Abstract
Physically meaningful simulations in plasma physics and astrophysics need powerful hybrid supercomputers equipped with computation accelerators. The development of parallel numerical codes for such supercomputers is a complex scientific problem. In order to solve it the concept of codesign is employed. The codesign is defined as considering the architecture of the supercomputer at all stages of the development of the code. The use of codesign is shown by the example of two physical problems: the interaction of an electron beam with plasma and the collision of galaxies. The efficiency is 92 % with 500 Tesla GPUs at the Lomonosov supercomputer. The test computation involved 160 million of model particles.
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