could somebody tell me what this error means?

Message

cooki · #1 Post by **cooki** » Sun Jul 10, 2005 8:37 am

hi,everyone!

when i run a supercell using vasp4.6 on ibm sp3, the following error appear, i don't know this means what !
thank you!!

POSCAR found : 3 types and 108 ions

-----------------------------------------------------------------------------
| |
| ADVICE TO THIS USER RUNNING 'VASP/VAMP' (HEAR YOUR MASTER'S VOICE ...): |
| |
| You have a (more or less) 'large supercell' and for larger cells |
| it might be more efficient to use real space projection operators |
| So try LREAL=.TRUE. in the INCAR file. |
| Mind: If you want to do an extremely accurate calculations keep the |
| reciprocal projection scheme (i.e. LREAL=.FALSE.) |
| |
-----------------------------------------------------------------------------

WARNING: for PREC=h ENMAX is automatically increase by 25 %
this was not the case for versions prior to vasp.4.4
WARNING: for PREC=h ENMAX is automatically increase by 25 %
this was not the case for versions prior to vasp.4.4
WARNING: for PREC=h ENMAX is automatically increase by 25 %
this was not the case for versions prior to vasp.4.4
LDA part: xc-table for Ceperly-Alder, standard interpolation
Segmentation fault (core dumped)

cooki · #2 Post by **cooki** » Mon Jul 11, 2005 2:43 am

I am very confused by this error! ：Segmentation fault (core dumped) ，i don't know it means what!
I have tested many crystal structure calculation using vasp4.6 on ibm sp3 machine successfully.

#3 Post by **admin** » Mon Jul 11, 2005 11:51 am

Probably your memory is not large enough. Adjust the input parameters which
influcence the memory size (PREC, nr. of k-points,..)