[Pw_forum] segmentation fault

Paolo Giannozzi giannozz at nest.sns.it
Wed Aug 23 23:03:01 CEST 2006

On Thursday 17 August 2006 00:34, Vivek Ranjan wrote:

> I am running a job. The programme stops in the first scf iteration without
> any error message and writes the following on the stdout :
> Traceback for process 387481(msp mode, ssp 2) apid 387481.0 on node 0
>      cegterg_para at cegterg_+0x1578 (0x1059118) at cegterg.f90
>                   cegterg_+0x0488 (0x10657A8) at :127
>         c_bands_k at c_bands_+0x235C (0x103F61C) at :707
>                   c_bands_+0x04B4 (0x10413D4) at :105
>                 electrons_+0x1814 (0x112E0F4) at :269
>                     pwscf_+0x074C (0x1003A2C) at pwscf.f90:105
> Fault: Attempt to dereference null pointer: 0x0
> Segmentation fault
> Can someone please suggest what could be the problem ?

since you have such a nice traceback, please locate the line where
the error occurs. It looks like a deallocation of something that is not
allocated. It shouldn't be difficult to understand why

Paolo Giannozzi             e-mail:  giannozz at nest.sns.it
Scuola Normale Superiore    Phone:   +39/050-509876, Fax:-563513 
Piazza dei Cavalieri 7      I-56126 Pisa, Italy

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