[gmx-users] Problem with incorrect GB-Polarization Energy Value

jesmin jahan shraban03 at gmail.com
Wed Aug 29 19:06:09 CEST 2012


Dear Justin,

Thanks for your reply.
Here is the CMV.log file . Please check it.


Actually, the .pdb file I am using is already minimized and we are
using the same file for amber 11 and Octree based molecular dynamic
package.
I will also do the minimization step to see what happens.

One thing I also want to mention is when I run
 grompp -f mdr.mdp -c conf.gro -p topol.top -o imd.tpr command, I get
following the log.

NOTE 1 [file mdr.mdp]:
  Tumbling and or flying ice-cubes: We are not removing rotation around
  center of mass in a non-periodic system. You should probably set
  comm_mode = ANGULAR.


NOTE 2 [file mdr.mdp]:
  You are using a cut-off for VdW interactions with NVE, for good energy
  conservation use vdwtype = Shift (possibly with DispCorr)


NOTE 3 [file mdr.mdp]:
  You are using a cut-off for electrostatics with NVE, for good energy
  conservation use coulombtype = PME-Switch or Reaction-Field-zero


NOTE 4 [file mdr.mdp]:
  No SA (non-polar) calculation requested together with GB. Are you sure
  this is what you want?


Generated 2211 of the 2211 non-bonded parameter combinations
Generating 1-4 interactions: fudge = 0.5
Generated 2211 of the 2211 1-4 parameter combinations
Excluding 3 bonded neighbours molecule type 'Protein_chain_A'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A2'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B2'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C2'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A3'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B3'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C3'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A4'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B4'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C4'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A5'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B5'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C5'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A6'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B6'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C6'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A7'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B7'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C7'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A8'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B8'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C8'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A9'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B9'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C9'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A10'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B10'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C10'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A11'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B11'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C11'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A12'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B12'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C12'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A13'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B13'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C13'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A14'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B14'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C14'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A15'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B15'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C15'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A16'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B16'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C16'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A17'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B17'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C17'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A18'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B18'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C18'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A19'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B19'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C19'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A20'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B20'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C20'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A21'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B21'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C21'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A22'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B22'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C22'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A23'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B23'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C23'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A24'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B24'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C24'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A25'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B25'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C25'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A26'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B26'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C26'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A27'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B27'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C27'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A28'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B28'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C28'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A29'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B29'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C29'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A30'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B30'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C30'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A31'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B31'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C31'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A32'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B32'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C32'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A33'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B33'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C33'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A34'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B34'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C34'
Excluding 3 bonded neighbours molecule type 'Protein_chain_A35'
Excluding 3 bonded neighbours molecule type 'Protein_chain_B35'
Excluding 3 bonded neighbours molecule type 'Protein_chain_C35'
... so on.

NOTE 5 [file topol.top, line 388]:
  System has non-zero total charge: 780.000004
  Total charge should normally be an integer. See
  http://www.gromacs.org/Documentation/Floating_Point_Arithmetic
  for discussion on how close it should be to an integer.



Analysing residue names:
There are: 32280    Protein residues
Analysing Protein...
Number of degrees of freedom in T-Coupling group rest is 1529097.00
This run will generate roughly 39 Mb of data

There were 5 notes

Back Off! I just backed up imd.tpr to ./#imd.tpr.1#

gcq#97: "The Universe is Somewhere In Here" (J.G.E.M. Fraaije)


I was only interested in non bonded terms (Specially GB-Energy), so I
guess, exclusion of bonded terms is not a problem.

Thanks,
Jesmin

On Wed, Aug 29, 2012 at 12:09 PM, Justin Lemkul <jalemkul at vt.edu> wrote:
>
>
> On 8/29/12 11:27 AM, jesmin jahan wrote:
>>
>> Ops!
>>
>> Thanks Justin for you quick reply.
>> Sorry, I have attached a log file from previous run. I am attaching
>> the correct log file here. Please have a look.
>>
>
> I don't see a new .log file attached anywhere.
>
>
>> Actually, I am a Computer Science student. I do not have enough
>> background of Molecular Dynamics.
>> I am using these three commands and
>>
>> pdb2gmx -f 1F15-full.pdb -ter -ignh -ff amber99 -water none
>> grompp -f mdr.mdp -c conf.gro -p topol.top -o imd.tpr
>> OMP_NUM_THREADS=12 mdrun -nt 16 -s imd.tpr
>>
>> and my .mdp file is like this:
>>
>> constraints         =  none
>> integrator          =  md
>> pbc                 =  no
>> dt                  =  0.001   ; ps
>> nsteps              =  0 ; 100000 ps = 100 ns
>> rcoulomb            = 1
>> rvdw                = 1
>> rlist               =1
>> nstgbradii          = 1
>> rgbradii            = 1
>> implicit_solvent    =  GBSA
>> gb_algorithm        =  HCT ; OBC ; Still
>> sa_algorithm        =  None
>>
>>
>> What else might go wrong?
>>
>
> The normal workflow included energy minimization before running MD.  Basic
> tutorial material covers this.  Without EM, you assume that whatever
> structure you're using is suitable for MD, which may or may not be true.
>
> -Justin
>
>
>> Thanks,
>> Jesmin
>>
>> On Wed, Aug 29, 2012 at 11:14 AM, Justin Lemkul <jalemkul at vt.edu> wrote:
>>>
>>>
>>>
>>> On 8/29/12 11:11 AM, jesmin jahan wrote:
>>>>
>>>>
>>>> Thanks Mark for your reply.
>>>>
>>>> For the time being, I admit your claim that I am comparing apple with
>>>> orange.
>>>> So, to investigate more, I run the simulation without any modification
>>>> in parameter fields and force field I am using. My test data is CMV
>>>> virus shell.
>>>> I am using the following commands.
>>>>
>>>> pdb2gmx -f 1F15-full.pdb -ter -ignh -ff amber99 -water none
>>>> grompp -f mdr.mdp -c conf.gro -p topol.top -o imd.tpr
>>>> OMP_NUM_THREADS=12 mdrun -nt 16 -s imd.tpr
>>>>
>>>>
>>>> The log file looks like this:
>>>>    :-)  G  R  O  M  A  C  S  (-:
>>>>
>>>>                      GROningen MAchine for Chemical Simulation
>>>>
>>>>                      :-)  VERSION 4.6-dev-20120820-87e5bcf  (-:
>>>>
>>>>           Written by Emile Apol, Rossen Apostolov, Herman J.C.
>>>> Berendsen,
>>>>         Aldert van Buuren, Pär Bjelkmar, Rudi van Drunen, Anton
>>>> Feenstra,
>>>>           Gerrit Groenhof, Peter Kasson, Per Larsson, Pieter Meulenhoff,
>>>>              Teemu Murtola, Szilard Pall, Sander Pronk, Roland Schulz,
>>>>                   Michael Shirts, Alfons Sijbers, Peter Tieleman,
>>>>
>>>>                  Berk Hess, David van der Spoel, and Erik Lindahl.
>>>>
>>>>          Copyright (c) 1991-2000, University of Groningen, The
>>>> Netherlands.
>>>>               Copyright (c) 2001-2010, The GROMACS development team at
>>>>           Uppsala University & The Royal Institute of Technology,
>>>> Sweden.
>>>>               check out http://www.gromacs.org for more information.
>>>>
>>>>            This program is free software; you can redistribute it and/or
>>>>             modify it under the terms of the GNU General Public License
>>>>            as published by the Free Software Foundation; either version
>>>> 2
>>>>                of the License, or (at your option) any later version.
>>>>
>>>>                                 :-)  mdrun_mpi  (-:
>>>>
>>>>
>>>> ++++ PLEASE READ AND CITE THE FOLLOWING REFERENCE ++++
>>>> B. Hess and C. Kutzner and D. van der Spoel and E. Lindahl
>>>> GROMACS 4: Algorithms for highly efficient, load-balanced, and scalable
>>>> molecular simulation
>>>> J. Chem. Theory Comput. 4 (2008) pp. 435-447
>>>> -------- -------- --- Thank You --- -------- --------
>>>>
>>>>
>>>> ++++ PLEASE READ AND CITE THE FOLLOWING REFERENCE ++++
>>>> D. van der Spoel, E. Lindahl, B. Hess, G. Groenhof, A. E. Mark and H. J.
>>>> C.
>>>> Berendsen
>>>> GROMACS: Fast, Flexible and Free
>>>> J. Comp. Chem. 26 (2005) pp. 1701-1719
>>>> -------- -------- --- Thank You --- -------- --------
>>>>
>>>>
>>>> ++++ PLEASE READ AND CITE THE FOLLOWING REFERENCE ++++
>>>> E. Lindahl and B. Hess and D. van der Spoel
>>>> GROMACS 3.0: A package for molecular simulation and trajectory analysis
>>>> J. Mol. Mod. 7 (2001) pp. 306-317
>>>> -------- -------- --- Thank You --- -------- --------
>>>>
>>>>
>>>> ++++ PLEASE READ AND CITE THE FOLLOWING REFERENCE ++++
>>>> H. J. C. Berendsen, D. van der Spoel and R. van Drunen
>>>> GROMACS: A message-passing parallel molecular dynamics implementation
>>>> Comp. Phys. Comm. 91 (1995) pp. 43-56
>>>> -------- -------- --- Thank You --- -------- --------
>>>>
>>>> Input Parameters:
>>>>      integrator           = md
>>>>      nsteps               = 0
>>>>      init-step            = 0
>>>>      ns-type              = Grid
>>>>      nstlist              = 10
>>>>      ndelta               = 2
>>>>      nstcomm              = 10
>>>>      comm-mode            = Linear
>>>>      nstlog               = 1000
>>>>      nstxout              = 0
>>>>      nstvout              = 0
>>>>      nstfout              = 0
>>>>      nstcalcenergy        = 10
>>>>      nstenergy            = 100
>>>>      nstxtcout            = 0
>>>>      init-t               = 0
>>>>      delta-t              = 0.001
>>>>      xtcprec              = 1000
>>>>      nkx                  = 0
>>>>      nky                  = 0
>>>>      nkz                  = 0
>>>>      pme-order            = 4
>>>>      ewald-rtol           = 1e-05
>>>>      ewald-geometry       = 0
>>>>      epsilon-surface      = 0
>>>>      optimize-fft         = FALSE
>>>>      ePBC                 = no
>>>>      bPeriodicMols        = FALSE
>>>>      bContinuation        = FALSE
>>>>      bShakeSOR            = FALSE
>>>>      etc                  = No
>>>>      bPrintNHChains       = FALSE
>>>>      nsttcouple           = -1
>>>>      epc                  = No
>>>>      epctype              = Isotropic
>>>>      nstpcouple           = -1
>>>>      tau-p                = 1
>>>>      ref-p (3x3):
>>>>         ref-p[    0]={ 0.00000e+00,  0.00000e+00,  0.00000e+00}
>>>>         ref-p[    1]={ 0.00000e+00,  0.00000e+00,  0.00000e+00}
>>>>         ref-p[    2]={ 0.00000e+00,  0.00000e+00,  0.00000e+00}
>>>>      compress (3x3):
>>>>         compress[    0]={ 0.00000e+00,  0.00000e+00,  0.00000e+00}
>>>>         compress[    1]={ 0.00000e+00,  0.00000e+00,  0.00000e+00}
>>>>         compress[    2]={ 0.00000e+00,  0.00000e+00,  0.00000e+00}
>>>>      refcoord-scaling     = No
>>>>      posres-com (3):
>>>>         posres-com[0]= 0.00000e+00
>>>>         posres-com[1]= 0.00000e+00
>>>>         posres-com[2]= 0.00000e+00
>>>>      posres-comB (3):
>>>>         posres-comB[0]= 0.00000e+00
>>>>         posres-comB[1]= 0.00000e+00
>>>>         posres-comB[2]= 0.00000e+00
>>>>      rlist                = 1
>>>>      rlistlong            = 1
>>>>      rtpi                 = 0.05
>>>>      coulombtype          = Cut-off
>>>>      rcoulomb-switch      = 0
>>>>      rcoulomb             = 1
>>>>      vdwtype              = Cut-off
>>>>      rvdw-switch          = 0
>>>>      rvdw                 = 1
>>>>      epsilon-r            = 1
>>>>      epsilon-rf           = inf
>>>>      tabext               = 1
>>>>      implicit-solvent     = GBSA
>>>>      gb-algorithm         = HCT
>>>>      gb-epsilon-solvent   = 80
>>>>      nstgbradii           = 1
>>>>      rgbradii             = 1
>>>>      gb-saltconc          = 0
>>>>      gb-obc-alpha         = 1
>>>>      gb-obc-beta          = 0.8
>>>>      gb-obc-gamma         = 4.85
>>>>      gb-dielectric-offset = 0.009
>>>>      sa-algorithm         = None
>>>>      sa-surface-tension   = 2.25936
>>>>      DispCorr             = No
>>>>      bSimTemp             = FALSE
>>>>      free-energy          = no
>>>>      nwall                = 0
>>>>      wall-type            = 9-3
>>>>      wall-atomtype[0]     = -1
>>>>      wall-atomtype[1]     = -1
>>>>      wall-density[0]      = 0
>>>>      wall-density[1]      = 0
>>>>      wall-ewald-zfac      = 3
>>>>      pull                 = no
>>>>      rotation             = FALSE
>>>>      disre                = No
>>>>      disre-weighting      = Conservative
>>>>      disre-mixed          = FALSE
>>>>      dr-fc                = 1000
>>>>      dr-tau               = 0
>>>>      nstdisreout          = 100
>>>>      orires-fc            = 0
>>>>      orires-tau           = 0
>>>>      nstorireout          = 100
>>>>      dihre-fc             = 0
>>>>      em-stepsize          = 0.01
>>>>      em-tol               = 10
>>>>      niter                = 20
>>>>      fc-stepsize          = 0
>>>>      nstcgsteep           = 1000
>>>>      nbfgscorr            = 10
>>>>      ConstAlg             = Lincs
>>>>      shake-tol            = 0.0001
>>>>      lincs-order          = 4
>>>>      lincs-warnangle      = 30
>>>>      lincs-iter           = 1
>>>>      bd-fric              = 0
>>>>      ld-seed              = 1993
>>>>      cos-accel            = 0
>>>>      deform (3x3):
>>>>         deform[    0]={ 0.00000e+00,  0.00000e+00,  0.00000e+00}
>>>>         deform[    1]={ 0.00000e+00,  0.00000e+00,  0.00000e+00}
>>>>         deform[    2]={ 0.00000e+00,  0.00000e+00,  0.00000e+00}
>>>>      adress               = FALSE
>>>>      userint1             = 0
>>>>      userint2             = 0
>>>>      userint3             = 0
>>>>      userint4             = 0
>>>>      userreal1            = 0
>>>>      userreal2            = 0
>>>>      userreal3            = 0
>>>>      userreal4            = 0
>>>> grpopts:
>>>>      nrdf:        9534
>>>>      ref-t:           0
>>>>      tau-t:           0
>>>> anneal:          No
>>>> ann-npoints:           0
>>>>      acc:                   0           0           0
>>>>      nfreeze:           N           N           N
>>>>      energygrp-flags[  0]: 0
>>>>      efield-x:
>>>>         n = 0
>>>>      efield-xt:
>>>>         n = 0
>>>>      efield-y:
>>>>         n = 0
>>>>      efield-yt:
>>>>         n = 0
>>>>      efield-z:
>>>>         n = 0
>>>>      efield-zt:
>>>>         n = 0
>>>>      bQMMM                = FALSE
>>>>      QMconstraints        = 0
>>>>      QMMMscheme           = 0
>>>>      scalefactor          = 1
>>>> qm-opts:
>>>>      ngQM                 = 0
>>>>
>>>> Initializing Domain Decomposition on 16 nodes
>>>> Dynamic load balancing: auto
>>>> Will sort the charge groups at every domain (re)decomposition
>>>> Minimum cell size due to bonded interactions: 0.000 nm
>>>> Scaling the initial minimum size with 1/0.8 (option -dds) = 1.25
>>>> Optimizing the DD grid for 16 cells with a minimum initial size of 0.000
>>>> nm
>>>> Domain decomposition grid 4 x 4 x 1, separate PME nodes 0
>>>> Domain decomposition nodeid 0, coordinates 0 0 0
>>>>
>>>> Detecting CPU-specific acceleration. Present hardware specification:
>>>> Vendor: GenuineIntel
>>>> Brand:  Intel(R) Xeon(R) CPU           X5680  @ 3.33GHz
>>>> Family:  6  Model: 44  Stepping:  2
>>>> Features: htt sse2 sse4.1 aes rdtscp
>>>> Acceleration most likely to fit this hardware: SSE4.1
>>>> Acceleration selected at Gromacs compile time: SSE4.1
>>>>
>>>> Table routines are used for coulomb: FALSE
>>>> Table routines are used for vdw:     FALSE
>>>> Cut-off's:   NS: 1   Coulomb: 1   LJ: 1
>>>> System total charge: 6.000
>>>> Configuring nonbonded kernels...
>>>> Configuring standard C nonbonded kernels...
>>>>
>>>>
>>>>
>>>> Linking all bonded interactions to atoms
>>>>
>>>> The initial number of communication pulses is: X 2 Y 2
>>>> The initial domain decomposition cell size is: X 0.79 nm Y 0.89 nm
>>>>
>>>> The maximum allowed distance for charge groups involved in interactions
>>>> is:
>>>>                    non-bonded interactions           1.000 nm
>>>> (the following are initial values, they could change due to box
>>>> deformation)
>>>>               two-body bonded interactions  (-rdd)   1.000 nm
>>>>             multi-body bonded interactions  (-rdd)   0.794 nm
>>>>
>>>> When dynamic load balancing gets turned on, these settings will change
>>>> to:
>>>> The maximum number of communication pulses is: X 2 Y 2
>>>> The minimum size for domain decomposition cells is 0.500 nm
>>>> The requested allowed shrink of DD cells (option -dds) is: 0.80
>>>> The allowed shrink of domain decomposition cells is: X 0.63 Y 0.56
>>>> The maximum allowed distance for charge groups involved in interactions
>>>> is:
>>>>                    non-bonded interactions           1.000 nm
>>>>               two-body bonded interactions  (-rdd)   1.000 nm
>>>>             multi-body bonded interactions  (-rdd)   0.500 nm
>>>>
>>>>
>>>> Making 2D domain decomposition grid 4 x 4 x 1, home cell index 0 0 0
>>>>
>>>> Center of mass motion removal mode is Linear
>>>> We have the following groups for center of mass motion removal:
>>>>     0:  rest
>>>> There are: 3179 Atoms
>>>> Charge group distribution at step 0: 84 180 252 196 237 210 255 157
>>>> 254 197 266 176 186 104 224 201
>>>> Grid: 4 x 4 x 4 cells
>>>> Initial temperature: 0 K
>>>>
>>>> Started mdrun on node 0 Wed Aug 29 02:32:21 2012
>>>>
>>>>              Step           Time         Lambda
>>>>                 0        0.00000        0.00000
>>>>
>>>>      Energies (kJ/mol)
>>>> GB Polarization        LJ (SR)   Coulomb (SR)      Potential    Kinetic
>>>> En.
>>>>      -1.65116e+04    5.74908e+08   -2.37699e+05    5.74654e+08
>>>> 6.36009e+11
>>>>      Total Energy    Temperature Pressure (bar)
>>>>       6.36584e+11    1.60465e+10    0.00000e+00
>>>>
>>>>          <======  ###############  ==>
>>>>          <====  A V E R A G E S  ====>
>>>>          <==  ###############  ======>
>>>>
>>>>          Statistics over 1 steps using 1 frames
>>>>
>>>>      Energies (kJ/mol)
>>>> GB Polarization        LJ (SR)   Coulomb (SR)      Potential    Kinetic
>>>> En.
>>>>      -1.65116e+04    5.74908e+08   -2.37699e+05    5.74654e+08
>>>> 6.36009e+11
>>>>      Total Energy    Temperature Pressure (bar)
>>>>       6.36584e+11    1.60465e+10    0.00000e+00
>>>>
>>>>      Total Virial (kJ/mol)
>>>>      -1.13687e+09    1.14300e+07   -1.23884e+07
>>>>       1.14273e+07   -1.15125e+09   -5.31658e+06
>>>>      -1.23830e+07   -5.31326e+06   -1.16512e+09
>>>>
>>>>      Pressure (bar)
>>>>       0.00000e+00    0.00000e+00    0.00000e+00
>>>>       0.00000e+00    0.00000e+00    0.00000e+00
>>>>       0.00000e+00    0.00000e+00    0.00000e+00
>>>>
>>>>      Total Dipole (D)
>>>>       1.35524e+03   -4.39059e+01    2.16985e+03
>>>>
>>>>
>>>>          M E G A - F L O P S   A C C O U N T I N G
>>>>
>>>>      RF=Reaction-Field  FE=Free Energy  SCFE=Soft-Core/Free Energy
>>>>      T=Tabulated        W3=SPC/TIP3p    W4=TIP4p (single or pairs)
>>>>      NF=No Forces
>>>>
>>>>    Computing:                               M-Number         M-Flops  %
>>>> Flops
>>>>
>>>>
>>>> -----------------------------------------------------------------------------
>>>>    Generalized Born Coulomb                 0.006162           0.296
>>>> 0.2
>>>>    GB Coulomb + LJ                          0.446368          27.228
>>>> 19.8
>>>>    Outer nonbonded loop                     0.015554           0.156
>>>> 0.1
>>>>    Born radii (HCT/OBC)                     0.452530          82.813
>>>> 60.3
>>>>    Born force chain rule                    0.452530           6.788
>>>> 4.9
>>>>    NS-Pairs                                 0.940291          19.746
>>>> 14.4
>>>>    Reset In Box                             0.003179           0.010
>>>> 0.0
>>>>    CG-CoM                                   0.006358           0.019
>>>> 0.0
>>>>    Virial                                   0.003899           0.070
>>>> 0.1
>>>>    Stop-CM                                  0.006358           0.064
>>>> 0.0
>>>>    Calc-Ekin                                0.006358           0.172
>>>> 0.1
>>>>
>>>>
>>>> -----------------------------------------------------------------------------
>>>>    Total                                                     137.361
>>>> 100.0
>>>>
>>>>
>>>> -----------------------------------------------------------------------------
>>>>
>>>>
>>>>       D O M A I N   D E C O M P O S I T I O N   S T A T I S T I C S
>>>>
>>>>    av. #atoms communicated per step for force:  2 x 7369.0
>>>>
>>>>
>>>>        R E A L   C Y C L E   A N D   T I M E   A C C O U N T I N G
>>>>
>>>>    Computing:         Nodes     Number     G-Cycles    Seconds     %
>>>> -----------------------------------------------------------------------
>>>>    Domain decomp.        16          1        0.210        0.1    11.4
>>>>    Comm. coord.          16          1        0.006        0.0     0.3
>>>>    Neighbor search       16          1        0.118        0.1     6.4
>>>>    Force                 16          1        1.319        0.8    71.4
>>>>    Wait + Comm. F        16          1        0.016        0.0     0.9
>>>>    Update                16          1        0.003        0.0     0.2
>>>>    Comm. energies        16          1        0.093        0.1     5.0
>>>>    Rest                  16                   0.082        0.1     4.4
>>>> -----------------------------------------------------------------------
>>>>    Total                 16                   1.847        1.1   100.0
>>>> -----------------------------------------------------------------------
>>>>
>>>> NOTE: 5 % of the run time was spent communicating energies,
>>>>         you might want to use the -gcom option of mdrun
>>>>
>>>>
>>>>          Parallel run - timing based on wallclock.
>>>>
>>>>                  NODE (s)   Real (s)      (%)
>>>>          Time:      0.036      0.036    100.0
>>>>                  (Mnbf/s)   (GFlops)   (ns/day)  (hour/ns)
>>>> Performance:     12.702      3.856      2.425      9.896
>>>> Finished mdrun on node 0 Wed Aug 29 02:32:21 2012
>>>>
>>>>
>>>>
>>>> The GB- energy value reported is half of that reported by Amber 11 and
>>>> Octree based Molecular dynamic package.
>>>>
>>>> Although I guess the difference can be due to the difference in
>>>> algorithms they are using, but there could be some other reason.
>>>> If anyone knows what are the possible reasons behind this, please let
>>>> me know. May be fixing them will give me same value for all different
>>>> Molecular Dynamic Package.
>>>>
>>>
>>> I wouldn't trust the result you're getting here - the energy values and
>>> temperature (10^10, yikes!) suggest there is something very wrong with
>>> the
>>> starting configuration.
>>>
>>> -Justin
>>>
>>> --
>>> ========================================
>>>
>>> Justin A. Lemkul, Ph.D.
>>> Research Scientist
>>> 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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>>
>>
>>
>>
>>
>>
>
> --
> ========================================
>
> Justin A. Lemkul, Ph.D.
> Research Scientist
> Department of Biochemistry
> Virginia Tech
> Blacksburg, VA
> jalemkul[at]vt.edu | (540) 231-9080
> http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin
>
------
jesmin


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