hdf5 files are in portable format, one per k-point, independent upon the number of processors and the kind of parallelization.

prefix.wfc* files are in nonportable binary format, one per processor, depend upon the number of processors and the kind of parallelization.

For reasons that is too long to explain, calculations that use SCF wavefunctions read then from "portable" format and re-write them to "non-portable" format. It's a little bit dumb and actually unnecessary in most cases.

Paolo

On 28/03/2024 08:04, Abdul Muhaymin via users wrote:
Hello all,

After a spin-polarized scf calculation, I have several files such as wfcup#.hdf5, wfcdw#hdf5 etc inĀ in outdir/prefix.save. The number of the files are equal to the 2*number of k points. However, after nscf calculation, I am getting more data files in the outdir (not in outdir/prefix.save). I have N number of prefix.wfc* files where N is the number of processor I used. What is the difference between these two type of files? Are they both wavefunction? If I delete them, will there be any problem?

Sincerely,
Abdul Muhaymin,
Graduate student,
Bilkent University, Ankara.
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Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,
Univ. Udine, via delle Scienze 206, 33100 Udine Italy, +39-0432-558216
_______________________________________________
The Quantum ESPRESSO community stands by the Ukrainian
people and expresses its concerns about the devastating
effects that the Russian military offensive has on their
country and on the free and peaceful scientific, cultural,
and economic cooperation amongst peoples
_______________________________________________
Quantum ESPRESSO is supported by MaX (www.max-centre.eu)
users mailing list users@lists.quantum-espresso.org
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