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#1 2020-06-22 05:25:20

aleks
Member
Registered: 2020-06-20
Posts: 1

Seminumerical Hessian calculation

Hi,


I was trying to calculate the MCPDFT Hessian in OpenMolcas but it turns out that McKinley doesn't recognize the MCPDFT type of WF. I'm wondering, if there is a way to compute a seminumerical Hessian from the MCPDFT analytical gradient that is already available?

Alex

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#2 2020-06-22 12:42:04

Ignacio
Administrator
From: Uppsala
Registered: 2015-11-03
Posts: 1,012

Re: Seminumerical Hessian calculation

Try:

>Do While
&SEWARD
&MCPDFT
&SLAPAF
  Numerical
  Iterations = 0
> End Do

You may need to increase the value of MOLCAS_MAXITER

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