Hi Friends,I am trying to optimize a supercell using vc-relax. In a first
step, I used the space group to optimize one unit cell which gives a reasonable
cell volume. Later, when I tried using same unit cell to optimize a supercell
using ibrav = 14, unit cell volume keeps on shrinking and finally ends up with
an error "Not enough space allocated for radial FFT: try restarting with a
larger cell_factor". I tried to increase the cell factor to 4, but it does
not seem to work. Would be thankful for any suggestion on it. Also, curious to
know that why this problem appears only when I am using ibrav = 14, and not
when I am setting space group ? ThanksAmar
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