[AMBER] Energy abrupt rise in Energy minimization

From: Jiang Yusheng <yusheng0104.gmail.com>
Date: Wed, 4 Aug 2010 13:37:32 -0400

Hello

When I was running Energy minimization, the energy sharply increased and the
work was aborted. What's could be the reason for this case?

Below is the *.out tail

   NSTEP ENERGY RMS GMAX NAME NUMBER
  17300 1.9182E+10 1.6589E+09 6.7717E+11 HA 648

 BOND = 483559.0833 ANGLE = 7234.5316 DIHED =
4227.6711
 VDWAALS = ************* EEL = -368250.4717 HBOND =
0.0000
 1-4 VDW = 2785.0987 1-4 EEL = 18154.9785 RESTRAINT =
53757.8170
 EAMBER = *************

My Input is like below

 minimize system
 &cntrl
   imin=1, irest=0, maxcyc=30000, ncyc=200,
   cut=9.0,
   ntb=0, ntpr = 100, ntr=1
 /
group input for cart restraints
100.0
RES 1 453
END
END

Thanks for your answer or suggestions

Best



-- 
Yusheng Jason Jiang
Department of Chemistry
Georgia State University
Atlanta, 30302 GA
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Received on Wed Aug 04 2010 - 11:00:03 PDT
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