[AMBER] TI using soft-core potential

From: Sushil Mishra <sushilbioinfo.gmail.com>
Date: Wed, 26 May 2010 11:54:07 +0200

Hello all,

I had gone through tutorial "Calculating Relative Binding Free Energies for
Protein / Carbohydrate Complexes" and did same setup of my system. The only
difference id that due to different comping facility, I cant use the same
was to submit jobs. When I am running the Ti calculation for ligand, it 1st
step.when i do the minimization of ligand and discharging the atoms to be
disappear, I am getting error.

I used same input files as mentioned in tutorial except 12A octahedral water
box and 10A Ele cutoff instead of 9.
########### input file ######################################
 Discharge me-fucose atoms, lambda=0 endpoint input, charged
 &cntrl
  imin = 1, ntx = 1,
  maxcyc=500,
  ntpr = 100,
  ntf = 2, ntc = 2,
  ntb = 1, cut = 10.0,
  icfe=1,clambda=0.1
  ifsc=0
  crgmask=''
  scmask=''

 &end
#################### output error #########################
.
.
.
.
| MPI Timing options:
| profile_mpi = 0
 numgroup must be 2 if icfe is set
     Setting ifbox to 3 for non-orthogonal unit cell

 *** input error(s)
------------------------------------------------------------------------------------------------
what may be the problem, i use icfe=1 but in do not understand numgroup, I
cant see any variable of this mane in manual too. can anyone of you suggest
me that waats going wrong ?

Regards

..sushil
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Received on Wed May 26 2010 - 03:00:04 PDT
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