On 10/05/2011 3:10 AM, Justin A. Lemkul wrote:


ITHAYARAJA wrote:
Dear Sir

Greetings!

I am following every gromacs applications based on your manuals. I now get stuck in grompp -energy minimization step during generation of .tpr file for my ligand and protein. the error which i found is the following,


Ignoring obsolete mdp entry 'title'
Ignoring obsolete mdp entry 'cpp'

Back Off! I just backed up mdout.mdp to ./#mdout.mdp.5#

WARNING 1 [file em.mdp, line unknown]:
  Unknown or double left-hand 'coulomtype' in parameter file

Spelling is particularly important when dealing with literal-minded computers. You have to get it right.

Mark


checking input for internal consistency...
processing topology...
Opening library file /usr/share/gromacs/top/
ffG43a1.itp
Opening library file /usr/share/gromacs/top/ffG43a1nb.itp
Opening library file /usr/share/gromacs/top/ffG43a1bon.itp
Opening library file /usr/share/gromacs/top/ff_dum.itp
Generated 279 of the 1225 non-bonded parameter combinations

-------------------------------------------------------
Program grompp, VERSION 4.0.7
Source code file: ../../../../src/kernel/toppush.c, line: 947

Fatal error:
Atomtype CB not found
-------------------------------------------------------

Sir, I couldn't understand what did it refers to? So I kindly request you spare your little time from your busy schedule to solve this problem.


You're mixing and matching force fields. Atom type CB does not exist in Gromos96 43A1, it comes from the deprecated ffgmx force field.

-Justin

Thank you, Sir


--
**
Ithayaraja M,
Research Scholar,
Department of Bionformatics,
Bharathiar University,
Coimbatore 641 046,
Tamil Nadu
India



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