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Discussion: use global evolution in test_integration_features.py

priority: mediumMedium priorityMedium priority

status: requires discussionIssue requires further discussion before implementationIssue requires further discussion before implementation

type: performance: speedPerformance improvements that reduce walltimePerformance improvements that reduce walltime

type: testingTesting improvementsTesting improvements

Status: Open.

#592 In 21cmfast/21cmFAST;

· jordanflitter opened on Jan 29, 2026

Move interpolation initializers to python

context: C backendChanges occur predominantly in the C codeChanges occur predominantly in the C code

context: python wrapperChanges predominantly concerning the python wrapperChanges predominantly concerning the python wrapper

priority: highHigh priorityHigh priority

type: performance: speedPerformance improvements that reduce walltimePerformance improvements that reduce walltime

Status: Open.

#591 In 21cmfast/21cmFAST;

· jordanflitter opened on Jan 29, 2026

Possible runtime reduction in the evaluation of tau_X

context: C backendChanges occur predominantly in the C codeChanges occur predominantly in the C code

priority: mediumMedium priorityMedium priority

status: requires researchIssue requires further research before implementationIssue requires further research before implementation

type: performance: speedPerformance improvements that reduce walltimePerformance improvements that reduce walltime

Status: Open.

#590 In 21cmfast/21cmFAST;

· jordanflitter opened on Jan 29, 2026

Documentation Request: Performance/Scaling

priority: mediumMedium priorityMedium priority

type: maint: documentationImprovements or additions to documentationImprovements or additions to documentation

Status: Open.

#587 In 21cmfast/21cmFAST;

· steven-murray opened on Jan 13, 2026

[BUG] Documentation: Some functions missing from API docs

priority: mediumMedium priorityMedium priority

type: maint: documentationImprovements or additions to documentationImprovements or additions to documentation

Status: Open.

Bug

#586 In 21cmfast/21cmFAST;

· steven-murray opened on Jan 13, 2026

[BUG] Periodic boundary conditions bug: Fields with RSDs have kinks in the edges when using <code>periodic=True</code>

priority: highHigh priorityHigh priority

type: bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#581 In 21cmfast/21cmFAST;

· nikos-triantafyllou opened on Dec 8, 2025

[BUG] None in HaloBox fields of a coeval box when generated with generate_lightcone

context: cache/ioChanges predominantly affect caching or I/OChanges predominantly affect caching or I/O

priority: highHigh priorityHigh priority

type: bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#565 In 21cmfast/21cmFAST;

· jordanflitter opened on Sep 4, 2025

[Feature Req.] Ability to store node_redshifts in the TOML spec

priority: mediumMedium priorityMedium priority

type: feature: uiNew feature that adds functionality for the userNew feature that adds functionality for the user

Status: Open.

Feature

#559 In 21cmfast/21cmFAST;

· steven-murray opened on Aug 5, 2025

Can we get rid of the 4D arrays in XraySourceBox?

type: performance: memoryPerformance improvements that reduce memory usagePerformance improvements that reduce memory usage

Status: Open.

#552 In 21cmfast/21cmFAST;

· jordanflitter opened on Aug 2, 2025

[Feature Req.] Dedicated "compatibility" module

context: python wrapperChanges predominantly concerning the python wrapperChanges predominantly concerning the python wrapper

priority: mediumMedium priorityMedium priority

type: feature: uiNew feature that adds functionality for the userNew feature that adds functionality for the user

Status: Open.

#543 In 21cmfast/21cmFAST;

· steven-murray opened on Jul 25, 2025

[Feature Req.] Redshift dependency in parameters of MASS_DEPENDENT_ZETA

Status: Open.

#537 In 21cmfast/21cmFAST;

· zhaotingchen opened on Jul 20, 2025

[Question] ION_Tvir_MIN seems to be a dummy parameter

Status: Open.

#536 In 21cmfast/21cmFAST;

· zhaotingchen opened on Jul 20, 2025