Issues

• IDAS: an order decrease decided on the states' errors is never revisited with the quadratures' errors (order held at 1 or 2 when the states are linear in time, never above 4 when they are quadratic)

  llnl/sundials#1058 · Filter by author Eyad-3D opened on Oct 22, 2026

• Proposal: add a Robertson stiff kinetics example using sundials4py

  question
  llnl/sundials#1057 · Filter by author MounikaM55 opened on Oct 21, 2026
  1

• [BUG] KIN_FP with Anderson acceleration reports success at a non-solution

  llnl/sundials#1040 · Filter by author Robertboy18 opened on Oct 7, 2026

• Major Changes in SUNDIALS v8.0.0

  llnl/sundials#1038 · Filter by author gardner48 opened on Oct 6, 2026 · SUNDIALS v8.0.0

• [BUG] KLU 64bit integer not recognized

  bugcmake
  llnl/sundials#1016 · Filter by author sagitter opened on Sep 14, 2026
  1

  

• Sundials libraries 32int and 64int

  feature-request
  llnl/sundials#1015 · Filter by author sagitter opened on Sep 11, 2026
  2

  

• [BUG] Build on Windows 11 fails with the error "add_subdirectory given source "bindings/sundials4py" which is not an existing directory."

  bugtriage
  llnl/sundials#988 · Filter by author ReallyCoolName opened on Aug 11, 2026
  3

• [BUG] arkInitialSetup fails with embedding order < 1 for methods with no embedding

  bug
  llnl/sundials#957 · Filter by author eltix opened on Jun 11, 2026
  4

• Unsmooth continuous functions, solver reinit, performance, ...

  question
  llnl/sundials#947 · Filter by author guibou opened on May 30, 2026

• Outdated documentation for CV_TOO_CLOSE

  bugtriage
  llnl/sundials#923 · Filter by author eltix opened on Apr 27, 2026

• Usless assigments to argument

  enhancement
  llnl/sundials#899 · Filter by author vil02 opened on Apr 3, 2026
  3

• SUN_COMM_NULL vs MPI_COMM_NULL in FSUNContext_Create(.,.)

  triage
  llnl/sundials#898 · Filter by author dirteat opened on Apr 3, 2026
  4

• Root function where g(x) = g(x + d) = 0

  triage
  llnl/sundials#881 · Filter by author guibou opened on Mar 20, 2026
  3

• [BUG] IDASolve and IDA_TOO_CLOSE

  bugtriage
  llnl/sundials#840 · Filter by author guibou opened on Feb 2, 2026
  1

  

• Solver recommendation for large advection-diffusion (500k cells)

  question
  llnl/sundials#810 · Filter by author FojoKojo opened on Jan 13, 2026
  4

• How thorough is the scaling in KINSOL?

  question
  llnl/sundials#743 · Filter by author casella opened on Jul 17, 2025
  

• Some examples use deprecated workspace functions.

  bug
  llnl/sundials#725 · Filter by author WarrenWeckesser opened on Jun 23, 2025 · SUNDIALS v8.0.0
  1

  

• Examples for CVodeResizeHistory when y changes size

  question
  llnl/sundials#715 · Filter by author yizhenwang2002 opened on Jun 13, 2025
  4

  

• [BUG] Possible misaligned memory access in GPU fused vector workspace

  bugtriage
  llnl/sundials#619 · Filter by author balos1 opened on Dec 10, 2024

• Error building examples on Linux

  docsenhancement
  llnl/sundials#603 · Filter by author willidu opened on Dec 2, 2024
  4

• Validation for Unset Linear Solver

  enhancement
  llnl/sundials#598 · Filter by author Steven-Roberts opened on Oct 31, 2024

• [BUG] cv_examples.pdf and probably other PDFs have broken references ("??" instead of number)

  bugdocs
  llnl/sundials#592 · Filter by author ChrisHal opened on Oct 12, 2024
  2

  

• SUNMatScaleAdd Inefficient for Sparse Matrices

  enhancementpkg-core
  llnl/sundials#590 · Filter by author Steven-Roberts opened on Oct 8, 2024
  

• Undocumented return values for CVodeB and IDASolveB

  docstriage
  llnl/sundials#580 · Filter by author dweindl opened on Sep 28, 2024

• [BUG] ARKodeSetDefaults assumes ReInit

  bugtriage
  llnl/sundials#569 · Filter by author gardner48 opened on Sep 11, 2024