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21cmFAST 0.0.1.dev472+gb0eaa2863.d20260130 documentation
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  • Installation
  • Quickstart
  • Tutorials
    • Defining Simulation Inputs
    • Running and Plotting Coeval Cubes
    • Running and Plotting LightCones
    • Accessing evolutionary Coeval data
    • Using the CLI
    • Exploring the Impact of Mini-Halos
    • Adding DM-Baryon Relative Velocities
    • Halo Sampling in 21cmFAST
    • Redshift Space Distortions
  • FAQs
    • Installation FAQ
    • Miscellaneous FAQs
  • Changes from 21cmFAST v3 to v4
  • Acknowledging

Development

  • Install as a Developer
  • Contributing
  • Developer Documentation
  • License
  • Changelog
  • Authors
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FAQs¶

  • Installation FAQ
    • Errors with “recompile with -fPIC” for FFTW
  • Miscellaneous FAQs
    • My run seg-faulted, what should I do?
    • Configuring 21cmFAST
    • How can I read a Coeval object from disk?
    • How can I read a LightCone object from file?
    • Can I instantiate my own OutputStruct objects?
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Installation FAQ
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Redshift Space Distortions
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Last updated on Jan 30, 2026