Dear all,<br>I am doing slab relaxation (surface) calculations on IBM bluegene machine. For certain cell sizes, the calculations go very fine but for some others, it stops after doing the first scf run and then calculating forces and the new atomic positions, ie, it stops while 'Writing output data file pwscf.save'. The status shows that the calculation is running but it doesn't do anything. Could somebody tell me why does it this happen and how can it be fixed? I am using 3.2.3 version. <br>
<br>Many Thanks,<br>Pushpa Raghani<br>Stanford University<br>