Yao Yao wrote:
Hi Justin,

Thanks for your last reply. Now it seems that OPLS has known the atomtypes after I added those CA1, ... to ffoplsaanb.itp, but after I claim all the angles, dihedrals, ... in the ffoplsaabon.itp, it still gives errors like,

Back Off! I just backed up mdout.mdp to ./#mdout.mdp.2#
checking input for internal consistency...
processing topology...
Opening library file /share/apps/gromacs407/share/gromacs/top/ffoplsaa.itp
Opening library file /share/apps/gromacs407/share/gromacs/top/ffoplsaanb.itp
Opening library file /share/apps/gromacs407/share/gromacs/top/ffoplsaabon.itp
Generated 338253 of the 338253 non-bonded parameter combinations
Generating 1-4 interactions: fudge = 0.5
Generated 338253 of the 338253 1-4 parameter combinations

ERROR 1 [file cro.top, line 37]:
  No default Bond types


ERROR 2 [file cro.top, line 71]:
  No default Angle types


ERROR 3 [file cro.top, line 72]:
  No default Angle types


ERROR 4 [file cro.top, line 85]:
  No default Angle types


ERROR 5 [file cro.top, line 91]:
  No default Ryckaert-Bell. types


ERROR 6 [file cro.top, line 92]:
  No default Ryckaert-Bell. types


ERROR 7 [file cro.top, line 93]:
  No default Ryckaert-Bell. types


ERROR 8 [file cro.top, line 108]:
  No default Ryckaert-Bell. types


ERROR 9 [file cro.top, line 112]:
  No default Proper Dih. types


ERROR 10 [file cro.top, line 113]:
  No default Proper Dih. types


ERROR 11 [file cro.top, line 114]:
  No default Proper Dih. types

Opening library file /share/apps/gromacs407/share/gromacs/top/spc.itp
Opening library file /share/apps/gromacs407/share/gromacs/top/ions.itp
Excluding 3 bonded neighbours molecule type 'Protein'
Excluding 2 bonded neighbours molecule type 'SOL'
Excluding 2 bonded neighbours molecule type 'SOL'

NOTE 1 [file cro.top, line 142]:
  System has non-zero total charge: -1.022478e+00

This total charge suggests that your topology is badly broken.


processing coordinates...
double-checking input for internal consistency...
renumbering atomtypes...
converting bonded parameters...

There was 1 note

-------------------------------------------------------
Program grompp, VERSION 4.0.7
Source code file: grompp.c, line: 986

Fatal error:
There were 11 errors in input file(s)
-----------------------------------------------

I do double-check those bondtypes, angles, and interactions mentioned in the errors, and I am pretty sure I have already declared those values in the ffoplsaabon.itp. Is there any other file I also need to mention those values?


If these types were actually present in ffoplsaabon.itp, then you wouldn't get these errors. Double check again.

-Justin

--
========================================

Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
MILES-IGERT Trainee
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

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