RE: NAMD on 64 bit windows 2007

From: Richard Owczarzy (
Date: Fri Dec 04 2009 - 14:53:42 CST


I assume that you downloaded NAMD binary for Windows from the web site.

Can I assume that you included path to NAMD in system variables? Can you
check the path in command prompt?


I did not bother to do that.

The NAMD2.exe binary is a small file, so I copy it with every

(1) I would copy it to some empty directory and add input files there.

(2) I would start command prompt (cmd) in Windows7 and change the
current directory to that directory.

(3) Run "DIR" to verify that NAMD is there.

(4) start simulation, e.g. NAMD2.EXE +p2 input.conf > output.dat


"p2" indicates the number of processors/threads

input.conf - your input file

output.dat - show results of simulations


This works for me in Windows XP and Windows 2000 32-bit. However,
windows7 has this "UAC" stuff that prevents much software from running,
so power users just run away to Linux..... Do you get any UAC prompt?





From: [] On
Behalf Of Priyan Amaras
Sent: Friday, December 04, 2009 1:23 PM
Subject: namd-l: NAMD on 64 bit windows 2007


Dear All,

I bought a computer with 64 bit windows 2007 for running NAMD. But, I
could not run NAMD. It says "namd2 is not recognized as internal or
external command...". I have included NAMD in the system variables too.
Does anyone know the solution?. Any help will be greatly appreciated.

Thank you,


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