[gmx-users] Alkane in water system simulation - TraPPE force field - Error: "Incorrect number of atomtypes for dihedral (4 instead of 2 and 4)"
peter.stern at weizmann.ac.il
Mon Nov 16 10:52:30 CET 2015
I would start my removing the last unconnected line (l. 35) from forcefield.itp and try again.
From: gromacs.org_gmx-users-bounces at maillist.sys.kth.se [gromacs.org_gmx-users-bounces at maillist.sys.kth.se] on behalf of Shantanu Singh [singhshantanu01 at gmail.com]
Sent: Monday, November 16, 2015 10:50
To: gromacs.org_gmx-users at maillist.sys.kth.se
Subject: [gmx-users] Alkane in water system simulation - TraPPE force field - Error: "Incorrect number of atomtypes for dihedral (4 instead of 2 and 4)"
Ignore the last mail.
So I am doing my B.Tech thesis on studying the diffusion coefficients of
alkanes at infinite dilution in water.
I am using TraPPE-UA model for alkanes and TIP4P/2005 representation for
water solvent. The problem is pretty simple but the simulations don't seem
I am currently working on ethane (C2H4).
When I try to run grompp for EM, I get the following error message -
number of atomtypes for dihedral (4 instead of 2 or 4)”. *
I figured there was something wrong with the topology file but nothing
seems out of place.
This is the link to the detailed error report and all other required files
The command line I am using is :
grompp -f minim.mdp -c ethane.gro -p ethane.top -o em.tpr
It would be great if you could find the time to have a look at it and help
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