FFT, FMM, or Multigrid? A comparative Study of State-Of-the-Art Poisson Solvers for Uniform and Nonuniform Grids in the Unit Cube · HackerPapers discussionshttps://hackerpaper.kaipfister.de/p/1408.6497/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMTFFT, FMM, or Multigrid? A comparative Study of State-Of-the-Art Poisson Solvers for Uniform and Nonuniform Grids in the Unit Cube — mentioned by mmorse1217https://news.ycombinator.com/item?id=32191398urn:hackerpapers:mention:1408.6497:32191398Fri, 22 Jul 2022 12:56:19 GMT<p>This implementation and associated paper improve the cache locality to make the algorithm more competitive https://github.com/dmalhotra/pvfmm They compare solving toy problems with different methods here https://arxiv.org/pdf/1408.6497.pdf But as you mention, this is just fiddling with constants, and it still may be too costly for your problem</p><p><a href="https://hackerpaper.kaipfister.de/p/1408.6497/">Paper and discussion history</a>. A mention is not an endorsement.</p>math.NA