Hello I vaguely remember to have read on this list that as of some QE version (I think 4.3.x) MPI-parellel phonon calculations on distributed memory machines are no longer supported. I did not find anything in the Phonon code's user guide or the release notes. Anyway, I have a some input which runs with 4.2.1, but not with 4.3.2. Havent tested 5.0.1 yet. So what's the situation? Is it now generally recomended to split q-points (and irreps) and run each on a SMP machine? Thank you.
best, Steve -- Steve Schmerler Institut f?r Theoretische Physik TU Bergakademie Freiberg Leipziger Str. 23, 09599 Freiberg, Germany