FDiscover



Contents

Release 2000, March 2000



Contents

1. Introduction

What Is the Discover® program?
The FDiscover program--the Insight and standalone modes of operation
Comparison of FDiscover and CDiscover
Starting the FDiscover program
Using this guide
Additional information
Note on documentation of command names
The Insight mode of running the FDiscover program
Standalone mode of the FDiscover program

2. Application--The Insight Environment

Command summary
Outline of using FDiscover within Insight
Methodology
Setting up the calculation
Types of calculations
Minimization
Dynamics
Using constraints and restraints
Other parameters
Analyzing the results

3. Application--Standalone Version

User interface
Input files required for the Discover program
The Discover command input file (.inp)
The Cartesian coordinate and molecular data files (.car and .mdf files)
Selecting a forcefield file (.frc/.bin)
Submitting the Discover job
Job status
Output files produced by the Discover program
Methodology
Step 1: Setting up the energy
Step 2: Types of calculations
Minimization
Molecular dynamics
Free energy calculations
Analysis of results
Miscellaneous commands
Discover Simulation Language (DSL)

4. Tutorial

Pilot online tutorials
Overview of tutorial lessons
Lesson 1: Minimizing and performing molecular dynamics
Lesson 2: Relative free energy
Lesson 3: Using pseudoatoms
Lesson 4: Consensus dynamics/minimization
Lesson 5: Minimizing the magainin peptide--standalone mode
Lesson 6: Conformational search by high-temperature dynamics--standalone mode


APPENDICES

A. Commands and DSL--Standalone Mode

Discover Simulation Language syntax
Procedure command statement
Arithmetic replacement statement
Logical if statement
Unconditional goto statement
Print using statement
Format statement
Comment statement
Continuation statement
End statement
Syntax checking
Command documentation format
Command descriptions
archive
assign angle name
assign atom pair name
assign torsion name
begin
calculate absolute
calculate relative
comparison list generation
constrain
define average atom
enclose
fix
fixed atom list generation
force
initialize
interaction
intermolecular interaction
log
minimize
print
pull
randomize coordinates
read
reduce output
restart dynamics
restrain
resume dynamics
retrieve
rms
rotors
scale
set
tabulate
template force
tethered atom list generation
vibrational
warp
Parameters accessible from DSL
Parameters affecting minimization
Atom overlap
Movement limit
Precision of line minimization
Conjugate gradient formula
Parameters affecting dynamics
Temperature control via direct velocity scaling
Temperature control via coupling to a temperature bath
Temperature initialization
Pressure control via coupling to a pressure bath
Miscellaneous
Parameters controlling forcefields
Nonbond energy cutoff parameters
Template forcing
Miscellaneous
Parameters controlling periodic boundary conditions
Parameters controlling restraints
Parameters controlling electric field calculations
Parameters affecting parallel running of the FDiscover program

B. Files

Introduction
Command input file (.inp)
Sample FDiscover .inp File
Forcefield parameter file (.frc)
Molecular template file (.tem)
Standard output file (.out)
Discover dynamics restart files (.ors and .rst)
Log file (.ref)
Progress report file (.pek)
Automatic potential parameter assignment file (.prm)
Torsion file (.tor)
Dynamics tabular output for energies (.gre)
Dynamics tabular output for thermodynamic states (.grp)
Dynamics scratch file (.pre)
Vibrational frequencies and eigenvectors (.frq)
Internal coordinate eigenvectors (.nmo)
Warped parameter output file (.wrp)
Free energy running averages table (.tot)
Comparison list file (.cli)
Free energy scratch file (.xxx)
Relative free energy table for convergence plots (.tbl)

C. Utilities

Discover utilities
binff
dirtoseq
formhis
seqtodir
uformhis

List of Figures

List of Tables

Index



Last updated March 8, 2000.
Copyright © 2000, Molecular Simulations, Inc. All rights reserved.