A much better written and complete guide to getting started with MD in ECCE+NWChem is found here: http://saccharides.blogspot.tw/2013/06/ecce-md-calculation.html
Original post:
Part 1:
http://verahill.blogspot.com.au/2012/05/md-ecce-nwchem-1-prepare.html
Part 2:
http://verahill.blogspot.com.au/2012/05/md-ecce-nwchem-2-md-optimize.html
Part 3:
http://verahill.blogspot.com.au/2012/05/md-ecce-nwchem-3-energy.html
Rightclick, new, dynamics
Double-click on the new icon
Click on editor
Make sure the number of step is high enough -- I had a lot of off errors when it was 30, or 300. You should also use an equilibration period -- here I didn't.
Nothing much to see here.
Here's the output -- without initial equilibration
And that's about it. Time to start looking into doing MM/QM...
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