[gmx-users] gen_seed

Justin Lemkul jalemkul at vt.edu
Sun Dec 1 16:12:43 CET 2013

On 12/1/13 9:45 AM, Mahboobeh Eslami wrote:
> Hi Dear Gmx Users
> what is the different between gen_seed= -1 and gen_seed=173529?

 From the manual:

"when gen-seed is set to -1, the seed is calculated from the process ID number."

The other is just a default value that has no particular significance.  Some 
people like to keep record of what the random seed was, hence setting a specific 
value.  With -1, you don't control what the value is, though whatever number was 
used should be written to mdout.mdp.

> what is the best for NVTequilibration?

There is no "best."  Any random number will do.



Justin A. Lemkul, Ph.D.
Postdoctoral Fellow

Department of Pharmaceutical Sciences
School of Pharmacy
Health Sciences Facility II, Room 601
University of Maryland, Baltimore
20 Penn St.
Baltimore, MD 21201

jalemkul at outerbanks.umaryland.edu | (410) 706-7441


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