EPW Forum

Dear,
I am using EPW to interpolate the electron-phonon matrix. The system I am studying contains two atoms. The k-mesh for the non-self-consistent field (nscf) calculation is 24×24×1, and the q-mesh for the phonon calculation is 12×12×1. The number of Wannier functions (num_wann) as well as nbndsub are 8, and the inner energy window includes five bands. The EPW calculation breaks after the step "Calculating kgmap", with the last output context as shown below.
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Construct the Wigner-Seitz cell using Wannier centers and atomic positions
Number of WS vectors for electrons 1801
Number of WS vectors for phonons 173
Number of WS vectors for electron-phonon 330
Maximum number of cores for efficient parallelization 660
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The error message reads:
"prterun noticed that process rank 95 with PID 6263 on node user exited on signal 9 (Killed)."
Could anyone explain why the software terminated unexpectedly?

The issue has been resolved by changing the etf_mem parameter from 0 to 1, after which EPW began functioning normally. Both QE and EPW were compiled with AMD AOCC, which causes EPW to fail to return reliable information when it malfunctions.