Re: question and NAMD operation

From: Chris Harrison (
Date: Wed Aug 29 2012 - 15:45:39 CDT

Patrick Chiu <> writes:
> Date: Wed, 29 Aug 2012 13:19:36 -0700 (PDT)
> From: Patrick Chiu <>
> To:
> Subject: namd-l: question and NAMD operation
> X-Mailer: YahooMailClassic/15.0.8 YahooMailWebService/
> Dear Officers:
> I have the following error in my NAMD operation:
> Reason: FATAL ERROR: Periodic cell has become too small for original patch grid!Possible solutions are to restart from a recent checkpoint,
> increase margin, or disable useFlexibleCell for liquid simulation.
> My question is how can I prevent this problem?
> Your sincerely,
> NAMD user
> See Hong Chiu


This question has been discussed several times in the past. You can
find more information by searching the namd-l list archives. Try
beginning with this entry from 2008:


Chris Harrison, Ph.D.
NIH Center for Macromolecular Modeling and Bioinformatics
Theoretical and Computational Biophysics Group
Beckman Institute for Advanced Science and Technology
University of Illinois, 405 N. Mathews Ave., Urbana, IL 61801       Voice: 773-570-6078               Fax:   217-244-6078

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