Re: [gmx-users] Speeding things up

2009-08-14 Thread Borys Szefczyk
On Fri, Aug 14, 2009 at 10:50:29AM +0200, Berk Hess wrote: > > Hi, > > For systems with vacuum the automatic domain decomposition setup does > not do a good job. It currently decomposes based on the box dimensions, > not on the actual atom distribution in the box. > I was thinking of improving th

[gmx-users] Speeding things up

2009-08-14 Thread Borys Szefczyk
is running on 8 cores of a single machine. I would appreciate suggestions, Borys Szefczyk -- REQUIMTE, & Molecular Modelling & Quantum Chemistry Group, Department of Chemistry, & Institute of Physical & Theoretical Chemistry, Faculty of Scie

Re: [gmx-users] Scaled 1-5 interactions

2009-06-07 Thread Borys Szefczyk
On Sun, Jun 07, 2009 at 05:35:14PM +0200, Florian Dommert wrote: > Glad to hear the my help works. Setting the LJ parameters zero for the > should avoid a further contribution of the LJ part from the defined 1-5 > IA, since they are already present in the nonbonded part of the > interaction types.

Re: [gmx-users] Scaled 1-5 interactions

2009-06-07 Thread Borys Szefczyk
On Sat, Jun 06, 2009 at 02:06:56PM +0200, Florian Dommert wrote: > * David van der Spoel [2009-06-06 08:06:26 +0200]: >> The VDW may work, but not differently scaled 1-4 and 1-5 coulomb >> interactions. > > Where is the matter if I have a [ pairs ] directive in the itp file like > this : > > >

Re: [gmx-users] Scaled 1-5 interactions

2009-06-05 Thread Borys Szefczyk
On Fri, Jun 05, 2009 at 10:31:22AM +1000, Mark Abraham wrote: > Setting the number of exclusions for a moleculetype to 4, in a forcefield > with "generate_pairs = yes" and "fudgeLJ = 0.5" will probably see pdb2gmx > get everything except the 1-5 interactions right. Then you post-process the > .t

[gmx-users] Scaled 1-5 interactions

2009-06-04 Thread Borys Szefczyk
there a way to do this within the topology file of Gromacs or do I need to modify the code? Regards, Borys Szefczyk -- REQUIMTE, & Molecular Modelling & Quantum Chemistry Group, Department of Chemistry, & Institute of Physical & Theoretical Chemistry,

[gmx-users] g_msd

2009-04-20 Thread Borys Szefczyk
erse order, first CL, then NA, I get: D[ CL-] = 6.4607e-5 cm^2/s D[ NA+] = 4.2326e-5 cm^2/s Again, first plot look fine, the second - not. Why these results differ? Regards, Borys Szefczyk -- REQUIMTE, & Molecular Modelling & Quantum Chemistry Group, Depar