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A New Compilation Flow for Software-Defined Radio Applications on Heterogeneous MPSoCs

ACM TRANSACTIONS ON ARCHITECTURE AND CODE OPTIMIZATION 2016年第2期13卷 19-19页

作者： Dardaillon, Mickael Marquet, Kevin Risset, Tanguy Martin, Jerome Charles, Henri-Pierre Univ Lyon INRIA INSA Lyon CITI INRIA Lyon France Univ Grenoble Alpes CEA LETI Minatec Campus Grenoble France Natl Instruments Corp 11500 N Mopac Expy Austin TX 78759 USA CITI 6 Ave Arts F-69621 Villeurbanne France CEA Minatec Campus17 Rue Martyrs F-38054 Grenoble France

The advent of portable software-defined radio (SDR) technology is tightly linked to the resolution of a difficult problem: efficient compilation of signal processing applications on embedded computing devices. Modern wireless communication protocols use packet processing rather than infinite stream processing and also introduce dependencies between data value and computation behavior leading to dynamic dataflow behavior. Recently, parametric dataflow has been proposed to support dynamicity while maintaining the high level of analyzability needed for efficient real-life implementations of signal processing computations. This article presents a new compilation flow that is able to compile parametric dataflow graphs. Built on the LLVM compiler infrastructure, the compiler offers an actor-based C++ programming model to describe parametric graphs, a compilation front end for graph analysis, and a back end that currently matches the Magali platform: a prototype heterogeneous MPSoC dedicated to LTE-Advanced. We also introduce an innovative scheduling technique, called microscheduling, allowing one to adapt the mapping of parametric dataflow programs to the specificities of the different possible MPSoCs targeted. A specific focus on FIFO sizing on the target architecture is presented. The experimental results show compilation of 3GPP LTE-Advanced demodulation on Magali with tight memory size constraints. The compiled programs achieve performance similar to handwritten code.

关键词： Dataflow programming model heterogeneous MPSoC compiler scheduling software-defined radio

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A systematic design method for green buildings based on the combined system of flexible solar cells and reactors on buildings

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BUILDING AND ENVIRONMENT 2022年 209卷 108657-108657页

作者： Bai, Jitao Zhang, Simiao Liang, Jiahe Zhao, Yanlong Li, Weiyi Diao, Yu Shang, Dongfan Tianjin Univ Dept Civil Engn Tianjin 300072 Peoples R China Tianjin Univ Key Lab Coast Civil Struct Safety Minist Educ Tianjin 300072 Peoples R China Tianjin Univ Coll Intelligence & Comp Tianjin 300072 Peoples R China Tianjin Univ Sch Architecture Tianjin 300072 Peoples R China Tianjin Univ Sch Chem Engn & Technol Tianjin 300072 Peoples R China Tianjin Univ Sch Math Tianjin 300072 Peoples R China Hebei Acad Bldg Res Co Ltd Hebei 050021 Peoples R China

Reactors on buildings (RB) can achieve carbon sequestration through photoelectrocatalytic reaction to effectively control the carbon emission of buildings, while flexible solar cells (FSCs) can realize self-sufficiency in energy consumption of buildings without affecting their exteriors. It is supposed that they can be assembled together on building surface to achieve the ultra-low energy consumption and ultra-low carbon emission of buildings. Based on principles in solid geometry, calculation method for solar radiation on random spatial surface is proposed, and the programming model for the assembly of RB and FSCs on building surface targeted by environmental effect and economic benefit is established based on their working characteristics. Then a comprehensive programming model considering both environmental effect and economic benefit is established. Subsequently, main parameters in comprehensive programming model are analyzed through virtual experiment conducted on computers with input data available for Guangzhou, China, and the approximate equation of the curve of assembly ratio with weight as well as the concept of function characterization of buildings are proposed. Meanwhile, the equation that can be used to predict the assembly ratio of FSCs based on photoelectrocatalytic efficiency is established. All these studies provide a systematic method for the combined application of RB and FSCs in buildings.

关键词： Reactors on buildings (RB) Flexible solar cells (FSCs) Green buildings Solar radiation programming model Virtual experiment

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Hierarchical message passing through a ProActive/GCM based runtime

Hierarchical message passing through a ProActive/GCM based r...

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作者： Mathias, Elton Nicoletti

In the past several years, grid computing has emerged as a way to harness computing resources geographically distributed across multiple organizations. Due to its inherently largely distributed and heterogeneous nature, grid computing has enlarged the importance of specific requirements, such as scalability, performance and the need of an adequate programming model. Several programming models have been proposed for grid programming. Nonetheless, so far, none of them met all the requirements. Differently, in the field of high performance cluster computing, the message passing model became a true standard with a large number of libraries and legacy applications. This work proposes a hybrid framework that combines the high performance and high acceptability of the MPI standard boosted with intuitive extensions to enable developers to design grid applications or "gridify" existing ones with the flexibility of a component-based runtime modeling resources hierarchy and offering support to inter-cluster communication. The proposed solution relies on the addition of new MPI communicators and a related API, which may offer a support well-suited to programmers used to MPI in order to reflect a hierarchical topology within the deployed application. Carlo Simulation, a Mergesort and a Poissond3D solver) have shown that the "gridification" of applications improve application performance on grid environments. Even if the goal is not to compete against existing MPI distributions, the performance of the solution is comparable with MPI performance, even better in some cases. From the results obtained in the evaluation of this prototype, we conclude that the overhead introduced by the components is not negligible, but inside of the expected. However, we can expect the benefits to grid applications to bypass the generated overhead. Besides, the extended interface may offer users the adequate abstractions to design parallel algorithms in a hierarchical way addressing grid environments

关键词： Processamento paralelo Parallel programming Component-oriented programming Computação em grade programming model Mpi Grid programming Messsage passing MPI Dissertação

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Method and application of dynamic comprehensive evaluation

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Xitong Gongcheng Lilun yu Shijian/System Engineering Theory and Practice 2007年第10期27卷 154-158页

作者： Guo, Ya-Jun Yao, Yuan Yi, Ping-Tao School of Business Administration Northeastern University Shenyang 110004 China

Decreasing dimensions is key of dynamic comprehensive evaluation problems, which turns multidimensional time series to 2-dimensional data. This paper extends the ordered weighted averaging (OWA) operator to aggregating data in dynamic comprehensive evaluation problems and presents two new operator (time ordered weighted averaging (TOWA) operator and time ordered weighted geometric averaging (TOWGA) operator). Then, two new methods are presented, which are twice-weighted evaluation and prefix comprehensive evaluation. And the paper introduces mathematical programming model in order to solve TOWA and TOWGA weights (time weights). Finally, a numerical example was given to illustrate the effectiveness of the proposed method.

关键词： dynamic comprehensive evaluation TOWA operator TOWGA operator programming model

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ReTiF: A declarative real-time scheduling framework for POSIX systems

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JOURNAL OF SYSTEMS ARCHITECTURE 2021年 118卷 102210-102210页

作者： Serra, Gabriele Ara, Gabriele Fara, Pietro Cucinotta, Tommaso Scuola Super Sant Anna Via Moruzzi 1 I-56124 Pisa Italy

This paper proposes a novel framework providing a declarative interface to access real-time process scheduling services available in an operating system kernel. The main idea is to let applications declare their temporal requirements or characteristics without knowing exactly which underlying scheduling algorithms are offered by the system. The proposed framework can adequately handle such a set of heterogeneous requirements configuring the platform and partitioning the requests among the available multitude of cores, so to exploit the various scheduling disciplines that are available in the kernel, matching application requirements in the best possible way. The framework is realized with a modular architecture in which different plugins handle independently certain real-time scheduling features. The architecture is designed to make its behavior customization easier and enhance the support for other operating systems by introducing and configuring additional plugins.

关键词： Real-time systems Scheduling programming model Linux

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BarMan: A run-time management framework in the resource continuum

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SUSTAINABLE COMPUTING-INFORMATICS & SYSTEMS 2022年 35卷

作者： Zanella, Michele Sciamanna, Filippo Fornaciari, William Politecn Milan DEIB Milan Italy

Over the last years, the number of IoT devices has grown exponentially, highlighting the current Cloud infrastructure limitations. In this regard, Fog and Edge computing began to move part of the computation closer to data sources by exploiting interconnected devices as part of a single heterogeneous and distributed system in a computing continuum viewpoint. Since these devices are typically heterogeneous in terms of performance, features, and capabilities, this perspective should encompass programming models and run-time management layers. This work presents and evaluates the BarMan open-source framework by implementing a Fog video surveillance use-case. BarMan leverages a task-based programming model combined with a run-time resource manager and the novel BeeR framework to deploy the application's tasks transparently. This enables the possibility of considering aspects related to the energy and power dissipated by the devices and the single application. Moreover, we developed a task allocation policy to maximize application performance, considering run-time aspects, such as load and connectivity, of the time-varying available devices. Through an experimental evaluation performed on a real cluster equipped with heterogeneous embedded boards, we evaluated different execution scenarios to show the framework's functionality and the benefit of a distributed approach, leading up to an improvement of 66% on the frame processing latency w.r.t. a monolithic solution.

关键词： Fog computing Resource management programming model Task allocation strategy

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IoT Delegate: Smart Home Framework for Heterogeneous IoT Service Collaboration

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KSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS 2016年第8期10卷 3958-3971页

作者： Kum, Seung Woo Kang, Mingoo Park, Jong-Il Hanyang Univ Dept Comp & Software Seoul South Korea Hanshin Univ Dept IT Contents Osan Si Gyeonggi Do South Korea Korea Elect Technol Inst Smart Media Res Ctr Sungnam South Korea

With Internet of Things (IoT) technology, home environment becomes smarter than ever. Not only smart devices such as smart phone or smart TV, but also various IoT devices including sensor, smart thermostat, and smart scale has now become very common on the market. These devices have connectivity to the Internet, so that user can read data from the device or control the device using Internet technology. However, due to diversity of smart home requirements, device collaboration in smart home remains a challenging task still. Usually smart home is built with various technologies to fulfill its own purpose, and these purposes cover very wide area from controlling low-power sensor devices to controlling high-performance devices like smart TV and smart phone. This variety of smart home requirements makes smart home very complicated due to mixed network architecture, protocol and technology. In this paper, a framework to enable managing and collaborating heterogeneous IoT devices in smart home environment is proposed. Several programming models are defined in the proposed framework to make application development for heterogeneous devices more intuitive. The proposed framework has been implemented as a web service, and a case study with real-world smart home IoT devices is presented.

关键词： Heterogeneous Device Network Application-level Collaboration programming model

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An Iterated Greedy Algorithm for a Parallel Machine Scheduling Problem with Re-entrant and Group Processing Features

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TEHNICKI VJESNIK-TECHNICAL GAZETTE 2023年第4期30卷 1241-1252页

作者： Yuan, Shuaipeng Wang, Bailin Li, Tike Univ Sci & Technol Beijing Sch Econ & Management Beijing 100083 Peoples R China

This research paper addresses a novel parallel machine scheduling problem with re-entrant and group processing features, specifically motivated by the hot milling process in the modern steel manufacturing industry. The objective is to minimize the makespan. As no existing literature exists on this problem, the paper begins by analyzing the key characteristics of the problem. Subsequently, a mixed integer linear programming model is formulated. To tackle the problem, an improved iterated greedy algorithm (IGA) is proposed. The IGA incorporates a problem-specific heuristic to construct the initial solution. Additionally, it incorporates an effective destruction and reconstruction procedure. Furthermore, an acceptance rule is developed to prevent the IGA from getting stuck in local optima. The proposed approach is evaluated through computational experiments. The results demonstrate that the proposed IGA outperforms three state-of-the-art meta-heuristics, highlighting its high effectiveness. Overall, this research contributes to the understanding and solution of the parallel machine scheduling problem with re-entrant and group processing features in the context of the hot milling process. The proposed algorithm provides insights for practical applications in the steel manufacturing industry.

关键词： group processing iterated greedy algorithm parallel machine scheduling programming model re-entrant

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Associating synchronization constraints with data in an object-oriented language

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ACM SIGPLAN NOTICES 2006年第1期41卷 334-345页

作者： Vaziri, M Tip, F Dolby, J IBM Corp Thomas J Watson Res Ctr Yorktown Hts NY 10598 USA

Concurrency-related bugs may happen when multiple threads access shared data and interleave in ways that do not correspond to any sequential execution. Their absence is not guaranteed by the traditional notion of "data race" freedom. We present a new definition of data races in terms of 11 problematic interleaving scenarios, and prove that it is complete by showing that any execution not exhibiting these scenarios is serializable for a chosen set of locations. Our definition subsumes the traditional definition of a data race as well as high-level data races such as stale-value errors and inconsistent views. We also propose a language feature called atomic sets of locations, which lets programmers specify the existence of consistency properties between fields in objects, without specifying the properties themselves. We use static analysis to automatically infer those points in the code where synchronization is needed to avoid data races under our new definition. An important benefit of this approach is that, in general, far fewer annotations are required than is the case with existing approaches such as synchronized blocks or atomic sections. Our implementation successfully inferred the appropriate synchronization for a significant subset of Java's Standard Collections framework.

关键词： languages theory concurrent object-oriented programming data races serializability programming model

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Tapping into the fountain of CPUs - On operating system support for programmable devices

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ACM SIGPLAN NOTICES 2008年第3期43卷 179-188页

作者： Weinsberg, Yaron Dolev, Danny Anker, Tal Ben-Yehuda, Muli Wyckoff, Pete Hebrew Univ Jerusalem IL-91905 Jerusalem Israel

The constant race for faster and more powerful CPUs is drawing to a close. No longer is it feasible to significantly increase the speed of the CPU without paying a crushing penalty in power consumption and production costs. Instead of increasing single thread performance, the industry is turning to multiple CPU threads or cores (such as SMT and CMP) and heterogeneous CPU architectures (such as the Cell Broadband Engine). While this is a step in the right direction, in every modern PC there is a wealth of untapped compute resources. The NIC has a CPU;the disk controller is Programmable;some high-end graphics adapters are already more powerful than host CPUs. Some of these CPUs can perform some functions more efficiently than the host CPUs. Our operating systems and programming abstractions should be expanded to let applications tap into these computational resources and make the best use of them. Therefore, we propose the HYDRA framework, which lets application developers use the combined power of every compute resource in a coherent way. HYDRA is a programming model and a runtime support layer which enables utilization of host processors as well as various Programmable peripheral devices' processors. We present the framework and its application for a demonstrative use-case, as well as provide a thorough evaluation of its capabilities. Using HYDRA We were able to cut down the development cost of a system that uses multiple heterogenous compute resources significantly.

关键词： design experimentation offloading operating systems programming model

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