• International journal of advanced smart convergence
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• v.11 no.1
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• pp.28-35
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• 2022

This paper presents a performance evaluation of real-time Linux for industrial real-time platforms. On industrial platforms, multicore processors are popular due to their work distribution efficiency and cost-effectiveness. Multicore processors, however, are not designed for applications with real-time constraints, and their performance capabilities depend on their core configurations. In order to assess the feasibility of a multicore processor for real-time applications, we conduct a performance evaluation of a general processor and a low-power processor to provide an experimental environment of real-time Linux on both Xenomai and RT-preempt considering the multicore configuration. The real-time performance is evaluated through scheduling latency and in an environment with loads on the CPU, memory, and network to consider an actual situation. The results show a difference between a low-power and a general-purpose processor, but from developer's point of view, it shows that the low-power processor is a proper solution to accommodate low power situations.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.12 no.6
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• pp.175-180
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• 2012

In order to overcome the complexity and performance limit problems of superscalar processors, the multicore architecture has been prevalent recently. The configuration and the size of instruction and data caches greatly gives effect on the performance of multicore processors. Using SPEC 2000 benchmarks as input, the trace-driven simulation has been performed for the 2-core to 16-core architectures with different sizes of caches extensively. As a result, the 2-way set associative instruction and data cache with the size of 64KB brought the best cost-effective performance.

• Journal of the Korean institute of surface engineering
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• v.41 no.5
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• pp.205-213
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• 2008

A 3D particle code is developed to analyze electron behavior in a planar magnetron sputtering cathode either in balanced or unbalanced configuration. Three types of collisions are included; electron - neutral elastic, excitation to a metastable state and ionization. Flight path is calculated by a 4-th order Runge-Kutta method with a time step of 10 ps. Effects of electron starting position, magnetic field intensity and configuration were analyzed. For a more efficient and accurate modeling, multithreading technique is considered for multicore CPU computers. Under an assumption of cold ion approach, target erosion profiles are predicted for a flat target surface.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.3
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• pp.111-117
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• 2018

Heterogeneous multi-core environment integrated with different functional cores is the powerful tool for the embedded system that became more complex and diverse. Specialized application requires one chip solution with different operating system over different cores. But this heterogeneity causes difficult configuration of the development environment, makes hard to develop and test software. We show the environment of heterogeneous multi-core processing can be mapped to symmetric multi-core environment. We construct Linux based RPMsg for the data exchange between processes similar with the heterogeneous multi-core RPMsg and experiment that the proposed environment can be used to reduce the steps of the heterogeneous multi-core application development. With this simplification, we suggest simulation method for easy development and debugging the heterogeneous multicore environment that makes complex steps to simple.