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New solutions to a multi-objective benchmark problem of induction heating: an application of computational biogeography and evolutionary algorithms

100%

Di Barba P. , Dughiero F. , Sieni E. , Mognaschi M. E. , Forzan M.

Evaluation of Open-Source Linear Algebra Libraries targeting ARM and RISC-V Architectures

81%

Fibich C. , Tauner S. , Rössler P. , Horauer M.

tom Vol. 21

663--672

Basic Linear Algebra Subprograms (BLAS) has emerged as a de-facto standard interface for libraries providing linear algebra functionality. The advent of powerful devices for Internet of Things (IoT) nodes enables the reuse of existing BLAS implementations in these systems. This calls for a discerning evaluation of the properties of these libraries on embedded processors. This work benchmarks and discusses the performance and memory consumption of a wide range of unmodified open-source BLAS libraries. In comparison to related (but partly outdated) publications this evaluation covers the largest set of opensource BLAS libraries, considers memory consumption as well and distinctively focuses on Linux-capable embedded platforms (an ARM-based SoC that contains an SIMD accelerator and one of the first commercial embedded systems based on the emerging RISC-V architecture). Results show that especially for matrix operations and larger problem sizes, optimized BLAS implementations allow for significant performance gains when compared to pure C implementations. Furthermore, the ARM platform outperforms the RISC-V incarnation in our selection of tests.

Numerical benchmarks for topology optimization of structures with stress constraints

81%

Fiuk G. , Mrzygłód M. W.

tom Vol. 69, nr 6

art. no. e139317

Modern industry requires an increasing level of efficiency in a lightweight design. To achieve these objectives, easy-to-apply numerical tests can help in finding the best method of topological optimization for practical industrial applications. In this paper, several numerical benchmarks are proposed. The numerical benchmarks facilitate qualitative comparison with analytical examples and quantitative comparison with the presented numerical solutions. Moreover, an example of a comparison of two optimization algorithms was performed. That was a commonly used SIMP algorithm and a new version of the CCSA hybrid algorithm of topology optimization. The numerical benchmarks were done for stress constraints and a few material models used in additive manufacturing.

Trwałość reperów w aspekcie długookresowych pomiarów przemieszczeń obiektu

72%

Gadomska M. , Gadomski J.

tom nr 10

54--55

The article deals with the problems connected with the arrangement and durability of bench marks used for measurements of vertical displacements of objects. There have been presented objects on which long term measurements of displacements were performed. Although there are different causes of poor durability, it is primarily the effect of insufficient knowledge as to how to mark the determined displacements.