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老师修改过后,平衡相模拟:
gmx grompp -f eq.mdp -c em.gro -p topol.top -o eq.tpr -r em.gro
运行成功,但是mdrun的时候出现了以下问题
gmx mdrun -v -deffnm eq
Using 1 MPI thread
Using 4 OpenMP threads
WARNING: Using the slow plain C kernels. This should
not happen during routine usage on supported platforms.
Step 0, time 0 (ps) LINCS WARNING
relative constraint deviation after LINCS:
rms 4.589765, max 152.877777 (between atoms 32729 and 32730)
bonds that rotated more than 30 degrees:
atom 1 atom 2 angle previous, current, constraint length
Wrote pdb files with previous and current coordinates
Step 0, time 0 (ps) LINCS WARNING
relative constraint deviation after LINCS:
rms 2169.020020, max 92229.296875 (between atoms 32729 and 32730)
bonds that rotated more than 30 degrees:
atom 1 atom 2 angle previous, current, constraint length
1 4 85.7 0.1476 14.3722 0.1493
1 27 117.6 0.7739 87.7616 0.1826
1 33 142.4 0.1979 34.8137 0.1848
1 39 99.7 0.2540 3.7037 0.2763
2 5 153.7 0.3052 118.3330 0.1465
......
32822 32825 75.5 0.1012 2.9946 0.0960
32823 32825 57.8 0.1517 108.2485 0.1566
32822 32824 84.3 0.1004 4.0798 0.0961
32823 32824 76.1 0.1591 97.6529 0.1567
-------------------------------------------------------
Program: gmx mdrun, version 2018.8
Source file: src/gromacs/mdlib/constr.cpp (line 169)
Fatal error:
Too many LINCS warnings (1379)
If you know what you are doing you can adjust the lincs warning threshold in
your mdp file
or set the environment variable GMX_MAXCONSTRWARN to -1,
but normally it is better to fix the problem
请问各位老师,怎么样去修改mdp文件呢
define = -DPOSRES
integrator = md
dt = 0.002 ; ps
nsteps = 100000 ; 200ps
comm-grps = system
energygrps =
energygrp-excl =
;
nstxout = 0
nstvout = 0
nstfout = 0
nstlog = 500
nstenergy = 500
nstxout-compressed = 1000
compressed-x-grps = system
;
annealing = single
annealing_npoints = 2
annealing_time = 0 100 ;ps
annealing_temp = 0 298.15
;
periodic-molecules = yes
pbc = xyz
cutoff-scheme = verlet
nstlist = 10
rlist = 1.2
coulombtype = PME
rcoulomb = 1.2
vdwtype = cut-off
rvdw = 1.2
DispCorr = EnerPres
;
Tcoupl = V-rescale
tau_t = 0.2
tc_grps = system
ref_t = 298.15
;
Pcoupl = Berendsen
pcoupltype = isotropic
tau_p = 0.5
ref_p = 1.0
compressibility = 4.5e-5
refcoord_scaling = all
;
gen_vel = no
gen_temp = 298.15
gen_seed = -1
;
freezegrps =
freezedim =
constraints = all-bonds
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