Re: [gmx-users] system far from the equilibration state
Thanks for your reply. How would I know that when I get close to the equilibration state? By Pressure, Temperature,or RMSD plots? Thanks in advance for your suggestions. Sincerely, Shima From: Justin Lemkul jalem...@vt.edu To: Shima Arasteh shima_arasteh2...@yahoo.com; Discussion list for GROMACS users gmx-users@gromacs.org Sent: Monday, February 4, 2013 11:37 PM Subject: Re: [gmx-users] system far from the equilibration state On 2/4/13 2:04 PM, Shima Arasteh wrote: Hi, I am simulating a system of peptide/membrane/water. If my system is far from the equilibration, would that be correct if I use Berendsen pressure coupling for nano seconds to do NPT equilibration and then change it to Parrinello-Rahman to get the true pressure? Anybody may suggest me please? Sounds reasonable. Berendsen is a useful method in such cases. -Justin -- Justin A. Lemkul, Ph.D. Research Scientist Department of Biochemistry Virginia Tech Blacksburg, VA jalemkul[at]vt.edu | (540) 231-9080 http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin -- gmx-users mailing listgmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! * Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
Re: [gmx-users] system far from the equilibration state
On 2/7/13 4:50 AM, Shima Arasteh wrote: Thanks for your reply. How would I know that when I get close to the equilibration state? By Pressure, Temperature,or RMSD plots? There are no absolutes, and it also depends on what one means by converged or equilibrated. If we're talking about initial NVT/NPT equilibration steps where the solute of interest is restrained in some way, simple analysis of temperature and pressure is likely sufficient to demonstrate that the ensemble is stable. If we're talking about trying to determine equilibrium sampling, that's something else entirely and likely will involve protein-specific and/or lipid-specific metrics. -Justin Thanks in advance for your suggestions. Sincerely, Shima From: Justin Lemkul jalem...@vt.edu To: Shima Arasteh shima_arasteh2...@yahoo.com; Discussion list for GROMACS users gmx-users@gromacs.org Sent: Monday, February 4, 2013 11:37 PM Subject: Re: [gmx-users] system far from the equilibration state On 2/4/13 2:04 PM, Shima Arasteh wrote: Hi, I am simulating a system of peptide/membrane/water. If my system is far from the equilibration, would that be correct if I use Berendsen pressure coupling for nano seconds to do NPT equilibration and then change it to Parrinello-Rahman to get the true pressure? Anybody may suggest me please? Sounds reasonable. Berendsen is a useful method in such cases. -Justin -- Justin A. Lemkul, Ph.D. Research Scientist Department of Biochemistry Virginia Tech Blacksburg, VA jalemkul[at]vt.edu | (540) 231-9080 http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin -- gmx-users mailing listgmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! * Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
[gmx-users] system far from the equilibration state
Hi, I am simulating a system of peptide/membrane/water. If my system is far from the equilibration, would that be correct if I use Berendsen pressure coupling for nano seconds to do NPT equilibration and then change it to Parrinello-Rahman to get the true pressure? Anybody may suggest me please? Thanks in advance. Sincerely, Shima -- gmx-users mailing listgmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! * Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
Re: [gmx-users] system far from the equilibration state
On 2/4/13 2:04 PM, Shima Arasteh wrote: Hi, I am simulating a system of peptide/membrane/water. If my system is far from the equilibration, would that be correct if I use Berendsen pressure coupling for nano seconds to do NPT equilibration and then change it to Parrinello-Rahman to get the true pressure? Anybody may suggest me please? Sounds reasonable. Berendsen is a useful method in such cases. -Justin -- Justin A. Lemkul, Ph.D. Research Scientist Department of Biochemistry Virginia Tech Blacksburg, VA jalemkul[at]vt.edu | (540) 231-9080 http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin -- gmx-users mailing listgmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! * Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
