[gmx-users] ERROR: pressure coupling not enough values (I need 1)

Ms. Aswathy S aswathys at amritapuri.amrita.edu
Fri Jun 12 13:09:42 CEST 2009


I have specified ref_p as 1, now grommp works fine.but show the error as below. From the previous post what I understood is this is a problem with the gromacs version. I am using Gromacs3.2.1. Is that could be the problem??

Back Off! I just backed up minim+ener.edr to ./#minim+ener.edr.2#
starting mdrun 'Protein in water'
10000 steps,     20.0 ps.


Back Off! I just backed up RBP4_em_eq1_20ps.trr to ./#RBP4_em_eq1_20ps.trr.2#

Step 0, time 0 (ps)  LINCS WARNING
relative constraint deviation after LINCS:
max 1428.842651 (between atoms 1547 and 1548) rms 43.118099
bonds that rotated more than 30 degrees:
 atom 1 atom 2  angle  previous, current, constraint length
     50     51   93.1    0.1530   1.1319      0.1530
     51     52   92.8    0.1470   4.0768      0.1470
     52     53   95.0    0.1000   3.3258      0.1000
     52     54   93.7    0.1340   9.4062      0.1340
     54     55   93.2    0.1340   8.3665      0.1340
     54     58   90.5    0.1340  47.1335      0.1340
     55     56   91.6    0.1000   4.4466      0.1000
     55     57   91.5    0.1000   4.4648      0.1000
     58     59   90.2    0.1000  48.3157      0.1000
     58     60   90.2    0.1000  47.7912      0.1000
     74     75   90.0    0.1430   0.9637      0.1430
     75     76   90.0    0.1000   0.3743      0.1000
    112    116   30.3    0.1340   0.1354      0.1340
    116    117   36.7    0.1000   0.1036      0.1000
    116    118   52.9    0.1000   0.1068      0.1000
    156    158   88.6    0.1330   0.1471      0.1330
    158    159   89.5    0.1000   0.1658      0.1000
    158    160   89.4    0.1000   0.1357      0.1000
    314    315   90.0    0.1780   0.3872      0.1780
    474    475   94.7    0.1530   0.0262      0.1530
    475    476   91.5    0.1530   0.3873      0.1530
    476    477   90.5    0.1250   0.7752      0.1250
    476    478   91.9    0.1250   0.3319      0.1250
    677    678   93.2    0.1530   0.3123      0.1530
    678    679   92.8    0.1530   0.9707      0.1530
    679    680   92.4    0.1230   0.9836      0.1230
    679    681   90.6    0.1330   3.5962      0.1330
    681    682   90.2    0.1000   3.8687      0.1000
    681    683   90.2    0.1000   3.6579      0.1000
   1200   1204   36.1    0.1390   0.1420      0.1390
   1204   1205   90.0    0.1080   1.8158      0.1080
   1204   1206   33.9    0.1390   0.1433      0.1390
   1542   1544   98.5    0.1470   0.6632      0.1470
   1544   1545   94.3    0.1530   5.8372      0.1530
   1544   1552   98.5    0.1530   0.6695      0.1530
   1545   1546   91.3    0.1530  39.3403      0.1530
   1546   1547   93.3    0.1530  69.5871      0.1530
   1547   1548   91.1    0.1230 175.8707      0.1230
   1547   1549   93.2    0.1330  71.3069      0.1330
   1549   1550   91.5    0.1000  39.8680      0.1000
   1549   1551   91.4    0.1000  40.0342      0.1000
   1625   1626   38.0    0.1000   0.1028      0.1000
   1625   1627   32.7    0.1000   0.1012      0.1000
   1715   1717   39.9    0.1330   0.1337      0.1330
   1717   1718   64.0    0.1000   0.1027      0.1000
   1717   1719   63.0    0.1000   0.1019      0.1000

Back Off! I just backed up step-1.pdb to ./#step-1.pdb.2#

Back Off! I just backed up step0.pdb to ./#step0.pdb.2#
Wrote pdb files with previous and current coordinates
step 0
MPI process rank 0 (n0, p9393) caught a SIGSEGV.


Thanks,
Aswathy


Dept. Biotechnology
Ext. 3108

----- Original Message -----
From: "Justin A. Lemkul" <jalemkul at vt.edu>
To: "Discussion list for GROMACS users" <gmx-users at gromacs.org>
Sent: Friday, June 12, 2009 4:31:28 PM GMT +05:30 Chennai, Kolkata, Mumbai, New Delhi
Subject: Re: [gmx-users] ERROR: pressure coupling not enough values (I need 1)



Ms. Aswathy S wrote:
> Hi,
> 
> thanks for the help till now..
> 
> Now I got a problem that an equilibration step of 20 ps shows an error as follows when i run grommp.
> 
> ERROR: pressure coupling not enough values (I need 1)
> 
> Please find the md.mdp file that I have used for this step.
> 

You haven't specified ref_p.

-Justin

> 
> thanks,
> Aswathy
> Dept. Biotechnology
> Ext. 3108
> 
> 
> ------------------------------------------------------------------------
> 
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-- 
========================================

Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

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