Dear all,

I am learning to use VOTCA with LAMMPS and the IBI method, and have 
successfully tested the spce example and coarse-grained a monoatomic 
material. 

Now, I am trying to make a dodecane chain model of structure A-B-B-A, and 
using the hexane example as a reference to create the setting, mapping and 
topology files. The LAMMPS files for the coarse-grained dodecane have been 
tested and work fine. Actually, I am getting errors just after the LAMMPS 
run of the first iteration. These errors are related to the topology file 
topol.top. In first place, the error was related to the absence of this 
file (not needed in the monoatomic case), and now that I am using an 
adaptation of the hexane's topol.top file, it is the format to blame 
according to inverse.log:

Calculating rdfs with csg_stat using 8 tasks
Running critical command 'csg_stat --nt 8 --options 
/home/jjbm/Documents/Molecules/Topologies/SimpleExamples/Dodecane/CG_Dodecane/cg_450K/test_nononbonded/settings.xml
 
--top topol.top --trj traj.dump --begin 0 --$
begin to calculate distribution functions
# of bonded interactions: 0
# of non-bonded interactions: 3
an error occurred:
input format not supported: topol.top

Callstack:
~/share/votca/scripts/inverse/inverse.sh - linenumber 264
    do_external - linenumber 176 in ~
/share/votca/scripts/inverse/functions_common.sh
        ~/share/votca/scripts/inverse/update_ibi.sh - linenumber 31
            for_all - linenumber 22 (see 'csg_call --cat function for_all')
                    do_external - linenumber 19 (see 'csg_call --cat 
function do_external')
                       ~/share/votca/scripts/inverse/calc_rdf_generic.sh - 
linenumber 79
                            critical - linenumber 4 (see 'csg_call --cat 
function critical')
                                die - linenumber 2 (see 'csg_call --cat 
function die')
####################################################################################################################################################################################################################$
#                                                                               
                                                                                
                                                    
$
# 
ERROR:                                                                          
                                                                                
                                                  
$
# critical: 'csg_stat --nt 8 --options /test_nononbonded/settings.xml --top 
topol.top --trj traj.dump --begin 0 --first-frame 0$
# For details see the logfile 
/test_nononbonded/inverse.log                                                   
                 
$
#                                                                               
                                                                                
                                                    
$
####################################################################################################################################################################################################################$
die: (called from 9953)  CSG_MASTER_PID is 6366
die: pids to kill: 0

Attached are the three files corresponding to this molecule. Since I have 
never used GROMACS, I am not sure what I am doing wrong there. Any help?

Thanks in advance,
Kind regards

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Attachment: topol.top
Description: Binary data

Attachment: settings.xml
Description: XML document

Attachment: dodecane_cg.xml
Description: XML document

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