Enzo Tutorials

More general information can be found in the UserGuide.

If you add new pages, please update one of the Table of Contents macros below.

Running Enzo

Table of Contents

1. How to run an Enzo test problem
   1. ShockPool3D test
   2. GravityTest test
   3. Other Tests & Notes
      1. PressurelessCollapse
      2. Input Files
   4. Outputs
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2. How to run a cosmology simulation
   1. Creating initial conditions
   2. Parallel IO - the ring tool
   3. Running an Enzo cosmology simulation
3. Cosmology Step by Step
   1. Obtaining the Enzo package
      1. Download
      2. Subversion Checkout
   2. Compiling Enzo
   3. Running an Enzo Cosmology Simulation
      1. Creating Initial Conditions
      2. Parallel IO Using Ring
      3. Nested Initial Conditions and Particles
      4. Running an Enzo cosmology simulation
   4. Example Data and Analysis
4. Sample inits and Enzo parameter files
5. Writing Enzo Parameter Files
   1. Initialization parameters
   2. Cosmology
   3. Gravity and Particle Parameters
   4. Adiabatic hydrodynamics parameters
   5. AMR Hierarchy Control Parameters
      1. Multiple nested grids
      2. Nested Grids and Particles
   6. I/O Parameters
   7. Radiative Cooling and UV Physics Parameters
   8. Star Formation and Feedback Physics Parameters
   9. IO Parallelization Options
   10. Notes
6. Controlling Enzo data output
   1. Data Formats and Files
      1. Packed AMR
      2. Not Packed AMR
      3. Pitfall - Hard Coded Pathnames
   2. Timing Methods
      1. Cycle Based Output
      2. Time Based Output
      3. Redshift Based Output
      4. Force Output Now
      5. Sub Cycle Based Output
      6. Time Based Interpolated Output
   3. Friendly Note on Data Output
7. The details of ParallelRootGridIO
   1. Background: why it is how it is
   2. Short version
      1. Input/Restart
      2. Output
      3. Initialization
      4. Setup and Allocation
   3. Partition TopGrid and /* bad kludge */
8. Estimate of processor counts needed for different Enzo simulations and …
   1. Cosmology or non-cosmology unigrid (non-AMR) simulations
   2. Cosmology adaptive mesh simulations
   3. Non-cosmology adaptive mesh simulations

Modifying Enzo

Table of Contents

1. Float is double (controlling variable precision in Enzo)
   1. Floating-point precision
   2. Integer precision
   3. precision macros and printf/scanf
   4. The Fortran-C++ interface
   5. If you need more details…
2. Adding a new parameter to Enzo
3. Adding new refinement criteria
   1. Writing your code to flag cells
   2. Call your method
4. How to add a new baryon field
5. Branching and Merging: The Short Version
6. Diffing Copies
   1. Set Up: Add and remove a file
   2. Revision vs. Working Directory
   3. Diffing Between Copies
   4. Copy vs. Working Directory
   5. Copy vs. Copy
7. More Diff
   1. Local vs Repository
   2. Brief Diffing
   3. Lazy?
8. Adding a new Local Operator.