SciML/JumpProcesses.jl

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Build and simulate jump equations like Gillespie simulations and jump diffusions with constant and state-dependent rates and mix with differential equations and scientific machine learning (SciML)

Stars: 150
Forks: 41
Open beginner issues: 0
Indexed issues: 77
Avg merge: 1d 9h
Merged PRs (30d): 28

Dominant language: Julia
License: No license data
Last GitHub push: Sep 17, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted

Beginner friendly Everything

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77 open issues indexed

Incorrect user-supplied dep_graph silently produces wrong results; proposal and prototype for a structural check Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

SciML/JumpProcesses.jl#648 · 2 comments · Opened Sep 1, 2026
Jump generation fails when `typeof(t) != typeof(1/t)` Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

SciML/JumpProcesses.jl#622 · Opened Aug 10, 2026
ExtendedJumpArray mul! is ambiguous with triangular matrices on Julia 1.10 Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

SciML/JumpProcesses.jl#621 · Opened Aug 6, 2026
JumpProblem(...; save_positions=...)` does not propagate to `VR_Direct`'s `ContinuousCallback Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 58/100

SciML/JumpProcesses.jl#595 · 3 comments · Opened May 28, 2026
GPU kernel InvalidIRError: pois_rand(PassthroughRNG, λ) hits jl_f_throw_methoderror on Julia 1.12 / latest CUDACore Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

SciML/JumpProcesses.jl#588 · Opened May 10, 2026
Towards a JumpProblem with minimal mutating state Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/JumpProcesses.jl#554 · Opened Feb 21, 2026
Downgrade tests disabled pending OrdinaryDiffEq updates Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/JumpProcesses.jl#541 · Opened Jan 13, 2026
Block Search SSA (BiSSA) Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/JumpProcesses.jl#533 · Opened Nov 30, 2025
Exact tau leaping method Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/JumpProcesses.jl#532 · 5 comments · Opened Nov 28, 2025
Allow JumpProblems to be remade with new callback Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/JumpProcesses.jl#528 · 2 comments · Opened Nov 2, 2025
subconstant time per reaction sampling SSA Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

SciML/JumpProcesses.jl#517 · Opened Aug 11, 2025
networks to add as correctness tests Open

first issue help wanted

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/JumpProcesses.jl#485 · 6 comments · Opened May 28, 2025
allow reset_aggregated_jumps! to update without reinitializating Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

SciML/JumpProcesses.jl#484 · Opened May 22, 2025
Optimizations for VRDirectCB Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

SciML/JumpProcesses.jl#483 · 3 comments · Opened May 20, 2025
Remove DiffEqCallbacks dependency Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

SciML/JumpProcesses.jl#482 · Opened May 20, 2025
Ensure non-default rngs are properly seeded with threading and repeated solve calls Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

SciML/JumpProcesses.jl#476 · Opened Feb 11, 2025
Changes required for initialization Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/JumpProcesses.jl#470 · 6 comments · Opened Jan 21, 2025
add save_idxs for SSAStepper Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

SciML/JumpProcesses.jl#468 · Opened Nov 22, 2024
Explain in docs how to reproducibly simulate for testing Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

SciML/JumpProcesses.jl#466 · Opened Nov 12, 2024
Potential changes for a breaking release Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

SciML/JumpProcesses.jl#465 · 2 comments · Opened Nov 12, 2024
Add test for spatial RSSACR when there is no next jump Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

SciML/JumpProcesses.jl#460 · Opened Oct 30, 2024
reenable format checking once working again Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

SciML/JumpProcesses.jl#458 · 1 comment · Opened Oct 18, 2024
reduce initialization memory for DirectCR() and CCNRM() Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/JumpProcesses.jl#456 · Opened Oct 16, 2024
Documentation: wording of the definition of a jump process Open

Difficulty 3/5 Half a day Newbie friendliness 45/100

SciML/JumpProcesses.jl#445 · 1 comment · Opened Aug 23, 2024
Add auto-alg and auto-stepper to the docs Open

help wanted

Difficulty 3/5 1-2 days Newbie friendliness 38/100

SciML/JumpProcesses.jl#444 · Opened Aug 16, 2024
reenable coverage badges when working again Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

SciML/JumpProcesses.jl#441 · 1 comment · Opened Aug 12, 2024
add tests for systems mixing bounded and non-bounded VariableRateJumps Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

SciML/JumpProcesses.jl#435 · Opened Aug 6, 2024
investigate where auto-alg should switch methods Open

first issue help wanted

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/JumpProcesses.jl#434 · 3 comments · Opened Aug 6, 2024
Help wanted Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

SciML/JumpProcesses.jl#431 · 2 comments · Opened Jul 28, 2024
Simulation-level parallelism Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/JumpProcesses.jl#429 · 2 comments · 1 reaction · Opened Jul 18, 2024
add option to convert MassActionJumps to ConstantRateJumps Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/JumpProcesses.jl#427 · 3 comments · Opened Jun 14, 2024
Seeding ensemble problems Open

question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/JumpProcesses.jl#421 · 8 comments · Opened May 14, 2024
(Hierarchical) Exact Accelerated SSA Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/JumpProcesses.jl#420 · 1 comment · Opened Apr 29, 2024
Better documentation of `remake` mutating original problems Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

SciML/JumpProcesses.jl#416 · 1 reaction · Opened Apr 10, 2024
network free solvers Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/JumpProcesses.jl#415 · 1 reaction · Opened Apr 8, 2024
Uniformization Direct Methods Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

SciML/JumpProcesses.jl#413 · Opened Apr 6, 2024
Add / use cache-optimized indexed priority queue in NRM-based methods. Open

GSOC

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/JumpProcesses.jl#405 · 1 comment · Opened Mar 4, 2024
mutating parameter vector needs to call reset_aggregated_jumps! Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/JumpProcesses.jl#386 · 7 comments · Opened Dec 30, 2023
Dynamical ODE and SDE solvers fail when they are combined with VariableRateJump. Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/JumpProcesses.jl#374 · 5 comments · Opened Nov 29, 2023
Including global variables that participate in MassActionJumps in spatial systems Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/JumpProcesses.jl#364 · 10 comments · Opened Nov 1, 2023
Simulating jump problems require non-integer tspan values Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

SciML/JumpProcesses.jl#359 · 3 comments · Opened Oct 1, 2023
Improve docstrings Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/JumpProcesses.jl#353 · Opened Sep 23, 2023
Check if wrapping affects to always return nothing has perf impact Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/JumpProcesses.jl#333 · Opened Jul 18, 2023
`save_positions` not working with callbacks Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

SciML/JumpProcesses.jl#327 · Opened Jul 10, 2023
Set max number of jumps Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

SciML/JumpProcesses.jl#323 · 3 comments · Opened Jul 7, 2023
[Non-actionable] Performance gain of reusing randomness Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

SciML/JumpProcesses.jl#316 · 1 reaction · Opened Apr 17, 2023
rate function interface Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/JumpProcesses.jl#314 · 4 comments · Opened Apr 12, 2023
SSAStepper includes one extra value when calling terminate! Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/JumpProcesses.jl#312 · Opened Apr 8, 2023
SSAs for stiff systems Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

SciML/JumpProcesses.jl#311 · 3 comments · Opened Apr 5, 2023
Solvers for non-exponential waiting times Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/JumpProcesses.jl#295 · Opened Feb 19, 2023

SciML/JumpProcesses.jl

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