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===== Future Directions in Rayleigh =====
//last updated 2018 November 8//

=== Future Directions (current )===
  * Improved linear solve + derivatives (Quasi-inverse; Chebyshev Galerkin scheme) -- //Ben M. / Kyle A. / Nick F.//
  * Improve OpenMP Implementation
  * OpenMP/GPU hybrid legendre transforms (OpenACC/Cuda; OpenMP w/ offload?) -- //Kyle A / Nick F.//
  * Chebyshev Spectra
  * Coefficients at given theta/phi (or set of theta/phi)
  * Coefficients at given ell/m (or set of ell/m) -- //Cian W. / Valentin S.//
  * Custom Reference States / custom non-dimensionalization (Rayleigh) -- //Jon A./ Ryan O./ Krista S.//
  * Also translation via post-processing (rosetta)
  * Code cleanup -- **//EVERYONE//**
  * Increased modularization (parallel framework / buffer objects)
  * ISPack-enabled Legendre transforms


=== New Future Directions ===
  * Generalized 3-d/1-d/1-d read-in interface for:
  * Initial Conditions
  * Boundary conditions
  * More general boundary conditions
  * E.g., imposed B, heterogeneous thermal B.C.s, time-varying B.C.s, etc.
  * Python interface for interfacing with generalized interface
  * Diagnostic value specification with strings
  * Common walltime communication (here)
  * File numbering w/ backwards compatibility (here)
  * Output nrec bug (here)
  * Have make install also install python libraries + support code etc.
  * 3-D output class in Python 
  * Additional scalar field -- //Sebastian H. / Loren M. / Cian W./ Valentin S.//
  * Adding an Inner Core -- //Krisa S. / Connor B. / Hiro M. / Cian W. / Jon A.
  * Test field method (?)//
  * No cutout at r=0
  * Alternative radial basis functions
  * Z averaging / Z slicing
  * Possibly use code from Calypso supplied by Hiro
  * New Repository for post-processing scripts
  * Connecting Python to 3-D checkpoints (possibly here)
  * Adding lagrangian tracers
  * Additional time-stepping schemes
  * Reducing size of diagnostic code lists (groups; python/string automation)
  * Extensible/Modifiable equation sets
  * Cartesian mode
  * Alternative geometries
  * More generalized/modular outputs
  * More complete preamble information
  * Automatic testing for Rayleigh
  * Serial Rayleigh?
  * Angular-momentum conservation bug (what should be solved? / what is implemented)
  * Conserve core/mantle/inner-core angular momentum (slow down / speed up boundaries)



=== Additional Diagnostics ===
  * Dipole tilt as a function of time
  * Gauss coefficients  (possibly via Python interface)
  * Poloidal and Toroidal scalar functions
  * Filtered diagnostics (e.g., upflow/downflow masks or other variables)
  * Magnetic helicity
  * Helicity outputs
  * Tangent cylinder (inside vs. outside) - aware outputs
  * Distinguish between poloidal and toroidal contributions to outputs
  * Nusselt-number output

=== Post-Processing ===
  * Spherical-harmonic filtering
  * Pipelines for Vapor / Visit / Paraview etc. 
  * Reading 3-D outputs into Python
  * VTK output (related to pipelines above; Rayleigh option and Python post-processing)



=== Possible Directions? ===
  * Time-varying reference state / equation coefficients -- //Loren M.//

=== Documentation ===
  * Diagnostics (what is in memory / how do I get what is not in memory)
  * Can we provide guildlines on setting up an IDE?
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