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• W3133148792 abstract "We describe a novel, scalable approach for scientific visualization in HPC environments, based on the ray tracing engine Intel® OSPRay associated with VisIt. Part of the software stack of the Leibniz Supercomputing Centre, this method has been applied to the visualization of the largest simulations of interstellar turbulence ever performed, produced on SuperMUC-NG. The hybrid (MPI + Threading Building Blocks) parallelization of OSPRay and VisIt allows efficient scaling up to about 150 thousand cores, making it possible to visualize the data at the full, unprecedented resolution of 1004 8 3 grid elements (about 23 TB per snapshot). Besides presenting the method, its HPC context and future developments, we describe the implications of our visualization in the considered science case: our work brilliantly showcases the stretching-and-folding mechanisms through which astrophysical processes drive turbulence and amplify the magnetic field in the interstellar gas, and how the first structures, the seeds of newborn stars are shaped by this process. We finally observe the similarities between ray tracing and other HPC numerical techniques used in astrophysics, anticipating increasing convergences in the near future. • Scalable visualization on HPC supercomputers. • Raytracing with VisIt and Intel oneAPI Rendering Toolkit. • Large-scale scientific visualization in astrophysics. • The World’s largest turbulence simulation." @default.
• W3133148792 created "2021-03-01" @default.
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• W3133148792 date "2021-05-01" @default.
• W3133148792 modified "2023-09-26" @default.
• W3133148792 title "Visualizing the world’s largest turbulence simulation" @default.
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• W3133148792 doi "https://doi.org/10.1016/j.parco.2021.102758" @default.
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