Re: [gmx-users] Energy drift combining tabulated potentials and group cut-off.

2017-09-05 Thread serpercon
Hello, My apollogies, the drift is present whether I use tabulated potentials or not. The email's title I chose is misleading. If I am not mistaken I am using a buffer when I put rcut= 1.0 and rlist=1.3 , but this was not entirely clear to me using with the manual. Sergio El 05/09/2017

Re: [gmx-users] Energy drift combining tabulated potentials and group cut-off.

2017-09-04 Thread serpercon
Hello, Thank you very much for your thoughtfull response. The structural properties seem to be represented correctly so I guess it should work. I know that drifts are something we must live with but since it appeared when changing the system to a tabulated potential+a group cutoff I was not sure

[gmx-users] Energy drift combining tabulated potentials and group cut-off.

2017-09-01 Thread serpercon
Dear GROMACS Community, I am trying to do a simulation using a tabulated potential which forces me to use the group cut-off. I get a drift in the conserved quantity of -600KJ/mol/ns. My system consists of 1000 rigid TIP4P water molecules and a Na+ ion. I imagine that eventhough it will soon be