[QE-users] manual choosing random_seed

Mpayami mpayami at aeoi.org.ir
Wed Jun 11 06:53:36 CEST 2025


I noticed the comment by Han Hsu proposing possible replacement of itime(5) in the formula
https://lists.quantum-espresso.org/pipermail/users/2023-August/050785.html
 .
iseed = ( itime(8) + itime(6) ) * ( itime(7) + itime(4) )
Another option could be adding the entry for "iseed in the &ions tab
MP


----- Original Message -----

From: Mpayami via users (users at lists.quantum-espresso.org)
Date: 11/06/2025 02:09
To: users at lists.quantum-espresso.org
Subject: [QE-users] manual choosing random_seed


Dear QE users and developers,
I would like to use an arbitrary random_seed to initialize an MD run.
I went through the file Modules/random_numbers.f90 and it seems by default the code uses the system entropy (date, time, . . .).
How can I manage it?
Any comments is highly appreciated.
Best regards,
Mahmoud Payami
AEOI, Tehran, Iran

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