[AMBER] rfree: Error decoding variable 2 2

From: Vaibhav Jain <xtreme.vaibhav.gmail.com>
Date: Thu, 8 Jul 2010 00:13:28 +0530

Dear sir,

I have the following input file that has ntr restraints. When I ran
minimization these restrains work well but, but in dynamics it is not
working.



Initial minimization with position restraints on DNA, 9.0 cut
 &cntrl
  nmropt = 1,
  ntx = 1, irest = 0, ntrx = 1, ntxo = 1,
  ntpr = 100, ntwx = 500, ntwv = 0, ntwe = 0,
  ntwprt = 0, ntwr = 500,

  ntf = 2, ntb = 2, dielc = 1.0,
  cut = 9.0, nsnb = 10,
  scnb = 2.0, scee = 1.2,

  ipol = 0,

  ibelly = 0, ntr = 1,

  imin = 0,
  maxcyc = 5000,
  ncyc = 2000,
  ntmin = 1, dx0 = 0.1, drms = 0.0001,

  nstlim = 40000,
  nscm = 1000,
  t = 0.0, dt = 0.001,

  temp0 = 300.0, tempi = 300.0,
  ig = 71277,
  ntt = 1,
  tautp = 0.5,
  vlimit = 20.0,


  ntp = 1, pres0 = 1.0, comp = 44.6,
  taup = 0.5,

  ntc = 2, tol = 0.0005,

 &end
&end
 &wt
   type='TEMP0', istep1=0, istep2=6000,
                 value1=10.0, value2=50.0,
 &end
 &wt
   type='TEMP0', istep1=6000, istep2=18000,
                 value1=50.0, value2=100.0,
 &end
 &wt
   type='TEMP0', istep1=18000, istep2=28000,
                 value1=100.0, value2=200.0,
 &end
 &wt
   type='TEMP0', istep1=28000, istep2=40000,
                 value1=200.0, value2=300.0,
 &end
 &wt
   type='END',
 &end
 &rst
   iat=0,
 &end
Hold the DNA fixed
20.0
RES 1 125
END
END

###########################

After running the sander job, following error message is coming ....

.
.
.
.
.


   5. REFERENCE ATOM COORDINATES


    ----- READING GROUP 1; TITLE:
  &rst


     GROUP 1 HAS HARMONIC CONSTRAINTS -4.00000

     rfree: Error decoding variable 2 2 from:
Hold the

     this indicates that your input contains

      incorrect information

     field 2 was supposed to

      have a (1=character, 2=integer, 3=decimal) value

###################################################

Please help me to resolve this problem.



----
With Regards
Vaibhav
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Received on Wed Jul 07 2010 - 12:00:03 PDT
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