VASP 6.4.3 produces oversized/corrupted WAVECAR

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


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muhammadsufyan_razman
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VASP 6.4.3 produces oversized/corrupted WAVECAR

#1 Post by muhammadsufyan_razman » Mon Jun 01, 2026 2:29 pm

Dear all,

I am encountering a strange issue with WAVECAR files generated by VASP 6.4.3 on our national cluster and would appreciate any suggestions.

Issue:
Using the same VASP input files, I obtain dramatically different WAVECAR sizes on two clusters (national and local):

1. VASP 6.4.3 on our National cluster --> 31G May 19 00:44 WAVECAR
1 F= -.34948932E+03 E0= -.34948932E+03 d E =-.349489E+03 mag= 0.0002

2. VASP 6.4.2 on our local university cluster --> 6.8G May 19 02:02 WAVECAR
1 F= -.34948931E+03 E0= -.34948931E+03 d E =-.349489E+03 mag= 0.0002

Both HPCs use the same compiler/numerical libraries and MPI.
1) gcc 2) tbb/2021.13 3) compiler-rt/2024.0.2 4) mkl/2024.0 5) mpi/2021.14

The total energy of the system remains the same, but the WAVECAR file generated by VASP 6.4.3 is significantly larger and cannot be read by any postprocessing script to unfold the band structure.
Any help with this issue would be greatly appreciated.

Best,
Sufyan


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