[gmx-users] Segmentation fault 3

Tanos C. C. França tccf at epq.ime.eb.br
Fri Mar 28 01:04:01 CET 2003


 
 
            Hi folks,
            I am facing the problem of segmentation fault again
!!!!!!!!!!!! This time I am trying to perform a Position Restrained (PR)
molecular dynamics (MD) of a crystallographic structure I have used
before to build a model by homology. I used the same parameters as to
the model but the calculation did not go on. With the model everything
went fine. I have performed 10 ps of PR MD and latter 100 ps of MD but
with the crystal structure nothing seems to work !!!!!!!!!!!!! I am
sending below the tail of my prlog.log file and my pr.mdp file.
            Thanks a lot in advance if someone could help me.
            Best
            Tanos C. C. Franca.
            
TAIL OF PRLOG.LOG
 
Step 114, time 0.114 (ps)  LINCS WARNING
relative constraint deviation after LINCS:
max 2.016897 (between atoms 716 and 717) rms 0.020721
bonds that rotated more than 30 degrees:
 atom 1 atom 2  angle  previous, current, constraint length
    716    717   90.1    0.7000   0.3258      0.1080
Constraint error in algorithm Lincs at step 114
 
Step 115, time 0.115 (ps)  LINCS WARNING
relative constraint deviation after LINCS:
max 13639.835303 (between atoms 716 and 717) rms 140.494485
bonds that rotated more than 30 degrees:
 atom 1 atom 2  angle  previous, current, constraint length
    696    709   37.7    0.1535   0.2057      0.1530
    709    710   37.9    0.1229   0.1467      0.1230
    709    711  154.9    0.1334   0.1971      0.1330
    711    712  117.4    0.1001   0.2346      0.1000
    711    713   87.3    0.1472   0.6345      0.1470
    713    714   97.3    0.1533   8.4348      0.1530
    713    727   88.6    0.1532   0.6032      0.1530
    714    715   83.9    0.1556  10.5211      0.1530
    715    716   99.0    0.1435  30.3582      0.1390
    715    718   87.6    0.1419  23.3350      0.1390
    716    717   90.0    0.3258 1473.2102      0.1080
    716    720   94.1    0.1368  47.1645      0.1390
    718    719   90.9    0.1098  20.1598      0.1080
    718    722   91.7    0.1410  72.4517      0.1390
    720    721  106.7    0.1077   9.1440      0.1080
    720    724   93.5    0.1393  39.6938      0.1390
    722    723   91.3    0.1082  56.1046      0.1080
    722    724   93.0    0.1389  36.3105      0.1390
    724    725   93.9    0.1356  47.1834      0.1360
    725    726   90.3    0.1001  17.8042      0.1000
    727    728  132.9    0.1231   0.2556      0.1230
    727    729  117.0    0.1331   0.2292      0.1330
    729    730   38.4    0.1000   0.1370      0.1000
    729    731   36.2    0.1470   0.1925      0.1470
Constraint error in algorithm Lincs at step 115
 
MY PR.MDP FILE
 
;     User spoel (236)
;     Wed Nov  3 17:12:44 1993
;     Input file
title               =  PEP MD
cpp                 =  /lib/cpp
define              =  -DPOSRE
constraints         =  all-bonds
integrator          =  md
dt                  =  0.001   ; ps !
nsteps              =  10000   ; total 10ps
nstcomm             =  1
nstxout             =  100
nstvout             =  0
nstfout             =  0
nstlist             =  10
ns_type             =  grid
rlist               =  0.9
coulombtype         =  PME
rcoulomb            =  0.9
rvdw                =  0.9
fourierspacing      =  0.12
fourier_nx          =  0
fourier_ny          =  0
fourier_nz          =  0
pme_order           =  4
ewald_rtol          =  1e-5
optimize_fft        =  yes
; Berendsen temperature coupling is on in three groups
Tcoupl              =  Berendsen
tau_t               = 0.1       0.1     0.1     0.1     0.1
tc-grps             = protein   plp     ffo     sol     Na
ref_t               = 300       300     300     300     300
; Pressure coupling is not on
Pcoupl              = no
pcoupltype          = isotropic
tau_p               = 5
compressibility     = 4.5e-5
ref_p               = 1.0
; Generate velocities is on at 300 K
gen_vel             = yes
gen_temp            = 300.0
gen_seed            = 173529
 
 
 
 

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