Dear All,
Thank you all for your kind reply.
>From all of your reply, I understood one could not know negative frequency
while the phonon program is running till it's end whether it is running in
parallel mode or in serial mode. I also understand one has to take
precautions while running phonon calculation like reducing convergence
value than normal and doing the phonon calculation for any specific q-point.
I will run the program as you all suggested and report to the forum.
Thank you
Yours Sincerly,
A.Suresh,
Research Scholar,
School of Physics,
Madurai Kamaraj University,
Madurai.
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