[gmx-users] mdrun running without simulating new steps

st y1gao at ucsd.edu
Wed Sep 2 00:58:07 CEST 2009


Hi,

I run a two-molecule system with mdrun_d in a water box (~10000 water molecules.)
The program looks running properly (no errors nor warnnings)
However the program seems stop outputting files (because the output file size stop increases) after about 5min.
The mdrun_d interface looks normal without any errors, the md.log contains only two saves:

Any help/suggestions will be greatly appreciated!

Thank you!!
Stone Gao
**********************
Input Parameters:
   integrator           = md
   nsteps               = 40000
   init_step            = 0
   ns_type              = Grid
   nstlist              = 1
   ndelta               = 2
   nstcomm              = 1
   comm_mode            = Linear
   nstlog               = 100
   nstxout              = 100
   nstvout              = 100
   nstfout              = 100
   nstenergy            = 100
   nstxtcout            = 100
   init_t               = 0
   delta_t              = 0.0005
   xtcprec              = 1e+06
   nkx                  = 60
   nky                  = 60
   nkz                  = 90
   pme_order            = 4
   ewald_rtol           = 1e-05
   ewald_geometry       = 0
   epsilon_surface      = 0
   optimize_fft         = TRUE
   ePBC                 = xyz
   bPeriodicMols        = FALSE
   bContinuation        = FALSE
   bShakeSOR            = FALSE
   etc                  = Nose-Hoover
   epc                  = No
   epctype              = Isotropic
   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
   andersen_seed        = 815131
   rlist                = 1
   rtpi                 = 0.05
   coulombtype          = PME
   rcoulomb_switch      = 0
   rcoulomb             = 1
   vdwtype              = Cut-off
   rvdw_switch          = 0
   rvdw                 = 1
   epsilon_r            = 1
   epsilon_rf           = 1
   tabext               = 1
   implicit_solvent     = No
   gb_algorithm         = Still
   gb_epsilon_solvent   = 80
   nstgbradii           = 1
   rgbradii             = 2
   gb_saltconc          = 0
   gb_obc_alpha         = 1
   gb_obc_beta          = 0.8
   gb_obc_gamma         = 4.85
   sa_surface_tension   = 2.092
   DispCorr             = No
   free_energy          = no
   init_lambda          = 0
   sc_alpha             = 0
   sc_power             = 0
   sc_sigma             = 0.3
   delta_lambda         = 0
   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
   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             = 1000
   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}
   userint1             = 0
   userint2             = 0
   userint3             = 0
   userint4             = 0
   userreal1            = 0
   userreal2            = 0
   userreal3            = 0
   userreal4            = 0
grpopts:
   nrdf:       96048
   ref_t:         300
   tau_t:         0.5
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
Table routines are used for coulomb: TRUE
Table routines are used for vdw:     FALSE
Will do PME sum in reciprocal space.

++++ PLEASE READ AND CITE THE FOLLOWING REFERENCE ++++
U. Essman, L. Perela, M. L. Berkowitz, T. Darden, H. Lee and L. G. Pedersen 
A smooth particle mesh Ewald method
J. Chem. Phys. 103 (1995) pp. 8577-8592
-------- -------- --- Thank You --- -------- --------

Using a Gaussian width (1/beta) of 0.320163 nm for Ewald
Cut-off's:   NS: 1   Coulomb: 1   LJ: 1
System total charge: -20.000
Generated table with 4000 data points for Ewald.
Tabscale = 2000 points/nm
Generated table with 4000 data points for LJ6.
Tabscale = 2000 points/nm
Generated table with 4000 data points for LJ12.
Tabscale = 2000 points/nm

Enabling SPC water optimization for 10139 molecules.

Configuring nonbonded kernels...
Testing ia32 SSE2 support... present.


Removing pbc first time
Center of mass motion removal mode is Linear
We have the following groups for center of mass motion removal:
  0:  rest
There are: 32017 Atoms
Max number of connections per atom is 37
Total number of connections is 102233
Max number of graph edges per atom is 4
Total number of graph edges is 44156
Initial temperature: 0 K

Started mdrun on node 0 Tue Sep  1 15:25:43 2009

           Step           Time         Lambda
              0        0.00000        0.00000

Grid: 9 x 9 x 14 cells
   Energies (kJ/mol)
           Bond          Morse          Angle       G96Angle    Proper Dih.
    3.35232e+05    3.27635e+01    7.09937e+02    1.73811e+01    2.47097e+03
        LJ (SR)   Coulomb (SR)   Coul. recip.      Potential    Kinetic En.
    1.48669e+05   -4.50390e+05   -1.89304e+04    1.78117e+04    4.38796e+05
   Total Energy  Conserved En.    Temperature Pressure (bar)
    4.56608e+05    4.56608e+05    1.09892e+03   -5.74950e+04

           Step           Time         Lambda
            100        0.05000        0.00000

   Energies (kJ/mol)
           Bond          Morse          Angle       G96Angle    Proper Dih.
    3.38536e+05    1.06967e+03    2.21584e+04    4.26526e+01    3.13457e+03
        LJ (SR)   Coulomb (SR)   Coul. recip.      Potential    Kinetic En.
    8.73487e+04   -5.64854e+05   -4.48577e+04   -1.57422e+05    3.56524e+05
   Total Energy  Conserved En.    Temperature Pressure (bar)
    1.99102e+05    7.60608e+05    8.92881e+02    7.56563e+04


**********************
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