modified on 11 September 2014 at 14:03 ••• 852 views

Release66:Qmmm method

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method   [method1]  [method2]  [method3]

This directive controls which optimization algorithm will be used for the regions as defined by regions directive. The allowed values are "bfgs" aka driver, "lbfgs" limited memory version of quasi-newton, and "sd" simple steepest descent algorithm. The use of this directive is not recommended in all but special cases. In particular, "bfgs" should be used for QM region if there are any constraints, "sd" method should always be used for classical solute and solvent atoms with shake constraints.