- Fast Algorithm Comparisons (comment by Jingfang Huang) Unfortunately, references on comparisons of these packages are "almost" non-existent. Which algorithm to use depends on the particles distribution, the requested accuracy, the allowed memory allocation, etc. For example, if memory is a big problem while you don't care about efficiency, try direct method. If the particle distributed uniformly, and the number of particles is reasonable, try FFT based methods such as the particle mesh Ewald or pFFT.
- Reverse Communications Interface (comment by Jingfang Huang) This is an interesting and useful feature from SparseKit.
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