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Porting the OPATM-BFM Application to a Grid e-Infrastructure – Optimization of Communication and I/O Patterns

100%

Cheptsov A. , Dichev K. , Keller R. , Lazzari P. , Salon S.

tom Vol. 15, nr 1

9-19

OPATM-BFM is an off-line three-dimensional coupled eco-hydrodynamic simulation model used for biogeochemical and ecosystem-level predictions. This paper presents the first results of research activities devoted to the adaptation of the parallel OPATMBFM application for an efficient usage in modern Grid-based e-Infrastructures. For the application performance on standard Grid architectures providing generic clusters of workstations, such results are important. We propose a message-passing analysis technique for communication-intensive parallel applications based on a preliminary application run analysis. This technique was successfully used for the OPATM-BFM application and allowed us to identify several optimization proposals for the current realization of the communication pattern. As the suggested improvements are quite generic, they can be potentially useful for other parallel scientific applications.

Modernization of the stamping process using eddy current and load sensors in the manufacturing of automotive parts

86%

Skardžius J. , Nagurnas S. , Skačkauskas P.

tom Vol. 26, no. 3

art. no. 189453

In this research, an experimental study is presented, which extends the usage of eddy current and load sensors in progressive stamping tools to optimize and continuously monitor the stamping process. The purpose of the research was to automatically detect material scrap before it leaves imprints on the part and based on the sensor’s readings, determine the optimal tool bottom position. The scrap thickness that needs to be detected was established in an experiment by visual evaluation of the result. To determine the optimal bottom position, a linear regression method was used, and the results were evaluated by part quality parameter. The research results consist of separate detection steps and the conclusion was made only after the serial type production. Overall results of scrap detection were influenced by the design of the existing tool. The bottom position detection consists of various readings interpretations and multi-step method descriptions. Based on the acquired results of both methods, implementing the in–die sensors was considered successful and applicable to new tools.

Lean Manufacturing – przepis na sukces

86%

Lebitko T.

tom R. 16, nr 11

30--32

Od czasu, kiedy wydano słynną książkę The Machine That Changed the World Womacka i Jonesa, minęło 20 lat. W publikacji zaprezentowano wyniki kilkuletnich badań, dokumentujących przewagę modelu Lean nad modelem produkcji masowej. W przełomowych latach 90. ub.w. książka stała się objawieniem i wydawało się, że sukces filozofii Lean będzie szybki i spektakularny. Jednak ta metoda zarządzania wciąż nie jest powszechnie stosowana, chociaż efekty, które przynosi, robią wrażenie na największych światowych koncernach. Tym bardziej warto przyjrzeć się z bliska sposobom jej implementacji na przykładzie BorgWarner Cooling Systems – niemieckiej firmy z sektora automotive.

Efficient Programming and Optimization of Parallel Applications for Cluster Systems

86%

Becker-Lemgau U.

tom Vol. spec. issue

7-11

Designing parallel applications and parallelizing sequential applications for cluster systems require powerful development tools to achieve scalable, reliable and highly efficient applications. The Intel Cluster Toolkit offers a toolset for development of MPI based applications and enables the developer to build, analyze, and optimize the parallel application. This article will describe the basic functionality and use of these tools.