Re: [AMBER] problem in converting cprestrt to cpin2 file in constant pH md

From: Jason Swails <jason.swails.gmail.com>
Date: Wed, 21 Jul 2010 12:33:03 -0400

Hello,

You do not need to create a cpin file from a cprestrt, the cprestrt will work just as well. As for the ambpdb error, does your restart file have any ********* entries from something migrating too far? How does the restart file look when you visualize it? ambpdb is failing on a floating point read, so i'm guessing it's a problem with a coordinate.

Visualizing will probably help you diagnose the problem.

Good luck!
Jason

--
Jason Swails
Quantum Theory Project,
University of Florida
Ph.D. Graduate Student
352-392-4032
On Jul 21, 2010, at 9:37 AM, nicholus bhattacharjee <nicholusbhattacharjee.gmail.com> wrote:
> Dear Jason,
>                    Thank you for your kind help. I have some other problems
> also. As you can see from my earlier I am running 10 nano seconds constant
> pH simulation in two batches of 5 nano seconds each. Now when the 5 nano
> second run is over I am able to generate the properties (like rmsd, trajout)
> from the trajectory file. But both my output files csprestrt and prod.rts
> files are corrupted for example
> 
> if I do
> 
> $ ambpdb -p prmtop <prod.rst> x.pdb
> 
> its giving error msg
> 
> | New format PARM file being parsed.
> | Version =    1.000 Date = 07/06/10 Time = 17:54:02
> At line 624 of file _ambpdb.f (unit = 5, file = 'stdin')
> Fortran runtime error: Bad value during floating point read
> 
> I am unable to understand what is the problem. My prod.out file is giving
> the analysis of the whole trajectory. Please help...
> 
> On Mon, Jul 12, 2010 at 10:04 AM, Jason Swails <jason.swails.gmail.com>wrote:
> 
>> Hello,
>> 
>> The cprestrt looks quite strange...  However, this step described in the
>> manual is only necessary if you feel the need to get rid of all the
>> extraneous zeroes that crop up because you're not titrating the maximum
>> number of residues (50).  sander simply dumps the contents of the whole
>> &cnstph namelist to the cprestrt file, then reads the contents of the
>> &cnstph namelist when it reads the cpin file.  Therefore, you can just use
>> the cprestrt as the cpin file directly without any modification.
>> 
>> Good luck!
>> Jason
>> 
>> On Mon, Jul 12, 2010 at 12:23 AM, nicholus bhattacharjee <
>> nicholusbhattacharjee.gmail.com> wrote:
>> 
>>> Dear community,
>>>                       I am running a constant pH MD of 10 nano seconds
>> in
>>> a remote cluster. Since there is a cut of time of 72 hrs for user I have
>> to
>>> break the simulation into two parts of 5 ns each. Now after the first 5
>> ns
>>> simulation is over I have go cprestrt file from the simulation. According
>>> to
>>> the manual I have to conver this cprestrt file to cpin2 file with the
>>> following command
>>> 
>>> $ cpintil.pl cprestrt > cpin2
>>> 
>>> 
>>> But it is showing the following errors
>>> 
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in numeric lt (<) at
>>> /usr/local/amber9/exe/CPin.pm line 238.
>>> Use of uninitialized value in array dereference at
>>> /usr/local/amber9/exe/CPin.pm line 186.
>>> Can't call method "AtomCount" on an undefined value at
>>> /usr/local/amber9/exe/CPin.pm line 61.
>>> 
>>> 
>>> I am unable to understand what to do. Please help. I am attaching the
>>> cprestrt file.
>>> 
>>> --
>>> Nicholus Bhattacharjee
>>> PhD Scholar
>>> Department of Chemistry
>>> University of Delhi
>>> Delhi-110007 (INDIA)
>>> Phone: 9873098743(M)
>>> 
>>> _______________________________________________
>>> AMBER mailing list
>>> AMBER.ambermd.org
>>> http://lists.ambermd.org/mailman/listinfo/amber
>>> 
>>> 
>> 
>> 
>> --
>> Jason M. Swails
>> Quantum Theory Project,
>> University of Florida
>> Ph.D. Graduate Student
>> 352-392-4032
>> _______________________________________________
>> AMBER mailing list
>> AMBER.ambermd.org
>> http://lists.ambermd.org/mailman/listinfo/amber
>> 
> 
> 
> 
> -- 
> Nicholus Bhattacharjee
> PhD Scholar
> Department of Chemistry
> University of Delhi
> Delhi-110007 (INDIA)
> Phone: 9873098743(M)
> _______________________________________________
> AMBER mailing list
> AMBER.ambermd.org
> http://lists.ambermd.org/mailman/listinfo/amber
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Received on Wed Jul 21 2010 - 11:30:04 PDT
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