Re: [AMBER] TI Job crashes at some lambda values during heating

From: manikanthan bhavaraju <manikanthanbhavaraju.gmail.com>
Date: Sat, 22 May 2010 22:47:19 -0500

Firstly why are heating your system during the TI calculations? Could you
give us more details about your equilibration process and TI calculations.

manikanthan

On Sat, May 22, 2010 at 7:18 PM, case <case.biomaps.rutgers.edu> wrote:

> On Sat, May 22, 2010, sunita gupta wrote:
> >
> > I am doing TI using AMBER10. I successfully did the charge annihilation
> > step, but while doing vanderwal decoupling my job crashes at some lambda
> > values.
>
> Can you give some details about your input files? Are you using softcore
> potentials? It is possible that your system is on the edge of instability
> (especially if you are heating quickly) and you were just lucky before.
> Have
> you tried just starting the vdW decoupling using the restart files from the
> end of the charge annihilation step?
>
> [It does seem hard to see how there would be a systematic difference (or a
> bug) that would lead to results being different for two rather similar
> values
> of lambda.]
>
> ....dac
>
>
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Received on Sat May 22 2010 - 21:00:03 PDT
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