Петр Попов wrote:
Unfortunately I've got an error.

This is .mdp file:

title = title
cpp                 =  /lib/cpp
integrator          =  md
tinit               =  0.0
dt = 0.002 nsteps = 25000 nstcomm = 1
comm_grps           =  System
ld_seed             =  -1
niter               =  40
nstxout             =  10000
nstvout             =  0
nstfout             =  0
nstlog              =  500
nstenergy           =  100
nstlist             =  10
ns_type             =  grid
rlist               =  1.2
coulombtype         =  PME
rcoulomb            =  1.2
fourierspacing      =  0.12
pme_order           =  4
optimize_fft        =  yes
pbc                 =  xyz
vdwtype             =  Cut-off
rvdw                =  1.2
tcoupl              =  V-rescale
tc_grps             =  System
tau_t               =  0.1
ref_t               =  300.0
annealing           = single
annealing_npoints   = 3
annealing_time      = 0 5 50
annealing_temp      = 5 300 300
pcoupl              =  berendsen
pcoupltype          =  isotropic
compressibility     =  4.5e-5
tau_p               =  10.0
ref_p               =  1.0
gen_vel             =  yes
gen_temp            =  5.0
gen_seed            =  -1
constraints         =  all-bonds
constraint_algorithm      =  Lincs
lincs_order         =  4
disre               =  simple
disre_weighting     = conservative
disre_mixed         = no
nstdisreout         = 50000
disre_tau           = 0
pull                = constraint
pull_geometry       = distance
pull_dim            = Y Y Y
pull_constr_tol     = 1e-6
pull_nstfout        = 1
pull_nstxout        = 1
pull_ngroups        = 1
pull_group0         = a
pull_group1         = b
pull_init1          = 0.700
pull_start          = no
pull_k1             = 1000
lincs_iter          = 2
energygrps          = Protein Protein

I just replace in .mdp file line energygrps = System and the error is:

Fatal error:
Atom 1 in multiple Energy Mon. groups (1 and 2)

What should I do to avoid this?


You cannot use multiple energygrps if those groups overlap in any way, as the error indicates. I thought you were setting "energygrps = Protein SOL"? If you're trying to get protein-only terms, then just set "energygrps = Protein"

-Justin



10 октября 2010 г. 20:01 пользователь Петр Попов <magistrpet...@gmail.com <mailto:magistrpet...@gmail.com>> написал:

    Thank you very much!

    10 октября 2010 г. 19:58 пользователь Justin A. Lemkul
    <jalem...@vt.edu <mailto:jalem...@vt.edu>> написал:



        Петр Попов wrote:

            So if I want to get protein-solvent component I should add
            in .mdp:

            energygrps = Protein SOL

            ?


        Yes, and set nstlist = 1.

        -Justin

            10 октября 2010 г. 16:41 пользователь Justin A. Lemkul
            <jalem...@vt.edu <mailto:jalem...@vt.edu>
            <mailto:jalem...@vt.edu <mailto:jalem...@vt.edu>>> написал:




               Петр Попов wrote:

                   Thank you for response!
                   One more question:
                   How can I get file with energy groups? Should I use
            grompp with
                   a -e ener.edr option? In this case, how to build
            ener.edr file?


               The "energrygrps" keyword is an .mdp option, so generate
            a new .tpr
               file with the desired groups and use the -rerun feature
            of mdrun on
               the trajectory that has already been produced.

               -Justin

                   9 октября 2010 г. 14:50 пользователь Mark Abraham
                   <mark.abra...@anu.edu.au
            <mailto:mark.abra...@anu.edu.au>
            <mailto:mark.abra...@anu.edu.au
            <mailto:mark.abra...@anu.edu.au>>
                   <mailto:mark.abra...@anu.edu.au
            <mailto:mark.abra...@anu.edu.au>
                   <mailto:mark.abra...@anu.edu.au
            <mailto:mark.abra...@anu.edu.au>>>> написал:


                      You can get that with cunning use of energy groups
            and mdrun
                   -rerun,
                      but not mid-simulation.
                      Mark

                      ----- Original Message -----
                      From: Петр Попов <magistrpet...@gmail.com
            <mailto:magistrpet...@gmail.com>
                   <mailto:magistrpet...@gmail.com
            <mailto:magistrpet...@gmail.com>>
                      <mailto:magistrpet...@gmail.com
            <mailto:magistrpet...@gmail.com>
                   <mailto:magistrpet...@gmail.com
            <mailto:magistrpet...@gmail.com>>>>
                      Date: Saturday, October 9, 2010 21:41
                      Subject: [gmx-users] output force
                      To: gmx-users@gromacs.org
            <mailto:gmx-users@gromacs.org> <mailto:gmx-users@gromacs.org
            <mailto:gmx-users@gromacs.org>>
                   <mailto:gmx-users@gromacs.org
            <mailto:gmx-users@gromacs.org> <mailto:gmx-users@gromacs.org
            <mailto:gmx-users@gromacs.org>>>

                       > Hello dear gmx-users!
                       >
                       > When calculated forces in gromacs to produce
            pmf, we have
                   the net
                      force in output. For example:
                       > ...
                       > #
                       > # Giving Russians Opium May Alter Current Situation
                       > #
                       > @    title "Pull force"
                       > @    xaxis  label "Time (ps)"
                       > @    yaxis  label "Force (kJ/mol/nm)"
                       > @TYPE xy
                       > 0.000000                1017490.761270
                       > 0.002000                -253098.034916
                       > 0.004000                -43856.400160
                       > 0.006000                48980.619113
                       > 0.008000                52103.053067
                       > 0.010000                33788.090031
                       > 0.012000                19096.388350
                       > 0.014000                14094.738810
                       > 0.016000                14027.621966
                       > 0.018000                15162.993741
                       > 0.020000                14136.978177
                       > ... etc.
                       >
                       > What sould I do to get the net force of
            protein-solvent
                      interactions or protein-protein interactions or
            solvent-solvent
                      interactions instead and get output .xvg file in
            the form
                   like this:
                       >
> time Force(type1) Force(type2) Force(type3)
                       >
> t1 f1 f1 f1 > t2 f2 f2 f2 > t3 f3 f3 f3 > ... ... ... ...
                       > etc.
                       >
                       > Thank you for attention and I hope you will
            help me!
                       > --
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               --     ========================================

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

               http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

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

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

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

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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