[gmx-users] addition of all hydrogens in pdb2gmx

2008-08-14 Thread sridhar acharya

Hi,

The manual says, pdb2gmx adds all hydrogens, including those for carbons.
But I could not find the output gro file to contain all the hydrogens 
(especially for carbons) satisfying all the valencies. Is there any 
option that I may be missing?


thanks,
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[gmx-users] PCA multiple outputs from g_anaeig

2006-10-18 Thread Sridhar Acharya

Hello,

g_anaeig analyzes the eigen vectors from eigenvec.trr and eigenval.xvg 
generated by g_covar and writes the proj.xvg, 2d_proj.xvg, 3d_proj.xvg, 
filtered.xvg. etc.

My question is.,
For a single run of g_anaeig only a specific 2d_proj.xvg (say between 
eigenvec 1 and 8), 3d_proj.xvg. etc could be written. But one may 
want to study the projections between 1 and 2, 1 and 3, 2 and 3. etc.
Is there any way to simultaneously write all the desired projections and 
filtered trajectories from a single run of g_anaeig, since all the 
required information will be already read once by the program. Any 
contributors for this?


Thanks in advance.

sridhar
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[gmx-users] Problem reading large file in g_covar

2006-09-26 Thread Sridhar Acharya
#

--
Sridhar Acharya, M
Senior Research Fellow
Lab of Computational Biology
CDFD, Gandipet Campus
Hyderabad. AP. INDIA
http://www.cdfd.org.in
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[gmx-users] Problem reading large file in g_covar

2006-09-26 Thread Sridhar Acharya

Hello,

I am running g_covar. But the program halts with the error message that 
the given xtc file was not found.
In fact the xtc file which is 7.1GB was very much existing. I suppose 
that it is a case of large file.
I  compiled GROMACS3.1.4 with --enable-largefile. But still the same 
error occurs. How to make g_covar

recognise this file?

##
:-)  G  R  O  M  A  C  S  (-:

  GRoups of Organic Molecules in ACtion for Science

   :-)  VERSION 3.1.4  (-:


  Copyright (c) 1991-2002, University of Groningen, The Netherlands
This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

:-)  
/users/sridhar/bin/GROMACS314_SOLARIS/SERIAL/sparc-sun-solaris2.9/ultrasparc3/bin/g_covar  
(-:


Option Filename  Type  Description

 -f50NS_WT.xtc  Input Generic trajectory: xtc trr trj gro 
g96 pdb
 -s ../FILES/b4md_1cyp_WT.tpr  Input Structure+mass(db): tpr 
tpb tpa

  gro g96 pdb
 -n ../FILES/pr_1cyp_WT.ndx  Input, Opt!   Index file
 -o eigenval_WT.xvg  Outputxvgr/xmgr file
 -v eigenvec_WT.trr  OutputFull precision trajectory: trr trj
-av average_WT.pdb  OutputGeneric structure: gro g96 pdb
 -l   covar_WT.log  OutputLog file
-xpm  covar.xpm  Output, Opt.  X PixMap compatible matrix file
-xpmacovara.xpm  Output, Opt.  X PixMap compatible matrix file

 Option   Type  Value  Description
--
 -[no]h   bool no  Print help info and quit
 -[no]X   bool no  Use dialog box GUI to edit command line options
  -niceint  0  Set the nicelevel
 -b   time  12000  First frame (ps) to read from trajectory
 -e   time  5  Last frame (ps) to read from trajectory
-dt   time -1  Only use frame when t MOD dt = first time (ps)
-tu   enum ps  Time unit: ps, fs, ns, us, ms, s, m or h
   -[no]fit   boolyes  Fit to a reference structure
   -[no]ref   bool no  Use the deviation from the conformation in the
   structure file instead of from the average
   -[no]mwa   bool no  Mass-weighted covariance analysis
  -lastint -1  Last eigenvector to write away (-1 is till the
   last)

Reading file ../FILES/b4md_1cyp_WT.tpr, VERSION 3.1.4 (single precision)
Reading file ../FILES/b4md_1cyp_WT.tpr, VERSION 3.1.4 (single precision)

Choose a group for the least squares fit
Group 0 (  System) has 41820 elements
Group 1 ( Protein) has  4858 elements
Group 2 (   Protein-H) has  3775 elements
Group 3 ( C-alpha) has   478 elements
Group 4 (Backbone) has  1434 elements
Group 5 (   MainChain) has  1913 elements
Group 6 (MainChain+Cb) has  2361 elements
Group 7 ( MainChain+H) has  2363 elements
Group 8 (   SideChain) has  2495 elements
Group 9 ( SideChain-H) has  1862 elements
Group10 ( Prot-Masses) has  4858 elements
Group11 ( Non-Protein) has 36962 elements
Group12 (HEME) has47 elements
Group13 ( SOL) has 36912 elements
Group14 ( CL-) has 3 elements
Group15 (   Other) has 36962 elements
Group16 (Protein_HEME) has  4905 elements
Group17 (Protein_HEME_CL-) has  4908 elements
Select a group: 3

Choose a group for the covariance analysis
Group 0 (  System) has 41820 elements
Group 1 ( Protein) has  4858 elements
Group 2 (   Protein-H) has  3775 elements
Group 3 ( C-alpha) has   478 elements
Group 4 (Backbone) has  1434 elements
Group 5 (   MainChain) has  1913 elements
Group 6 (MainChain+Cb) has  2361 elements
Group 7 ( MainChain+H) has  2363 elements
Group 8 (   SideChain) has  2495 elements
Group 9 ( SideChain-H) has  1862 elements
Group10 ( Prot-Masses) has  4858 elements
Group11 ( Non-Protein) has 36962 elements
Group12 (HEME) has47 elements
Group13 ( SOL) has 36912 elements
Group14 ( CL-) has 3 elements
Group15 (   Other) has 36962 elements
Group16 (Protein_HEME) has  4905 elements
Group17 (Protein_HEME_CL-) has  4908 elements
Select a group: 3

Note: the fit and analysis group are identical,
 while the fit is mass weighted and the analysis is not.
 Making the fit non mass weighted.

Constructing covariance matrix (1434x1434)...
Fatal error: File 50NS_WT.xtc not found
#

--
Sridhar Acharya, M
Senior Research Fellow
Lab

Re: [gmx-users] MD continuation runs in serial but not in parallel

2006-07-04 Thread Sridhar Acharya
I did not use -shuffle -t  to run this. However even when I use -shuffle 
option the same error occurs.



From: Sridhar Acharya [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED],Discussion list for GROMACS users 
gmx-users@gromacs.org

To: gmx-users@gromacs.org
Subject: [gmx-users] MD continuation runs in serial but not in parallel
Date: Mon, 03 Jul 2006 17:56:27 +0530

Dear GMX users,
I used grompp with -t option to continue a serially run simulation to run 
in parallel. I have given gen_vel = no in the .mdp file.
But mdrun with -np 2 stops and reports the following error. (md.log file 
is given below)

The same simulation could be continued in serial without any error.
What is the cause for this descrepancy? Any parameters to be set?
#
Going to use C-settle (5335 waters)
wo = 0.888096, wh =0.0559521, wohh = 18.0154, rc = 0.081665, ra = 
0.00645837

rb = 0.051255, rc2 = 0.16333, rone = 1, dHH = 0.16333, dOH = 0.1

Constraining the coordinates at t0-dt (step -1)
  Rel. Constraint Deviation:  Maxbetween atoms RMS
  Before LINCS 0.42   4862   4887   0.07
   After LINCS 0.49   4880   4881   0.10

Started mdrun on node 0 Mon Jul  3 18:48:47 2006
Initial temperature: 301.39 K
Grid: 17 x 14 x 19 cells
  Step   Time Lambda  Annealing
 00.00.01.0

  Rel. Constraint Deviation:  Maxbetween atoms RMS
  Before LINCS 0.058480   3573   3574   0.005918
   After LINCS 0.000140   3842   3844   0.20


t = 0.000 ps: Water molecule starting at atom 17176 can not be settled.
Check for bad contacts and/or reduce the timestep.Wrote pdb files with 
previous and current coordinates

  Energies (kJ/mol)
  G96AngleProper Dih.  Improper Dih.  LJ-14 Coulomb-14
   8.10484e+033.58568e+032.61866e+031.41412e+034.86285e+04
   LJ (SR)   Coulomb (SR)   Coulomb (LR)  PotentialKinetic En.
   2.14166e+08   -5.54411e+05   -1.31762e+052.13544e+08nan
  Total EnergyTemperature Pressure (bar)
   nannannan
##

--
 



Did you use the -shuffle option of grompp?
With grompp -shuffle -t
grompp expectes a shuffled trajectory.

Berk.

--
Sridhar Acharya, M
Senior Research Fellow
Lab of Computational Biology
CDFD, Gandipet Campus
Hyderabad. AP. INDIA
http://www.cdfd.org.in
email: [EMAIL PROTECTED]
Phone: Lab: 08413-235467*2044
Mobile: 9866147193


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[gmx-users] Continuation of Serial MD simulation in Parallel

2006-07-03 Thread Sridhar Acharya
p for User2 containing 41820 elements
Making dummy/rest group for XTC containing 41820 elements
Making dummy/rest group for Or. Res. Fit containing 41820 elements
T-Coupling has 4 element(s): Protein HEME SOL CL-
Energy Mon. has 4 element(s): Protein HEME SOL CL-
Acceleration has 1 element(s): rest
Freeze has 1 element(s): rest
User1 has 1 element(s): rest
User2 has 1 element(s): rest
VCM has 1 element(s): rest
XTC has 1 element(s): rest
Or. Res. Fit has 1 element(s): rest
Checking consistency between energy and charge groups...
getting data from old trajectory ...
Reading Coordinates and Box size from old trajectory
Will read till time 2
Velocities generated: ignoring velocities in
input trajectory
trn version: GMX_trn_file
Reading frame 680 time 19997.312 Using frame at t = 2 ps
Starting time for run is 0 ps
Calculating fourier grid dimensions for X Y Z
Using a fourier grid of 72x56x75, spacing 0.111 0.114 0.117
splitting topology...
Walking down the molecule graph to make shake-blocks
There are 14390 charge group borders and 12308 shake borders
There are 12308 total borders
Division over nodes in atoms:
10455 10455 10455 10455
writing run input file...

Back Off! I just backed up test.tpr to ./#test.tpr.4#
There were 7 warnings

gcq#142: "It Was My Pleasure" (Pulp Fiction)
#####
-- 
Sridhar Acharya, M
Senior Research Fellow
Lab of Computational Biology
CDFD, Gandipet Campus
Hyderabad. AP. INDIA
http://www.cdfd.org.in
email: [EMAIL PROTECTED]
Phone: Lab: 08413-235467*2044
Mobile: 9866147193




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Re: [gmx-users] Continuation of Serial MD simulation in Parallel

2006-07-03 Thread Sridhar Acharya





Thanks so much for the answer.
I have one more doubt. Could you please answer?
I could make the change and run, but still the following line in the
log file, "Starting time for run is 0 ps" (BLUE color), appears
controversial to me. 
The log message is as follows.
##
Checking consistency between energy and charge
groups...
getting data from old trajectory ...
Reading Coordinates, Velocities and Box size from old trajectory
Will read till time 2
trn version: GMX_trn_file
Reading frame 60 time 19917.312 Using frame at t = 2 ps
Starting time for run is 0 ps
Calculating fourier grid dimensions for X Y Z
Using a fourier grid of 72x56x75, spacing 0.111 0.114 0.117
splitting topology...
Walking down the molecule graph to make shake-blocks
There are 14390 charge group borders and 12308 shake borders
There are 12308 total borders
Division over nodes in atoms:
10455 10455 10455 10455
writing run input file...

###

Dallas B. Warren wrote:

  
So I am generating .tpr file as follows using the command as follows.

  
  Does the log message (Highlighted in RED)
  
  
"Velocities generated: ignoring velocities in input trajectory", means

  
  that the simulation wont be continuation
  
  
of the earlier one?

  
  
That warning tells you that in your .mdp file you have velocity
generation on, turn that option off.  You don't want that if you want a
continuation of the run.  The velocity of the atoms is taken from the
.trr file that you feed to grompp.

Catch ya,

Dr. Dallas Warren
Lecturer
Department of Pharmaceutical Biology and Pharmacology
Victorian College of Pharmacy, Monash University
381 Royal Parade, Parkville VIC 3010
[EMAIL PROTECTED]
+61 3 9903 9524
-
When the only tool you own is a hammer, every problem begins to resemble
a nail.

  



-- 
Sridhar Acharya, M
Senior Research Fellow
Lab of Computational Biology
CDFD, Gandipet Campus
Hyderabad. AP. INDIA
http://www.cdfd.org.in
email: [EMAIL PROTECTED]
Phone: Lab: 08413-235467*2044
Mobile: 9866147193




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[gmx-users] MD continuation runs in serial but not in parallel

2006-07-03 Thread Sridhar Acharya

Dear GMX users,
I used grompp with -t option to continue a serially run simulation to 
run in parallel. I have given gen_vel = no in the .mdp file.
But mdrun with -np 2 stops and reports the following error. (md.log 
file is given below)

The same simulation could be continued in serial without any error.
What is the cause for this descrepancy? Any parameters to be set?
#
Going to use C-settle (5335 waters)
wo = 0.888096, wh =0.0559521, wohh = 18.0154, rc = 0.081665, ra = 0.00645837
rb = 0.051255, rc2 = 0.16333, rone = 1, dHH = 0.16333, dOH = 0.1

Constraining the coordinates at t0-dt (step -1)
  Rel. Constraint Deviation:  Maxbetween atoms RMS
  Before LINCS 0.42   4862   4887   0.07
   After LINCS 0.49   4880   4881   0.10

Started mdrun on node 0 Mon Jul  3 18:48:47 2006
Initial temperature: 301.39 K
Grid: 17 x 14 x 19 cells
  Step   Time Lambda  Annealing
 00.00.01.0

  Rel. Constraint Deviation:  Maxbetween atoms RMS
  Before LINCS 0.058480   3573   3574   0.005918
   After LINCS 0.000140   3842   3844   0.20


t = 0.000 ps: Water molecule starting at atom 17176 can not be settled.
Check for bad contacts and/or reduce the timestep.Wrote pdb files with 
previous and current coordinates

  Energies (kJ/mol)
  G96AngleProper Dih.  Improper Dih.  LJ-14 Coulomb-14
   8.10484e+033.58568e+032.61866e+031.41412e+034.86285e+04
   LJ (SR)   Coulomb (SR)   Coulomb (LR)  PotentialKinetic En.
   2.14166e+08   -5.54411e+05   -1.31762e+052.13544e+08nan
  Total EnergyTemperature Pressure (bar)
   nannannan
##

--
Sridhar Acharya, M
Senior Research Fellow
Lab of Computational Biology
CDFD, Gandipet Campus
Hyderabad. AP. INDIA
http://www.cdfd.org.in
email: [EMAIL PROTECTED]
Phone: Lab: 08413-235467*2044
Mobile: 9866147193


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[gmx-users] Can a Serial MD simulation be continued in Parallel?

2006-06-29 Thread Sridhar Acharya

Dear GMX-users

I want to know whether a MD simulation that was run as a serial job 
could be continued in parallel using tpbconv?

If so, how to give the number of processors for the command?

Regards,

sridhar

--
Sridhar Acharya, M
Senior Research Fellow
Lab of Computational Biology
CDFD, Gandipet Campus
Hyderabad. AP. INDIA
http://www.cdfd.org.in
email: [EMAIL PROTECTED]
Phone: Lab: 08413-235467*2044
Mobile: 9866147193


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Re: Re: [gmx-users] Can a Serial MD simulation be continued in, Parallel?

2006-06-29 Thread Sridhar Acharya

Hi,

But will that not do a new simulation  rather than an exact continuation of the 
previous simulation?


sridhar


--

Message: 4
Date: Thu, 29 Jun 2006 18:48:45 +1000
From: Mark Abraham [EMAIL PROTECTED]
Subject: Re: [gmx-users] Can a Serial MD simulation be continued in
Parallel?
To: Discussion list for GROMACS users gmx-users@gromacs.org
Message-ID: [EMAIL PROTECTED]
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Sridhar Acharya wrote:


Dear GMX-users

I want to know whether a MD simulation that was run as a serial job 
could be continued in parallel using tpbconv?

If so, how to give the number of processors for the command?
 

There's no reason you couldn't use grompp with the .trr and .edr files 
as inputs to generate a .tpr for a different number of processors. There 
must be a numerical perturbation to your model physics in doing so - 
you're adding up lists of numbers in different orders - but the effect 
should be negligible within the MM approximation. Mark 
--


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[gmx-users] Need topology for selenomethionine

2006-06-14 Thread Sridhar Acharya

Hi all,
Has anybody built a gromax topology for selenomethionine?
How the topology can be incorporated into the existing gromacs topology 
files?


thanks in advance.
sridhar

--
Sridhar Acharya, M
Senior Research Fellow
Lab of Computational Biology
CDFD, Gandipet Campus
Hyderabad. AP. INDIA
http://www.cdfd.org.in
email: [EMAIL PROTECTED]
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[gmx-users] problem with selenomethionine residues

2006-06-13 Thread Sridhar Acharya

Hi,
When I am running the mdrun for position restrain the program terminates 
giving the following error. The protein molecule contains 16 selenomethionine residues,

the topology for which was got from the PRODRG server.

When run in GROMACS 3.2.1 version
===
Wrote pdb files with previous and current coordinates
Fatal error: ci = -2147483648 should be in 0 .. 6782 [FILE nsgrid.c, LINE 
218] 


When run in GROMACS 3.3.1 version
===
Fatal error:
Too many LINCS warnings (12461) - aborting to avoid logfile runaway.
This normally happens when your system is not sufficiently equilibrated,or 
if you are changing lambda too fast in free energy simulations. 
If you know what you are doing you can adjust the lincs warning threshold 
in your mdp file, but normally it is better to fix the problem.


Looking forward for ur response,
regards


sridhar

--
Sridhar Acharya, M
Senior Research Fellow
Lab of Computational Biology
CDFD, Gandipet Campus
Hyderabad. AP. INDIA
http://www.cdfd.org.in
email: [EMAIL PROTECTED]
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[gmx-users] Problem with continuation of simulation

2006-06-06 Thread Sridhar Acharya

Hello,

I had carried out a 20ns protein simulation on Gromacs v3.2.1. Later I 
continued the simulation on Gromacs v3.3.
I ran the following command supplying the energy file and trajectory 
file. But the program gave error and stopped (log message is given below).


Since I read that supply of energy file is not absolutely required. I 
again ran tpbconv without -e option for another 10ns. This time the 
program ran with the warning message that the continuation will not be 
exact.
WARNING: The simulation uses pressure and/or Nose-Hoover temperature 
coupling,
the continuation will only be exact when an energy file is 
supplied.


When I plotted the trajectory of the Potential energy, I found the 
difference, with PE much below than the previous simulation (PE dropped 
from -559000 to -561000). Can I use the data of this additional 
simulation, or is it a drastic variation, that I need to take care of?


Thank you,
expecting your suggessions.

##
[EMAIL PROTECTED] TRAJEC_WT]$  tpbconv  -s 
../OTHERS_WT/b4md_1cyp_WT.tpr -f rerereafter15_WT.trr  -e 
../OTHERS_WT/rerereafter15_WT.edr -o new.tpr -until 3



  :-)  G  R  O  M  A  C  S  (-:

 Gromacs Runs On Most of All Computer Systems

:-)  VERSION 3.3  (-:


 Written by David van der Spoel, Erik Lindahl, Berk Hess, and others.
  Copyright (c) 1991-2000, University of Groningen, The Netherlands.
Copyright (c) 2001-2004, The GROMACS development team,
   check out http://www.gromacs.org for more information.

This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

  :-)  tpbconv  (-:

Option Filename  Type Description

 -s ../OTHERS_WT/b4md_1cyp_WT.tpr  InputGeneric run input: tpr tpb
  tpa xml
 -f rerereafter15_WT.trr  Input, Opt!  Full precision trajectory: trr trj
 -e ../OTHERS_WT/rerereafter15_WT.edr  Input, Opt!  Generic energy: edr ene
 -n  index.ndx  Input, Opt.  Index file
 -onew.tpr  Output   Generic run input: tpr tpb tpa xml

 Option   Type  Value  Description
--
 -[no]h   bool no  Print help info and quit
 -[no]X   bool no  Use dialog box GUI to edit command line options
  -niceint  0  Set the nicelevel
  -time   real -1  Continue from frame at this time (ps) instead of
   the last frame
-extend   real  0  Extend runtime by this amount (ps)
 -until   real  3  Extend runtime until this ending time (ps)
 -[no]zeroq   bool no  Set the charges of a group (from the index) to
   zero
-[no]unconstrained
  boolyes  For a continuous trajectory, the constraints
   should not be solved before the first step
   (default)

Reading toplogy and shit from ../OTHERS_WT/b4md_1cyp_WT.tpr
Reading file ../OTHERS_WT/b4md_1cyp_WT.tpr, VERSION 3.1.4 (single precision)
Note: tpx file_version 24, software version 40
Note: nLincsIter not in run input file, setting it to 1
Modifying ir-bUncStart to TRUE

READING COORDS, VELS AND BOX FROM TRAJECTORY rerereafter15_WT.trr...

trn version: GMX_trn_file (single precision)
Read frame684: step 341344 time 2.000

Using frame of step 341344 time 2
Opened ../OTHERS_WT/rerereafter15_WT.edr as single precision energy file
Reading frame 60 time 19917.312
---
Program tpbconv, VERSION 3.3
Source code file: enxio.c, line: 358

Fatal error:
Could not find energy term named 'Pcoupl-Mu-XX'
---

Stop Drinking My Beer ! (The Amps)
#

--
Sridhar Acharya, M
Senior Research Fellow
Lab of Computational Biology
CDFD, Gandipet Campus
Hyderabad. AP. INDIA
http://www.cdfd.org.in
email: [EMAIL PROTECTED]
Phone: Lab: 08413-235467*2044
Mobile: 9866147193


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