On Dec 8, 2008, at 13:58 , loc duong ding wrote: > I get a strange error when running pw.x. The error is: [...] > mpiexec_master: mpd_uncaught_except_tb handling this falls into the category "strange MPI errors". There are explanations in the user guide and in the faq. Paolo --- Paolo Giannozzi, Democritos and University of Udine, Italy