[gmx-users] Not enough ref_t and tau_t values!

MGiò magiofer at gmail.com
Tue Mar 7 14:19:21 CET 2006


Hi Miguel!
the same thing happened to me just yesterday. My problem was that, for some
reasons not worth to tell, some atoms were missing from one of my groups. I
made a new index.ndx file and no errors were reported anymore. So my piece
of advice is check your index file. I hope it helps,
greetings,
MGiò


On 3/7/06, Miguel Ortiz Lombardia <molatwork at yahoo.es> wrote:
>
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> Hi all,
>
> I get this error from grompp:
>
> Program grompp, VERSION 3.3
> Source code file: readir.c, line: 1131
>
> Fatal error:
> Not enough ref_t and tau_t values!
>
> However, I do have three values for ref_t and tau_t, as many as groups
> (I made an index.ndx file that I feed to grompp to support the
> non-standard group ('Na')
>
> This is my input:
>
>
> title                    = 20ps Position-restrained MD
> cpp                      = /lib/cpp -traditional
> define                   = -DPOSREF
> integrator               = md
> dt                       = 0.002
> nsteps                   = 10000
> nstxout                  = 1000
> nstvout                  = 1000
> nstlog                   = 1000
> nstenergy                = 50
> nstxtcout                = 50
> xtc_grps                 = Protein
> energygrps               = Protein  SOL  Na
> nstlist                  = 10
> ns_type                  = grid
> rlist                    = 0.9
> coulombtype              = PME
> rcoulomb                 = 0.9
> rvdw                     = 0.9
> tcoupl                   = Berendsen
> tc-grps                  = Protein  SOL  Na
> tau_t                    = 0.1  0.1  0.1
> ref_t                    = 300  300  300
> Pcoupl                   = Berendsen
> tau_p                    = 1.0
> compressibility          = 4.5e-5
> ref_p                    = 1.0
> gen_vel                  = yes
> gen_temp                 = 300
> gen_seed                 = 173529
> constraints              = all-bonds
>
>
> Any clues?
>
>
> Cheers,
>
>
> Miguel
> - --
> Miguel Ortiz Lombardía
> Centro de Investigaciones Oncológicas
> C/ Melchor Fernández Almagro, 3
> 28029 Madrid, Spain
> Tel. +34 912 246 900
> Fax. +34 912 246 976
> email: molatwork at yahoo.es
> www: http://www.ysbl.york.ac.uk/~mol/
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Je suis de la mauvaise herbe,
> Braves gens, braves gens,
> Je pousse en liberté
> Dans les jardins mal fréquentés!
>                                                        Georges Brassens
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