[gmx-users] Segmentation fault

Xavier Periole X.Periole at rug.nl
Sat Dec 22 14:42:05 CET 2007


A lincs warning at the step number 2 suggests that there is
something really wrong in your starting structure. Check it
in detail and a energy minimization should help.

XAvier


On Fri, 21 Dec 2007 23:36:30 -0800 (PST)
  jahanshah ashkani <ashkani_2003 at yahoo.com> wrote:
> Sorry for the delay. What happened before the segmentation fault was:
> 
> Option     Filename  Type         Description
> ------------------------------------------------------------
>  -s    WTpreMD.tpr  Input        Generic run input: tpr tpb tpa xml
>  -o       traj.trr  Output       Full precision trajectory: trr trj
>  -x       traj.xtc  Output, Opt. Compressed trajectory (portable xdr format)
>  -c WTpreMDres.gro  Output       Generic structure: gro g96 pdb xml
>  -e       ener.edr  Output       Generic energy: edr ene
>  -g         md.log  Output       Log file
> -dgdl      dgdl.xvg  Output, Opt. xvgr/xmgr file
> -field    field.xvg  Output, Opt. xvgr/xmgr file
> -table    table.xvg  Input, Opt.  xvgr/xmgr file
> -tablep  tablep.xvg  Input, Opt.  xvgr/xmgr file
> -rerun    rerun.xtc  Input, Opt.  Generic trajectory: xtc trr trj gro g96 
>pdb
> -tpi        tpi.xvg  Output, Opt. xvgr/xmgr file
> -ei        sam.edi  Input, Opt.  ED sampling input
> -eo        sam.edo  Output, Opt. ED sampling output
>  -j       wham.gct  Input, Opt.  General coupling stuff
> -jo        bam.gct  Output, Opt. General coupling stuff
> -ffout      gct.xvg  Output, Opt. xvgr/xmgr file
> -devout   deviatie.xvg  Output, Opt. xvgr/xmgr file
> -runav  runaver.xvg  Output, Opt. xvgr/xmgr file
> -pi       pull.ppa  Input, Opt.  Pull parameters
> -po    pullout.ppa  Output, Opt. Pull parameters
> -pd       pull.pdo  Output, Opt. Pull data output
> -pn       pull.ndx  Input, Opt.  Index file
> -mtx         nm.mtx  Output, Opt. Hessian matrix
> -dn     dipole.ndx  Output, Opt. Index file
> 
> Option       Type   Value   Description
> ------------------------------------------------------
> -[no]h       bool   no      Print help info and quit
> -nice        int    19      Set the nicelevel
> -deffnm      string         Set the default filename for all file options
> -[no]xvgr    bool   yes     Add specific codes (legends etc.) in the output
>                            xvg files for the xmgrace program
> -np          int    1       Number of nodes, must be the same as used for
>                            grompp
> -nt          int    1       Number of threads to start on each node
> -[no]v       bool   no      Be loud and noisy
> -[no]compact bool   yes     Write a compact log file
> -[no]sepdvdl bool   no      Write separate V and dVdl terms for each
>                            interaction type and node to the log file(s)
> -[no]multi   bool   no      Do multiple simulations in parallel (only with
>                            -np > 1)
> -replex      int    0       Attempt replica exchange every # steps
> -reseed      int    -1      Seed for replica exchange, -1 is generate a seed
> -[no]glas    bool   no      Do glass simulation with special long range
>                            corrections
> -[no]ionize  bool   no      Do a simulation including the effect of an X-Ray
>                            bombardment on your system
> 
> 
> Back Off! I just backed up md.log to ./#md.log.5#
> Reading file WTpreMD.tpr, VERSION 3.3.2 (single precision)
> 
> Back Off! I just backed up ener.edr to ./#ener.edr.5#
> 
> Step -2, time -0.004 (ps)  LINCS WARNING
> relative constraint deviation after LINCS:
> max 1.349301 (between atoms 1113 and 1115) rms 0.035397
> bonds that rotated more than 30 degrees:
> atom 1 atom 2  angle  previous, current, constraint length
>   1104   1106   58.3    0.1456   0.2551      0.1470
>   1106   1107   58.9    0.1530   0.2667      0.1530
>   1106   1111   64.3    0.1533   0.1159      0.1530
>   1111   1112   80.4    0.1231   0.1854      0.1230
>   1111   1113   41.2    0.4557   0.1995      0.1330
>   1113   1114   82.4    0.0996   0.0968      0.1000
>   1113   1115   80.8    0.1476   0.3453      0.1470
>   1115   1116   62.3    0.1531   0.2768      0.1530
>   1115   1119   77.7    0.1517   0.2741      0.1530
>   1116   1117   36.3    0.1423   0.1747      0.1430
>   1121   1122   80.7    0.0992   0.1188      0.1000
>   1121   1123   84.8    0.1477   0.2245      0.1470
>   1123   1124   44.6    0.1517   0.2118      0.1530
>   1123   1137   43.4    0.1521   0.2093      0.1530
> 
> Step -1, time -0.002 (ps)  LINCS WARNING
> relative constraint deviation after LINCS:
> max 0.933924 (between atoms 1111 and 1113) rms 0.024333
> bonds that rotated more than 30 degrees:
> atom 1 atom 2  angle  previous, current, constraint length
>   1106   1111   92.2    0.1159   0.1138      0.1530
>   1111   1112   53.2    0.1854   0.0685      0.1230
>   1111   1113   59.6    0.1995   0.2572      0.1330
>   1113   1114   91.9    0.0968   0.1353      0.1000
>   1113   1115   62.5    0.3453   0.2040      0.1470
>   1115   1116   38.8    0.2768   0.1783      0.1530
>   1115   1119   61.2    0.2741   0.2458      0.1530
>   1119   1120   78.7    0.1051   0.1090      0.1230
>   1121   1122   44.4    0.1188   0.1374      0.1000
>   1121   1123   52.0    0.2245   0.2043      0.1470
>   1123   1137   35.9    0.2093   0.1656      0.1530
> starting mdrun '? in water'
> 250000 steps,    500.0 ps.
> 
> 
> Back Off! I just backed up traj.trr to ./#traj.trr.5#
> 
> Step 0, time 0 (ps)  LINCS WARNING
> relative constraint deviation after LINCS:
> max 16002.615234 (between atoms 1113 and 1114) rms 421.562012
> bonds that rotated more than 30 degrees:
> atom 1 atom 2  angle  previous, current, constraint length
>    161    162   63.3    0.1090   0.1092      0.1090
>   1087   1089   43.8    0.1470   0.2111      0.1470
>   1089   1090   41.6    0.1530   0.2121      0.1530
>   1089   1093   65.1    0.1530   0.6815      0.1530
>   1093   1094   57.4    0.1230   0.6487      0.1230
>   1093   1095   70.3    0.1332   7.4581      0.1330
>   1095   1096   63.4    0.1002   6.9145      0.1000
>   1095   1097   87.2    0.1477  38.1974      0.1470
>   1097   1098   87.4    0.1537  38.3103      0.1530
>   1097   1102   46.0    0.1563  93.5811      0.1530
>   1098   1099   74.2    0.1431   8.7328      0.1430
>   1098   1101   71.4    0.1531   8.6649      0.1530
>   1099   1100   73.2    0.1000   0.5716      0.1000
>   1102   1103   81.3    0.1266 123.2126      0.1230
>   1102   1104  101.3    0.1498 345.5438      0.1330
>   1104   1105  100.3    0.1138 339.2171      0.1000
>   1104   1106   73.4    0.2551 1196.1974      0.1470
>   1106   1107   73.8    0.2667 1298.7706      0.1530
>   1106   1111  115.0    0.1159 1137.4712      0.1530
>   1107   1108  156.6    0.1678 272.5244      0.1530
>   1108   1109   49.9    0.1545  96.5447      0.1530
>   1108   1110   81.5    0.1545  73.5228      0.1530
>   1111   1112  131.6    0.1854 528.7211      0.1230
>   1111   1113   80.4    0.1995 1840.3479      0.1330
>   1113   1114   93.7    0.0968 1600.3616      0.1000
>   1113   1115   89.2    0.3453 1596.2660      0.1470
>   1115   1116   89.7    0.2768 128.4722      0.1530
>   1115   1119   94.4    0.2741 131.9932      0.1530
>   1116   1117   90.0    0.1747  50.8581      0.1430
>   1117   1118   72.9    0.1024   0.8743      0.1000
>   1121   1122  176.1    0.1188   9.3235      0.1000
>   1121   1123  149.0    0.2245   5.8261      0.1470
>   1123   1124  120.6    0.2118   1.7661      0.1530
>   1123   1137   44.0    0.2093   2.3012      0.1530
>   1137   1138   86.5    0.1271   0.6245      0.1230
>   1137   1139  154.1    0.1377   0.5616      0.1330
>   2720   2721   35.4    0.1090   0.1090      0.1090
> Segmentation fault
> 
> and my *.mdp file was:  
> 
> ;
> ;    User spoel (236)
> ;    Wed Nov  3 17:12:44 1993
> ;    Input file
> ;
> cpp                 =  cpp
> define              =  -DPOSRES
> constraints         =  all-bonds
> integrator          =  md
> dt                  =  0.002    ; ps !
> nsteps              =  250000    ; total 10 ps.
> nstcomm             =  1
> nstxout             =  250
> nstvout             =  1000
> nstfout             =  0
> nstlog              =  10
> nstenergy           =  10
> nstlist             =  5
> ns_type             =  grid
> rlist               =  0.9
> coulombtype         =  PME
> rcoulomb            =  0.9
> rvdw                =  1.4
> 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 two groups
> Tcoupl              =  berendsen
> tc-grps            =  Protein SOL NA+ 
> tau_t               =  0.1     0.1 0.1 
> ref_t               =  300     300 300 
> ; Pressure coupling is on
> Pcoupl              =  berendsen
> tau_p               =  0.5
> compressibility     =  4.5e-5
> ref_p               =  1.0
> ; Generate velocites is on at 300 K.
> gen_vel             =  yes
> gen_temp            =  300.0
> gen_seed            =  173529
> 
> 
> 
> 
> Jahanshah Ashkani,
> PhD student of Biotechnology & Genetics,
> University of the Western Cape,
> Biotechnology Department,
> Private Bag X17,
> 7735 Bellville,
> Cape Town,
> South Africa
> jashkani at mail.biotech.uwc.ac.za
> 
> ----- Original Message ----
>From: Justin A. Lemkul <jalemkul at vt.edu>
> To: Discussion list for GROMACS users <gmx-users at gromacs.org>
> Sent: Tuesday, December 4, 2007 7:27:35 AM
> Subject: Re: [gmx-users] Segmentation fault
> 
> 
> Quoting jahanshah ashkani <ashkani_2003 at yahoo.com>:
> 
>> Hi,
>> I have got a segmentation fault error when I run mdrun for 1ns. I
> would be
>> glad if you let me know what is going on and how can I solve it.
>> Thank you very much.
> 
> What happened before the segmentation fault?
> 
> -Justin
> 
>>
>> Best,
>>
>>
>> Jahanshah Ashkani,
>> PhD student of Biotechnology & Genetics,
>> University of the Western Cape,
>> Biotechnology Department,
>> Private Bag X17,
>> 7735 Bellville,
>> Cape Town,
>> South Africa
>> jashkani at mail.biotech.uwc.ac.za
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-----------------------------------------------------
XAvier Periole - PhD

NMR & Molecular Dynamics Group
University of Groningen
The Netherlands
http://md.chem.rug.nl/~periole
-----------------------------------------------------



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