[Pw_forum] Segmentation Fault

[Sefa Dag]

  Dear Sir,

When I run pw.x,  program can not run and  it gives "segmentation fault" 
error message.  In my small system, there are only 4 atoms. Beside of 
this I used very small cut-off  for trial.   Also I don't have a memory 
problem in my machine.  
Do I have to change some  "flags" during installation of PWSCF?
Can you help me about that?

Thank You
Sefa