Re: [AMBER] MMPBSA error

From: Ray Luo, Ph.D. <ray.luo.uci.edu>
Date: Tue, 10 Jun 2014 12:58:53 -0700

Okay, I've fixed the issue. If you have a 100% neutral system, you
should still be able to get the van der Waals energy in addition to
zero EPB/EGB and EELEC energies. The program would exit successfully,
with bunch of warnings/bomb messages printed in the output file.

I will get this patch to the Amber14 first. And will get it to Amber13 later.

All the best,
Ray
--
Ray Luo, Ph.D.
Professor,
Biochemistry, Molecular Biophysics, and
Biomedical Engineering
University of California, Irvine, CA 92697-3900
On Thu, Jun 5, 2014 at 4:25 PM, Ray Luo, Ph.D. <ray.luo.uci.edu> wrote:
> Zahra,
>
> One reason for the reported failure is that the receptor has not a
> single atom charged … the force driver simply skip the call to
> pb_force() in this situation. This is probably too crude for you since
> your nanotube was built with neutral atoms on purpose. This is not a
> negligence. I'll supply an update to allow van der Waals calculation
> to go through in this situation ...
>
> I'm trying to understand why the program complaints about the non
> bonded list for the complex that does contains charged atoms …
>
> All the best,
> Ray
> --
> Ray Luo, Ph.D.
> Professor,
> Biochemistry, Molecular Biophysics, and
> Biomedical Engineering
> University of California, Irvine, CA 92697-3900
>
>
> On Wed, Jun 4, 2014 at 10:52 AM, Ray Luo, Ph.D. <ray.luo.uci.edu> wrote:
>> Zahra,
>>
>> Can you email me off the list your prmtop/inpcrd to take a look? There
>> shouldn't be such error messages any more after our recent updates.
>>
>> Did you patch all updates and pass the tests for AmberTools 13?
>>
>> Ray
>>
>> On Jun 4, 2014 6:01 AM, "Jason Swails" <jason.swails.gmail.com> wrote:
>>>
>>> On Tue, 2014-06-03 at 13:17 -0700, zahra khatti wrote:
>>> > AmberTools13
>>>
>>> I'm not sure what the "correct" fix for this problem is.  You can try
>>> googling the error message, which will bring up previous threads that
>>> may help you solve the problem.
>>>
>>> You can also try increasing the maxnba estimate in
>>> $AMBERHOME/AmberTools/src/pbsa/pb_init.F90 (look at line 215) if none of
>>> the suggestions from past email threads work.
>>>
>>> You can print out the value of eclose + pclose + sclose + nclose + cntr
>>> as well as maxnba in pb_list.F90 (~line 699) to see how much bigger you
>>> need to make maxnba.
>>>
>>> If none of these work, I'll have to defer to a PBSA developer.
>>>
>>> Good luck,
>>> Jason
>>>
>>> --
>>> Jason M. Swails
>>> BioMaPS,
>>> Rutgers University
>>> Postdoctoral Researcher
>>>
>>>
>>> _______________________________________________
>>> AMBER mailing list
>>> AMBER.ambermd.org
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Received on Tue Jun 10 2014 - 13:30:03 PDT
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