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| Home > Publications database > Error Analysis and Parallel Scaling Study of a Parareal Parallel-in-Time Integration Algorithm for Particle-in-Fourier Schemes > print |
| 001 | 1049166 | ||
| 005 | 20260108204822.0 | ||
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| 037 | _ | _ | |a FZJ-2025-05249 |
| 082 | _ | _ | |a 510 |
| 100 | 1 | _ | |a Muralikrishnan, Sriramkrishnan |0 P:(DE-Juel1)195613 |b 0 |e Corresponding author |u fzj |
| 245 | _ | _ | |a Error Analysis and Parallel Scaling Study of a Parareal Parallel-in-Time Integration Algorithm for Particle-in-Fourier Schemes |
| 260 | _ | _ | |a Philadelphia, Pa. |c 2025 |b SIAM |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a We propose a parareal based time parallelization scheme in the phase-space for the particle-in-Fourier (PIF) discretization of the Vlasov–Poisson system used in kinetic plasma simulations. We use PIF with a coarse tolerance for the nonuniform fast Fourier transforms, or the standard particle-in-cell scheme, combined with temporal coarsening, as coarse propagators. This is different from the typical spatial coarsening of particles and/or Fourier modes for parareal, which are not possible or effective for PIF schemes. We perform an error analysis of the algorithm and verify the results numerically with Landau damping, two-stream instability, and Penning trap test cases in 3D-3V. We also implement the space-time parallelization of the PIF schemes in the open-source, performance-portable library IPPL and conduct scaling studies up to 1536 A100 GPUs on the JUWELS booster supercomputer. The space-time parallelization utilizing the parareal algorithm for the time parallelization provides up to 4–6 times speedup compared to spatial parallelization alone and achieves a push rate of around 1 billion particles per second for the benchmark plasma mini-apps considered. |
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| 588 | _ | _ | |a Dataset connected to CrossRef, Journals: juser.fz-juelich.de |
| 700 | 1 | _ | |a Speck, Robert |0 P:(DE-Juel1)132268 |b 1 |u fzj |
| 773 | _ | _ | |a 10.1137/24M1673097 |g p. S311 - S336 |0 PERI:(DE-600)1468391-X |p 311 - 336 |t SIAM journal on scientific computing |v n/a |y 2025 |x 1064-8275 |
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