IEEE Parallel & Distributed Technology: Systems & Applications最新文献_第5页

Dedos: a distributed real-time environment Dedos:分布式实时环境

IEEE Parallel & Distributed Technology: Systems & Applications Pub Date : 1994-12-01 DOI: 10.1109/88.345962

D. Hammer, E. Luit, O. V. Roosmalen, P. V. D. Stok, J. Verhoosel

{"title":"Dedos: a distributed real-time environment","authors":"D. Hammer, E. Luit, O. V. Roosmalen, P. V. D. Stok, J. Verhoosel","doi":"10.1109/88.345962","DOIUrl":"https://doi.org/10.1109/88.345962","url":null,"abstract":"Until now, little research has been done on methods to combine the seemingly incompatible paradigms of hard and soft real-time systems. To this end, we have developed Dedos, a dependable distributed operating system. The driving forces behind the project are twofold: to meet the demand for dependable distributed control systems, especially in the area of embedded systems and industrial control; and to increase the productivity and quality of application programming for distributed control. Our current focus is on hard real-time issues; soft real-time needs are handled by conventional techniques. However, our work has raised interesting questions about the communication between the soft and hard real-time tasks of the system, which is necessary to pass externally specified control parameters and control status information. The problem is that the data set must always be consistent (concurrency atomicity), but hard real-time activities can never be delayed by soft real-time ones. Other intriguing questions are related to the integration of the reliability and security concepts that are used in the two parts of the systems. in this paper, however, we limit our discussion to the Dedos development model, the Dedos programming model, hard real-time scheduling, and the distributed algorithms needed to implement the Dedos execution environment.<<ETX>>","PeriodicalId":325213,"journal":{"name":"IEEE Parallel & Distributed Technology: Systems & Applications","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125690306","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: 30

Task Parallelism in a High Performance Fortran Framework 高性能Fortran框架中的任务并行性

IEEE Parallel & Distributed Technology: Systems & Applications Pub Date : 1994-09-01 DOI: 10.1109/M-PDT.1994.329791

T. Gross, D. O'Hallaron, J. Subhlok

引用次数: 110

Extending HPF for Advanced Data-Parallel Applications 为高级数据并行应用扩展HPF

IEEE Parallel & Distributed Technology: Systems & Applications Pub Date : 1994-09-01 DOI: 10.1109/M-PDT.1994.329803

B. Chapman, H. Zima, P. Mehrotra

引用次数: 87

Task Parallelism and High-Performance Languages 任务并行和高性能语言

IEEE Parallel & Distributed Technology: Systems & Applications Pub Date : 1994-09-01 DOI: 10.1109/M-PDT.1994.329794

Ian T Foster

{"title":"Task Parallelism and High-Performance Languages","authors":"Ian T Foster","doi":"10.1109/M-PDT.1994.329794","DOIUrl":"https://doi.org/10.1109/M-PDT.1994.329794","url":null,"abstract":"The definition of High Performance Fortran (HPF) is a significant event in the maturation of parallel computing: it represents the first parallel language that has gained widespread support from vendors and users. The subject of this paper is to incorporate support for task parallelism. The term task parallelism refers to the explicit creation of multiple threads of control, or tasks, which synchronize and communicate under programmer control. Task and data parallelism are complementary rather than competing programming models. While task parallelism is more general and can be used to implement algorithms that are not amenable to data-parallel solutions, many problems can benefit from a mixed approach, with for example a task-parallel coordination layer integrating multiple data-parallel computations. Other problems admit to both data- and task-parallel solutions, with the better solution depending on machine characteristics, compiler performance, or personal taste. For these reasons, we believe that a general-purpose high-performance language should integrate both task- and data-parallel constructs. The challenge is to do so in a way that provides the expressivity needed for applications, while preserving the flexibility and portability of a high-level language. In this paper, we examine and illustrate the considerations that motivate the use of task parallelism. We also describe one particular approach to task parallelism in Fortran, namely the Fortran M extensions. Finally, we contrast Fortran M with other proposed approaches and discuss the implications of this work for task parallelism and high-performance languages.","PeriodicalId":325213,"journal":{"name":"IEEE Parallel & Distributed Technology: Systems & Applications","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115934664","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: 44

Requirements for DataParallel Programming Environments 数据并行编程环境的要求

IEEE Parallel & Distributed Technology: Systems & Applications Pub Date : 1994-09-01 DOI: 10.1109/M-PDT.1994.329801

Vikram S. Adve, A. Carle, Elana D. Granston, S. Hiranandani, K. Kennedy, C. Koelbel, U. Kremer, J. Mellor-Crummey, S. Warren, C. Tseng

引用次数: 30

Automatic Detection of Parallelism: A grand challenge for high performance computing 并行性的自动检测:对高性能计算的巨大挑战

IEEE Parallel & Distributed Technology: Systems & Applications Pub Date : 1994-09-01 DOI: 10.1109/M-PDT.1994.329796

W. Blume, R. Eigenmann, J. Hoeflinger, D. Padua, Paul Petersen, Lawrence Rauchwerger, P. Tu

引用次数: 95

Exploiting data coherence to improve parallel volume rendering 利用数据一致性改进并行体绘制

IEEE Parallel & Distributed Technology: Systems & Applications Pub Date : 1994-06-01 DOI: 10.1109/88.311568

P. Mackerras, B. Corrie

引用次数: 17

Achieving superlinear speedup on a heterogeneous, distributed system 在异构、分布式系统上实现超线性加速

IEEE Parallel & Distributed Technology: Systems & Applications Pub Date : 1994-06-01 DOI: 10.1109/88.311573

C. Mechoso, J. Farrara, J. A. Spahr

{"title":"Achieving superlinear speedup on a heterogeneous, distributed system","authors":"C. Mechoso, J. Farrara, J. A. Spahr","doi":"10.1109/88.311573","DOIUrl":"https://doi.org/10.1109/88.311573","url":null,"abstract":"The CASA Gigabit Network Testbed, part of NSF and ARPA's Gigabit Project, is investigating whether a metacomputer consisting of widely distributed, heterogeneous supercomputers connected by a high-speed network is viable for large scientific applications. A particular challenge is to determine if such a metacomputer can produce superlinear speedup despite latency and communication overheads. One of the applications in the CASA testbed is a model we developed that couples a global atmosphere model to a world ocean model. Simulations using such coupled general circulation models for climate studies demand considerable computer resources. When distributing such a model, we need to consider the methods for masking latency with computation, the communications bandwidth requirements for different decomposition strategies, the optimal computer architecture for each major phase of the computation, and the effects of latency and communication costs for different decomposition strategies. Here we focus an the last two issues, and demonstrate that choosing the appropriate computer architectures and masking communication with computation can produce superlinear speedup.<<ETX>>","PeriodicalId":325213,"journal":{"name":"IEEE Parallel & Distributed Technology: Systems & Applications","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124394621","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: 26

ickp: a consistent checkpointer for multicomputers 用于多台计算机的一致检查指针

IEEE Parallel & Distributed Technology: Systems & Applications Pub Date : 1994-06-01 DOI: 10.1109/88.311574

J. Plank, Kai Li

引用次数: 123

Parallel polygon rendering for message-passing architectures 用于消息传递体系结构的并行多边形呈现

IEEE Parallel & Distributed Technology: Systems & Applications Pub Date : 1994-06-01 DOI: 10.1109/88.311569

T. Crockett, T. Orloff

引用次数: 24