Two FFT Tutorials #99
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Merge remote-tracking branch 'weiqun/fix_hip' into fftw
Fix the amrex path.
Co-authored-by: Andy Nonaka <AJNonaka@lbl.gov>
Co-authored-by: Andy Nonaka <AJNonaka@lbl.gov>
write out unshifted fft
…Also fixed shift and copy comments.
…lso fixed shift and copy comments.
…domain sizes cubic and non-cubic.
…isson solver that works with different grid size, domain size, and in 2 and 3d.
Final poisson
Fix fftw gpu
WeiqunZhang
approved these changes
Aug 3, 2023
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Two tutorials showing how to use fftw or cufft. The first tutorial takes an FFT of the dataset and writes to a plotfile. The second tutorial solves the Poisson equation using a spectral approach. The tutorials are "serial" in that the FFT is performed on a single-grid multifab on either one core or one GPU. Parallelization is future work. Thanks to @jclepelch for doing the heavy lifting for this PR.