[gmx-users] core-dumped

Vytautas Rakeviius vytautas1987 at yahoo.com
Wed Sep 12 11:55:52 CEST 2018


 Investigate atoms 18720 and 18723 mentioned in error. From my experience such error happens when two atoms collide in completely unrealistic fashion.This error also dumps some pdb files at exact moment when things went really wrong and that ones you should look at.
Also I do not know what kind of settings file you used for minimization, but this one is my favorite: http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin/gmx-tutorials/lysozyme/Files/minim.mdp
You should try it.

    On Tuesday, September 11, 2018, 7:33:25 AM GMT+3, Bratin Kumar Das <177cy500.bratin at nitk.edu.in> wrote:  
 
 Dear all,
            During nvt equilibration I am getting the following error
gmx mdrun -v -s npt.tpr -deffnm npt
                      :-) GROMACS - gmx mdrun, 2016.5 (-:

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GROMACS:      gmx mdrun, version 2016.5
Executable:  /usr/local/gromacs/bin/gmx
Data prefix:  /usr/local/gromacs
Working dir:
/home/workstation/Documents/GROMACS_projects/GROMACS_GCGR_GLUCAGON_2
Command line:
  gmx mdrun -v -s npt.tpr -deffnm npt


Running on 1 node with total 4 cores, 4 logical cores
Hardware detected:
  CPU info:
    Vendor: Intel
    Brand:  Intel(R) Xeon(R) CPU E3-1225 v5 @ 3.30GHz
    SIMD instructions most likely to fit this hardware: AVX2_256
    SIMD instructions selected at GROMACS compile time: AVX2_256

  Hardware topology: Basic

Reading file npt.tpr, VERSION 2016.5 (single precision)
Changing nstlist from 5 to 25, rlist from 1.2 to 1.233

Using 1 MPI thread
Using 4 OpenMP threads


WARNING: This run will generate roughly 6779 Mb of data

starting mdrun '5YQZ_preprocessed - hbond-opt in water'
200000 steps,    400.0 ps.

Step 0, time 0 (ps)  LINCS WARNING
relative constraint deviation after LINCS:
rms 7.344571, max 575.613892 (between atoms 18720 and 18723)
bonds that rotated more than 30 degrees:
 atom 1 atom 2  angle  previous, current, constraint length
  2379  2380  37.5    0.0872  0.1066      0.1010
  2381  2382  47.9    0.1498  0.1052      0.1090
  2383  2384  47.4    0.0884  0.1147      0.1090
  2389  2390  49.1    0.0597  0.1001      0.0960
  2426  2427  90.0    0.1253  0.1266      0.1080
  4036  4037  54.9    0.1454  0.1077      0.1090
  4038  4039  46.1    0.1081  0.1121      0.1090
  4040  4041  30.2    0.0554  0.1124      0.1090
  4040  4042  32.8    0.1002  0.1123      0.1090
  4040  4043  35.1    0.1426  0.1129      0.1090
  5382  5384  50.3    0.1280  0.1093      0.1090
  5956  5957  37.0    0.0770  0.1141      0.1090
  5956  5959  89.8    0.1805  0.1828      0.1090
  5960  5961  61.7    0.1651  0.1267      0.1229
  6029  6031  89.9    0.1146  1.2008      0.1090
  6035  6036  31.6    0.1083  0.1036      0.1010
  6038  6040  42.5    0.1324  0.1043      0.1010
  6887  6888  31.1    0.1070  0.1111      0.1090
  6887  6889  59.5    0.1351  0.1100      0.1090
  13006  13007  42.3    0.1575  0.1385      0.1610
  13007  13008  41.7    0.1436  0.1329      0.1480
  13007  13009  90.0    0.1348  0.2201      0.1480
  13007  13010  38.2    0.1530  0.1563      0.1610
  18672  18673  86.0    0.1515  0.2646      0.1530
  18673  18674  92.0    0.1407  1.1474      0.1430
  18674  18675  124.6    0.1445  23.3042      0.1610
  18675  18677  82.6    0.1723  23.9350      0.1480
  18675  18678  106.9    0.1522  23.6614      0.1610
  18678  18679  89.6    0.1402  0.9389      0.1430
  18679  18680  92.0    0.1552  0.1875      0.1530
  18723  18724  62.7    0.1687  73.2199      0.1470
  18724  18725  89.5    0.1607  0.8262      0.1530
  18725  18726  90.8    0.1420  0.1872      0.1430
  18720  18723  156.7    0.1620  84.7622      0.1470
  18721  18723  66.7    0.1602  72.9378      0.1470
  18722  18723  67.9    0.1335  72.8562      0.1470
  20543  20544  88.9    0.1496  0.1505      0.1470
  20544  20545  30.8    0.1570  0.1781      0.1530
  20540  20543  89.5    0.1331  0.2780      0.1470
  20541  20543  89.3    0.1499  0.1735      0.1470
  20542  20543  89.2    0.1426  0.1755      0.1470
Wrote pdb files with previous and current coordinates
step 0
Step 1, time 0.002 (ps)  LINCS WARNING
relative constraint deviation after LINCS:
rms 0.060079, max 4.753909 (between atoms 18723 and 18724)
bonds that rotated more than 30 degrees:
 atom 1 atom 2  angle  previous, current, constraint length
  2381  2382  91.7    0.1052  0.1585      0.1090
  2426  2427  89.9    0.1266  0.1348      0.1080
  3148  3163  63.4    0.1598  0.1607      0.1522
  3163  3164  56.3    0.1267  0.1374      0.1229
  4036  4037  61.4    0.1077  0.1036      0.1090
  5382  5384  57.9    0.1093  0.1084      0.1090
  5956  5959  89.7    0.1828  0.1869      0.1090
  5960  5961  89.8    0.1267  0.1713      0.1229
  6029  6031  88.4    1.2008  0.1217      0.1090
  6038  6040  42.5    0.1043  0.0979      0.1010
  6887  6889  89.8    0.1100  0.1079      0.1090
  13006  13007  39.8    0.1385  0.1539      0.1610
  13007  13008  34.7    0.1329  0.1585      0.1480
  13007  13009  90.1    0.2201  0.1396      0.1480
  13007  13010  34.8    0.1563  0.1584      0.1610
  18672  18673  90.6    0.2646  0.1529      0.1530
  18673  18674  91.7    1.1474  0.1412      0.1430
  18674  18675  83.9  23.3042  0.1117      0.1610
  18675  18677  83.9  23.9350  0.1883      0.1480
  18675  18678  76.6  23.6614  0.1548      0.1610
  18678  18679  90.3    0.9389  0.1455      0.1430
  18679  18680  90.7    0.1875  0.1534      0.1530
  18723  18724  67.7  73.2199  0.8458      0.1470
  18724  18725  89.8    0.8262  0.8169      0.1530
  18725  18726  89.9    0.1872  0.5024      0.1430
  18720  18723  43.1  84.7622  0.4501      0.1470
  18721  18723  67.4  72.9378  0.6694      0.1470
  18722  18723  70.6  72.8562  0.6095      0.1470
  20543  20544  92.0    0.1505  0.1906      0.1470
  20544  20545  59.1    0.1781  0.1071      0.1530
  20540  20543  89.3    0.2780  0.1317      0.1470
  20541  20543  92.0    0.1735  0.1469      0.1470
  20542  20543  92.0    0.1755  0.1421      0.1470

step 1: One or more water molecules can not be settled.
Check for bad contacts and/or reduce the timestep if appropriate.
Wrote pdb files with previous and current coordinates
Segmentation fault (core dumped)
My minimization ran properly. I can't understang why it is happening
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