# OpenQuake for Advanced Users¶

Latest (master) PDF version: https://docs.openquake.org/oq-engine/advanced/OpenQuakeforAdvancedUsers.pdf

Contents:

- Introduction
- Common mistakes: bad configuration parameters
- Tips for running large hazard calculations
- Tips for running large risk calculations
- The asset loss table
- Logic trees FAQ
- The concept of effective realizations
- Reduction of the logic tree
- How to analyze the logic tree of a calculation without running the calculation
- Source Specific Logic Trees
- Logic tree sampling strategies
- Rupture sampling: how does it work?
- Extra tips specific to event based calculations
- The concept of “mean” ground motion field
- Site-specific classical calculations
- Extracting data from calculations
- Reading outputs with pandas
- Parametric GMPEs
- MultiPointSources
- MultiFaultSources
- How the parallelization works in the engine
- Special features of the engine
- The point source gridding approximation
- How the hazard sites are determined
- Extended consequences
- The conditional spectrum calculator
- Correlation of Ground Motion Fields
- Scenarios from ShakeMaps
- New risk features
- Risk profiles
- Developing with the engine
- Architecture of the OpenQuake engine
- Some useful oq commands
- Limitations of Floating-point Arithmetic