Re: [gmx-users] energy minimization of a charged system in vacuum

2011-02-02 Thread devicerandom
On 30/01/11 16:13, David van der Spoel wrote: On 2011-01-30 17.08, ms wrote: On 30/01/11 15:41, David van der Spoel wrote: Since I have exactly the same needs (charged system in vacuum) I jump in... In http://www.gromacs.org/Documentation/Errors it says: Note for PME users: It is possible to

Re: [gmx-users] energy minimization of a charged system in vacuum

2011-02-02 Thread devicerandom
On 30/01/11 16:13, David van der Spoel wrote: On 2011-01-30 17.08, ms wrote: Since I have exactly the same needs (charged system in vacuum) I jump in... In http://www.gromacs.org/Documentation/Errors it says: Note for PME users: It is possible to use a uniform neutralizing background charge in

Re: [gmx-users] energy minimization of a charged system in vacuum

2011-01-30 Thread David van der Spoel
On 2011-01-30 17.08, ms wrote: On 30/01/11 15:41, David van der Spoel wrote: My question is what effect does running a simulation with a charged system have? I recall reading that something related to PME calculations assumes the system is neutral, but it did not specify whether it was referrin

Re: [gmx-users] energy minimization of a charged system in vacuum

2011-01-30 Thread ms
On 30/01/11 15:41, David van der Spoel wrote: My question is what effect does running a simulation with a charged system have? I recall reading that something related to PME calculations assumes the system is neutral, but it did not specify whether it was referring to MD or EM. From the mailing

Re: [gmx-users] energy minimization of a charged system in vacuum

2011-01-30 Thread David van der Spoel
On 2011-01-30 16.02, ms wrote: On 29/01/11 05:08, Matt Chan wrote: Perfect. This is great reading. Thanks for the pointers Mark. Matt On 01/28/2011 06:50 PM, Mark Abraham wrote: On 29/01/2011 9:57 AM, Matthew Chan wrote: Hi, I'm a first time GROMACS user. I've got 2 questions, which I'll

Re: [gmx-users] energy minimization of a charged system in vacuum

2011-01-30 Thread ms
On 29/01/11 05:08, Matt Chan wrote: Perfect. This is great reading. Thanks for the pointers Mark. Matt On 01/28/2011 06:50 PM, Mark Abraham wrote: On 29/01/2011 9:57 AM, Matthew Chan wrote: Hi, I'm a first time GROMACS user. I've got 2 questions, which I'll ask in separate emails. The firs

Re: [gmx-users] energy minimization of a charged system in vacuum

2011-01-28 Thread Matt Chan
Perfect. This is great reading. Thanks for the pointers Mark. Matt On 01/28/2011 06:50 PM, Mark Abraham wrote: On 29/01/2011 9:57 AM, Matthew Chan wrote: Hi, I'm a first time GROMACS user. I've got 2 questions, which I'll ask in separate emails. The first is about running EM on a charged p

Re: [gmx-users] energy minimization of a charged system in vacuum

2011-01-28 Thread Mark Abraham
On 29/01/2011 9:57 AM, Matthew Chan wrote: Hi, I'm a first time GROMACS user. I've got 2 questions, which I'll ask in separate emails. The first is about running EM on a charged protein in vacuum. I'm presently walking through some of the tutorials and trying to simplify them for my purpose

[gmx-users] energy minimization of a charged system in vacuum

2011-01-28 Thread Matthew Chan
Hi, I'm a first time GROMACS user. I've got 2 questions, which I'll ask in separate emails. The first is about running EM on a charged protein in vacuum. I'm presently walking through some of the tutorials and trying to simplify them for my purposes. One is the energy minimization of the 1AKI lys