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#37810 - 01/29/20 04:47 PM Random Seeds
EArtikis Online   content
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Registered: 06/01/16
Posts: 24
In versions of CHARMM above c40a does one have to actually specify a random seed? I haven't used the iseed command for my simulations but when I check my output all of my trials indicate a different random seed. Is this something that CHARMM does by default? The documentation states:

About the seeds:
The use of fixed seeds is discouraged for production runs so
by default the system clock provides an initial seeds for the

But I just want to make sure that I don't have to specify a random seed in order for the simulation to begin with a random seed (and that there isn't a fixed random seed assigned).

#37811 - 01/29/20 05:01 PM Re: Random Seeds [Re: EArtikis]
rmv Online   content

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Registered: 09/17/03
Posts: 8419
Loc: 39 03 48 N, 77 06 54 W
Yes, by default a different random seed is used each time, derived from the system clock.
Rick Venable
computational chemist


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