Re: [AMBER-Developers] force-field naming (redux)

From: Ross Walker <>
Date: Sun, 8 Mar 2015 18:26:52 -0700

> On Mar 8, 2015, at 6:18 PM, Jason Swails <> wrote:
>> On Mar 8, 2015, at 3:40 PM, Ross Walker <> wrote:
>> I would like there to be a 'default' force field that is either:
>> 1) Loaded by leap by default.
>> 2) Loaded with 'source leaprc.default'
>> This would make things a lot simpler for beginning users. Option 1 might prove troublesome since I don't know how well one can unload parameter sets in leap if you wanted to switch things out so option 2 with documentation might be optimal.
> I think choosing a force field should be deliberate. (1) is already possible if you decide what force field you like best and name that file “leaprc”. (2) is also avoiding a deliberate choice. Deliberation reinforces the importance of choosing a force field, even if they just pick the one we suggest they use (because the act of typing “source leaprc.ff14SB” tells them what they’re using).
> I think better tutorials (like B0 from Ben and you) are more important than providing a way of putting off (indefinitely?) learning about the concept of force field choices and selection.

But this is my whole point. I very much think we SHOULD decide on a force field for people - At the very least we should say - if you don't know which force field to use this is what the AMBER developers recommend as the current state of the art. If you are an expert then feel free to change this but if you don't know the differences etc then this is what you should use.

The problem with the tutorials is that it is impossible to keep them up to date - so people still see FF99SB etc and it just confuses the hell out of people.

The way to make more people use our code is to make it as simple to use as possible. Giving people more rope than they need to hang themselves is just a bad idea. This is why Charmm is so impenetrable to new users for example.

All the best

|\oss Walker

| Associate Research Professor |
| San Diego Supercomputer Center |
| Adjunct Associate Professor |
| Dept. of Chemistry and Biochemistry |
| University of California San Diego |
| NVIDIA Fellow |
| | |
| Tel: +1 858 822 0854 | EMail:- |

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Received on Sun Mar 08 2015 - 18:30:05 PDT
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