VASP gives an "FFTMPI: Increase NMAXM to 4608" message and exits

Problems running VASP: crashes, internal errors, "wrong" results.


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lowsfer
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VASP gives an "FFTMPI: Increase NMAXM to 4608" message and exits

#1 Post by lowsfer » Thu Apr 26, 2012 7:43 am

I was doing some calculations on a slab model to find out the proper thickness for the slab. When I increases the number of atoms from 60 to 68, VASP gave me this error then exited.

I have made it sure with "diff" command that all other files (INCAR, KPOINTS, POTCAR) are unchanged. I only made the z-vector longer and added 8 more atoms.

Could anyone tell me how to fix this problem? Thanks.
Last edited by lowsfer on Thu Apr 26, 2012 7:43 am, edited 1 time in total.

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VASP gives an "FFTMPI: Increase NMAXM to 4608" message and exits

#2 Post by admin » Thu Apr 26, 2012 3:54 pm

please change the parameter NMAXM in the fftw3d you use to the suggested value and re-compile vasp
Last edited by admin on Thu Apr 26, 2012 3:54 pm, edited 1 time in total.

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