Debugging after a run crashes
The best way to find out the reason for a crash is to visualize the surface velocity with ACE/xmvis6. Usually you'll see some large/noisy velocity somewhere, which may give you some hints on forcing etc.
Sometimes you want to visualize the problem right before the crash. You cannot use autocombine_MPI_elfe.pl as the last stack of output is incomplete. But you can use the core FORTRAN combine script (e.g., combine_output6) to directly combine an incomplete stack. Just follow the instruction in the header of combine_output6.f90 to prepare the inputs and run. Then visualize the combined outputs with xmvis6.