Decomposition of Fourier Grids

[YE-FEI LI]

Dear CP2K developers and users:
    Thanks for your attention. I saw a document online "CP2K: parallel 
algorithms". This document introduces that the FFT grid can be decomposed 
in 1-D (<256 core) and 2-D (>256 core). Is it possible for me to force cp2k 
decompose the FFT grid in 2-D for less than 256 core? Further more, it 
seems that in 1-D, the FFT grids is decomposed along x-axis, am I correct~?
Best
Yefei
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