Re: [gmx-users] Gromacs 4.5.1 on 48 core magny-cours AMDs

2010-10-21 Thread Ondrej Marsalek
Hi, FWIW, I have recently asked about this in the hwloc mailing list: http://www.open-mpi.org/community/lists/hwloc-users/2010/10/0232.php In general, hwloc is a useful tool for these things. http://www.open-mpi.org/projects/hwloc/ Best, Ondrej On Thu, Oct 21, 2010 at 12:03, Carsten Kutzner

Re: [gmx-users] Re: Problem with pressure coupling

2010-10-07 Thread Ondrej Marsalek
Hi, thanks for fixing this, Berk. Silly me, I did not include RESOLVED bugs in my original search and therefore missed it. Ondrej On Thu, Oct 7, 2010 at 12:38, Berk Hess wrote: > Hi, > > It's bugzilla 579: > http://bugzilla.gromacs.org/show_bug.cgi?id=579 > Actually the title is wrong, the pre

Re: [gmx-users] Re: Problem with pressure coupling

2010-10-07 Thread Ondrej Marsalek
On Wed, Sep 29, 2010 at 21:56, David van der Spoel wrote: > > After setting nstcalcenergy = 1 I get > Density        996.894        1.2    3.85083    1.86718  (kg/m^3) > > In other words the bug can be circumvented by setting this variable to 1. I > will file a bugzilla. > Is this bug in now? I c

Re: [gmx-users] Re: Problem with pressure coupling

2010-09-29 Thread Ondrej Marsalek
On Wed, Sep 29, 2010 at 21:56, David van der Spoel wrote: > > > Now the differences in the tpr files are revealing: > [anfinsen:test-volume-drift] % gmxcheck -s1 topol405.tpr -s2 topol.tpr > > Note: tpx file_version 58, software version 73 > Reading file topol.tpr, VERSION 4.5.1-%ci-21e8a32 (sing

[gmx-users] Re: Problem with pressure coupling

2010-09-29 Thread Ondrej Marsalek
the drift in box volume when run in 4.5.1. Of course, it will not run in 4.0.7, so there is no way of testing that. Thanks for any help on this, Ondrej On Thu, Sep 23, 2010 at 15:16, Ondrej Marsalek wrote: > Dear all, > > running a box of neat water with the below mdp file in GROM

[gmx-users] Problem with pressure coupling

2010-09-24 Thread Ondrej Marsalek
Dear all, running a box of neat water with the below mdp file in GROMACS 4.5.1 results in a fast linear increase of the volume of the box, the water getting torn into clusters. The same simulation in 4.0.7 (with nstcalcenergy removed, of course) runs just fine, with the box volume stable and fluct

[gmx-users] Re: Problem with pressure coupling

2010-09-24 Thread Ondrej Marsalek
= 0.8 rcoulomb = 1 rvdw-switch = 0.8 rvdw = 1 On Thu, Sep 23, 2010 at 15:16, Ondrej Marsalek wrote: > Dear all, > > running a box of neat water with the below mdp file in GROMACS 4.5.1 > results in a fast linear increase of t

Re: [gmx-users] GMXRC missing

2010-08-11 Thread Ondrej Marsalek
Hi, thanks for the fix. Best, Ondrej On Wed, Aug 11, 2010 at 08:46, Rossen Apostolov wrote: >  Hi, > > I commited a patch in the latest git. > > Thanks for reporting, > Rossen > > On 8/10/10 4:13 PM, Ondrej Marsalek wrote: >> >> Dear all, >> >&g

[gmx-users] GMXRC missing

2010-08-10 Thread Ondrej Marsalek
Dear all, I have installed 4.5 beta2 using cmake and it seems that the GMXRC files are missing in the installation. Can anyone confirm this? Best, Ondrej -- gmx-users mailing listgmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www

Re: [gmx-users] Normalization in g_rdf

2009-11-24 Thread Ondrej Marsalek
Ah, now I see what you meant. Then it is fine. That is a separate issue and is not really a problem for me. Thank you, Ondrej On Tue, Nov 24, 2009 at 17:39, Berk Hess wrote: > Hi, > > Sure g_rdf takes care of pressure coupling, but the cut-off of the rdf plot > is set from the initial frame. >

Re: [gmx-users] Normalization in g_rdf

2009-11-24 Thread Ondrej Marsalek
Hi again, I thought pressure coupling is handled by g_rdf. Looking at the code, it seems that the block starting with: /* Must init pbc every step because of pressure coupling */ takes care of that, so even with a relatively big volume change at the beginning, it should not be a problem. Is

Re: [gmx-users] Normalization in g_rdf

2009-11-24 Thread Ondrej Marsalek
On Tue, Nov 24, 2009 at 11:12, Berk Hess wrote: > Hi, > > If you have N molecules with total volume which is significantly less than > the unit-cell, > as is the case for ions in solvent, the RDF of the N molecules againt > themselves > will converge to (N-1)/N. > > Berk Hi, thanks for the remin

Re: [gmx-users] Normalization in g_rdf

2009-11-24 Thread Ondrej Marsalek
On Tue, Nov 24, 2009 at 13:01, Omer Markovitch wrote: > > On Tue, Nov 24, 2009 at 02:27, Ondrej Marsalek > wrote: >> >> Dear all, >> >> I would like to understand better the way g_rdf performs >> normalization. I have two unexpected results: >> &

[gmx-users] Normalization in g_rdf

2009-11-23 Thread Ondrej Marsalek
Dear all, I would like to understand better the way g_rdf performs normalization. I have two unexpected results: 1) In a simple simulation of atomic ions in water in a cubic box, I get RDFs that clearly reach a constant value at large enough distances, but that value is somewhat lower than one. T

Re: [gmx-users] Segfaults with trjconv and g_dist

2009-11-16 Thread Ondrej Marsalek
s "protein" and counterions. Any help or pointers appreciated, Ondrej On Mon, Nov 16, 2009 at 19:58, Ondrej Marsalek wrote: > I have just found that the problem (at least with trjconv) only > manifests if I include in the options "-pbc mol". I use a dodecahedron >

Re: [gmx-users] Segfaults with trjconv and g_dist

2009-11-16 Thread Ondrej Marsalek
on, Nov 16, 2009 at 19:54, Tsjerk Wassenaar wrote: > Hi Ondrej, > > Please paste the exact series of commands you used. That will make it > easier to indicate where errors are being introduced. > > Cheers, > > Tsjerk > > On Mon, Nov 16, 2009 at 6:53 PM, Ondrej Marsalek &

Re: [gmx-users] Segfaults with trjconv and g_dist

2009-11-16 Thread Ondrej Marsalek
> coordinate file from the .tpr matching the atoms in the .xtc file. > > Hope it helps, > > Tsjerk > > On Mon, Nov 16, 2009 at 6:22 PM, Ondrej Marsalek > wrote: >> Dear all, >> >> as a quick check, before I dive deeper, I would like to ask the following. &

[gmx-users] Re: Segfaults with trjconv and g_dist

2009-11-16 Thread Ondrej Marsalek
segfault Does anyone else see this, or am I doing something wrong? Will be happy to post more details if needed. Ondrej On Mon, Nov 16, 2009 at 18:22, Ondrej Marsalek wrote: > Dear all, > > as a quick check, before I dive deeper, I would like to ask the following. > > I ha

[gmx-users] Segfaults with trjconv and g_dist

2009-11-16 Thread Ondrej Marsalek
Dear all, as a quick check, before I dive deeper, I would like to ask the following. I have a simulation (protein in water and counterions) for which I have defined an xtc output group (protein and conunterions). If I try to run trjconv or g_dist over this xtc file (and a proper reduced index fil

Re: [gmx-users] g_sdf gives wrong refmol with multiple center molecules

2009-11-10 Thread Ondrej Marsalek
Hi, just for reference, I have filed a bug report on this (and one other issue with g_sdf): http://bugzilla.gromacs.org/show_bug.cgi?id=356 Best, Ondrej On Tue, Nov 10, 2009 at 16:35, Rasmus "Termo" Lundsgaard wrote: > Hi Atte > > Did you find a solution to this problem?? I'm doing the same c

[gmx-users] Dummy masses for the Amber FF

2009-11-10 Thread Ondrej Marsalek
Dear all, I have noticed that the .ddb file are not present in the port of the Amber FF available at http://chemistry.csulb.edu/ffamber/. Does anyone know if they are perhaps available elsewhere or if something has been done in this direction? Thanks for any information, Ondrej Marsalek -- gmx

Re: [gmx-users] pdb2gmx and virtual sites

2009-11-04 Thread Ondrej Marsalek
On Wed, Nov 4, 2009 at 20:41, Justin A. Lemkul wrote: > > > Ondrej Marsalek wrote: >> >> I thought that this was needed to convert the hydrogens to virtual >> sites, based on reading section 6.5 of the manual and some other >> things. Is this not correct? &g

Re: [gmx-users] pdb2gmx and virtual sites

2009-11-04 Thread Ondrej Marsalek
On Wed, Nov 4, 2009 at 20:41, Justin A. Lemkul wrote: > > > Ondrej Marsalek wrote: >> >> I thought that this was needed to convert the hydrogens to virtual >> sites, based on reading section 6.5 of the manual and some other >> things. Is this not correct? &g

Re: [gmx-users] pdb2gmx and virtual sites

2009-11-04 Thread Ondrej Marsalek
I thought that this was needed to convert the hydrogens to virtual sites, based on reading section 6.5 of the manual and some other things. Is this not correct? Ondrej On Wed, Nov 4, 2009 at 20:07, Justin A. Lemkul wrote: > > > Ondrej Marsalek wrote: >> >> Dear GROMACS

[gmx-users] pdb2gmx and virtual sites

2009-11-04 Thread Ondrej Marsalek
Dear GROMACS users, I would like to substitute hydrogens in a protein with virtual sites to allow for the 4-5 fs timestep mentioned in the GROMACS 4 paper and several other places. So far, I have not found an example or a tutorial that would involve this, so I want to create a straightforward exam

[gmx-users] Segfault with the v-rescale thermostat in Gromacs 4.0.3

2009-02-21 Thread Ondrej Marsalek
fine even in parallel. This looks like a bug to me, has anyone else seen this? Best regards, Ondrej Marsalek ___ gmx-users mailing listgmx-users@gromacs.org http://www.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.g