Dear Dr. Andrea, Thanks a lot for your help, it was very useful! I've paid attention and ran the pw.x calculation imposing non-symmetries.
It is good to hear that the Epsilon.x code was updated. Is there a possibility of getting the newer version of it, before the inclusion in the official distribution? "epsilon.x should be fast enough, though" It really is. My problem is with the pw.x. I had to reduce the energy convergency threshold considerably, being imposed on increase the wave function energy cutoff to preserve S-Matrix positivity. Therefore, even for a small system, the computation time grew. My last attempt was conv_thres=1e-14, the next step will be 1e-15. Any suggestions, shortcuts? Cheers. Anibal
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