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- W3025953350 abstract "This paper considers the parallel numerical simulation of the time evolution of galaxies and globular clusters on GPUs. The model used is the Einstein–Vlasov system, which is designed, in particular, to study the formation of black holes and spacetime singularities in a general relativistic framework.First, a reference implementation is derived using NVIDIA CUDA as programming model, which is then optimized in several steps. Bottlenecks are identified by profiling, and different approaches, namely particle sort, improved treatment of atomic operations, and kernel fusion are investigated to overcome these bottlenecks. Each optimized variant is evaluated in relation to the other variants using detailed runtime experiments and profiling results. Using in the order of 107 to 108 particles, speedups between 1.84 and 2.38 w.r.t. the reference implementation have been observed." @default.
- W3025953350 created "2020-05-21" @default.
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- W3025953350 date "2020-03-01" @default.
- W3025953350 modified "2023-09-26" @default.
- W3025953350 title "Implementation and Optimization of a 1D2V PIC Method for Nonlinear Kinetic Models on GPUs" @default.
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- W3025953350 doi "https://doi.org/10.1109/pdp50117.2020.00012" @default.
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