which typically includes a coprocessor and memory, to implement the lower layers of the communication protocol. This paper presents a concept of smart network interface support for packetization and an optimal multicast algorithm for systems with such support. Two implementations of smart network interface, First-Child-First-Served (FCFS) and First-Packet-First-Served (FPFS), are studied and compared. It is shown that the FPFS network interface support is more practical and efficient Next, the components of multicast latency under FPFS implementation are analyzed by using a pipelined model. A concept of k-binomial tree is introduced, and proved to be optimal for multicasting under the FPFS scheme. A method to construct contention-free k-binomial trees on contention-free orderings of the nodes is presented. For a 64-node system with irregular network, simulation results indicate that the optimal k-binomial tree is up to 2 times better than the conventional binomial tree for a range of multicast set sizes and message lengths. Thus, these results demonstrate significant potential to be applied to current and future generation high performance systems including MPPs and NOWs, where network interface support for multicast is provided.","PeriodicalId":221761,"journal":{"name":"Proceedings of the 1997 International Conference on Parallel Processing (Cat. No.97TB100162)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132014019","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}
引用次数: 29
False sharing elimination by selection of runtime scheduling parameters 通过选择运行时调度参数消除错误共享
Jyh-Herng Chow, Vivek Sarkar
{"title":"False sharing elimination by selection of runtime scheduling parameters","authors":"Jyh-Herng Chow, Vivek Sarkar","doi":"10.1109/ICPP.1997.622672","DOIUrl":"https://doi.org/10.1109/ICPP.1997.622672","url":null,"abstract":"False sharing can be a source of significant overhead on shared-memory multiprocessors. Several program restructuring techniques to reduce false sharing have been proposed in past work. In this paper, we propose an approach for elimination of false sharing based solely on selection of runtime schedule parameters for parallel loops. This approach leads to more portable code since only the schedule parameters need to be changed to target different multiprocessors. Also, the guarantee of elimination (rather than reduction) of false sharing in a parallel loop can significantly reduce the bookkeeping overhead in some memory consistency mechanisms. We present some preliminary experimental results for this approach.","PeriodicalId":221761,"journal":{"name":"Proceedings of the 1997 International Conference on Parallel Processing (Cat. No.97TB100162)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130599898","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}
引用次数: 15
An optimal multiple bus network for fan-in algorithms 扇入算法的最优多总线网络
H. Dharmasena, R. Vaidyanathan
{"title":"An optimal multiple bus network for fan-in algorithms","authors":"H. Dharmasena, R. Vaidyanathan","doi":"10.1109/ICPP.1997.622566","DOIUrl":"https://doi.org/10.1109/ICPP.1997.622566","url":null,"abstract":"We consider a class of algorithms called fan-in algorithms, with numerous applications in problems involving semigroup operations. We present a multiple bus network (MBN) that runs any fan-in algorithm in optimal number of steps. The degree and loading of this MBN are each 3. We prove that the product of the degree and loading of any MBN that runs a fan-in algorithm in optimal time is at least 9. This establishes the proposed MBN to be optimal.","PeriodicalId":221761,"journal":{"name":"Proceedings of the 1997 International Conference on Parallel Processing (Cat. No.97TB100162)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130803319","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}
引用次数: 5
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