Chapter 4. Using APBS

Table of Contents

Invocation
Input files
READ statements
ELEC statements
PRINT statements
Using APBS with other programs
Graphical user interfaces
Simulation software
Visualization software

Invocation

As mentioned in the Installation intructions, the main APBS binary is installed in ${FETK_PREFIX}/bin/${prefix}/ where ${prefix} is a machine-specific directory. Of course, you can move the binary to any directory you choose. APBS is invoked with a very simple syntax:

apbs input-file

where input-file is an input file with a specific syntax described in the APBS Input File section of this manual. Besides the output files specified in input-file, APBS writes data to three additional places:

  • Standard output. This will appear on your screen (if you don't redirect it somewhere) and will contain all the basic information about the electrostatics calculation.

  • Standard error. This will also appear on your screen (if you don't redirect it somewher) and will contain warnings and error messages.

  • The file io.mc (or io.mc_N for parallel runs, where N is the processor ID. This gives you detailed information about the progress of the run with a particular focus on the numerical solver.