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Content available remote Computer Simulation of the Dynamic Behavior of Double Polymer Brush-Solvent Systems
Hałagan K., Banaszak M., Jung J., Polanowski P., Sikorski A.
Computational Methods in Science and Technology
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2021
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Vol. 27, No. 4
141--149
EN
Opposing polymer brush systems were investigated by computer simulations. In a coarse-grained model, chains were restricted to a face-centered cubic lattice with the excluded volume interactions only. The macromolecules were grafted onto two parallel impenetrable surfaces. The dynamic properties of these systems were studied by means of Monte Carlo simulations. The Dynamic Lattice Liquid model and a highly efficient parallel machine ARUZ were employed, which enabled studying large systems at long time scales. The influence of the surface grating density on the system dynamic was shown and discussed. It was demonstrated that the self-diffusion coefficient of solvent depended strongly on the grafting density.
2
Content available remote Technology of Real-World Analyzers (TAUR) and its practical application
Jung J., Kiełbik R., Hałagan K., Polanowski P., Sikorski A.
Computational Methods in Science and Technology
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2020
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Vol. 26, No. 3
69--75
EN
The article describes the most important details of the project for reconfigurable construction of dedicated electronic machines intended for performing analyses of phenomena that occur in multi-component systems containing at least several million mutually interacting elements. Devices built in the presented technology can be characterized by the use of reconfigurable integrated circuits, spatial construction ensuring scalability, a redundant panel system as well as specially developed data transmission and work control systems. Machines work in a parallel manner and can solve problems in various fields of science and technology by competing with the speed of data processing with the latest supercomputing systems. As an example, we present details of the ARUZ machine containing 26,000 FPGAs, which was made using this technology.
3
Content available remote From the Dynamic Lattice Liquid Algorithm to the Dedicated Parallel Computer – mDLL Machine
Jung J., Kiełbik R., Rudnicki K., Hałagan K., Polanowski P., Sikorski A.
Computational Methods in Science and Technology
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2018
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Vol. 24, No. 4
235--247
EN
The designing, production and testing of the mDLL machine led to the development of such a structure in which operational cells (e.g. KDLL) were located in the nodes of a three-dimensional torus network and the device was scalable. Thus, the future expansion of this device with additional Printed Circuit Boards (PCB) will not result in lengthened wire connections between Field-Programmable Gate Arrays (FPGA) or slow down the operation of the machine. The conducted tests confirmed the correctness of the adopted design assumptions and showed that by using mDLL one can effectively perform molecular simulations. Despite some structural shortcomings, the mDLL machine was a prototype that has already been sufficiently tested to allow the technology used in it to be used to build a device with a number of 1 million to 5 million KDLL cells. Such a device would already be suitable for simulating multi-particle systems with unprecedented speed.
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