EnzymeAD/Enzyme.jl

Julia bindings for the Enzyme automatic differentiator

Stars: 586
Forks: 108
Open beginner issues: 0
Indexed issues: 275
Avg merge: 1d 5h
Merged PRs (30d): 44

Dominant language: Julia
License: MIT
Last GitHub push: Sep 14, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted good first issue

Open All

275 open issues indexed

LaTeX not being rendered correctly for math line of documentation in Box example Open

EnzymeAD/Enzyme.jl#3237 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Enzyme could not find world for custom rules arriving via bitcode Open

EnzymeAD/Enzyme.jl#3269 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Type analysis failing for NTuple of views with runtime length within KA Kernels in Julia 1.12 (but not Julia 1.10) Open

EnzymeAD/Enzyme.jl#3275 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Constant `int` return type is defaulted to `DUP_ARG` for custom rules arriving via bitcode Open

EnzymeAD/Enzyme.jl#3300 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Seemingly inaccurate activity analysis for `Tuple{NTuple{N1, Int}, NTuple{N2, Int}}` Open

EnzymeAD/Enzyme.jl#3313 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`test_reverse` on `mul!` allocates A LOT Open

EnzymeAD/Enzyme.jl#3314 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`Illegal calling convention fixup` in Julia v1.11 when enabling code coverage Open

Julia v1.11

EnzymeAD/Enzyme.jl#3318 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Nested differentiation through a custom rule whose body calls a function returning a mixed pointer/isbits struct: CallingConventionMismatchError in classify_arguments (Julia <= 1.11) Open

EnzymeAD/Enzyme.jl#3322 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Julia 1.11: forward-over-reverse dynamic loop fails in `nodecayed_phis!` GC analysis Open

EnzymeAD/Enzyme.jl#3329 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
SciML-free: runtime activity error through FunctionWrappersWrapper with Lux ComponentArray Open

EnzymeAD/Enzyme.jl#3330 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Julia 1.13: Add support for `implement sret_union ABI for pointer-ful types` Open

julia v1.13

EnzymeAD/Enzyme.jl#3349 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Julia 1.12 regression: `EnzymeNoDerivativeError: cannot handle unknown binary operator: shl` in forward-over-reverse HVP Open

EnzymeAD/Enzyme.jl#3368 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Reverse-mode failures differentiating through `reshape` of a CuArray (RuntimeActivity / NoDerivative / retain-freed-data) Open

EnzymeAD/Enzyme.jl#3370 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
1.13+ illegal type analysis due to memory itself being unstable internally Open

EnzymeAD/Enzyme.jl#3373 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Decrease macos ci jobs Open

EnzymeAD/Enzyme.jl#3387 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Very large compilation burden (time & memory) for `test_reverse`/`autodiff_thunk` with complicated types Open

EnzymeAD/Enzyme.jl#3392 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Silent process death (heap corruption / invalid free in the generated adjoint) on key lookup of a Dict allocated inside the differentiated function (Julia 1.12.5, Enzyme 0.13.173, Windows) Open

EnzymeAD/Enzyme.jl#3400 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Another `LLVM error: function failed verification (4)` Open

EnzymeAD/Enzyme.jl#3404 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Gradient semantics for Duplicated arguments containing the same array in two slots Open

EnzymeAD/Enzyme.jl#3408 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Accumulating into local complex number fails in Julia 1.12 (`EnzymeNoDerivativeError`) Open

EnzymeAD/Enzyme.jl#3411 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`zero(BigFloat)` fails Open

EnzymeAD/Enzyme.jl#3414 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Flaky GC-frame corruption in batched (BatchDuplicated) custom-rule reverse codegen with abstract (Any) return type Open

EnzymeAD/Enzyme.jl#3425 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
StackOverflowError in Enzyme's LLVM pass (removeDeadArgs!/fixup_callconv!) only inside a Distributed.jl worker — reproduces on 0.13.176 and 0.13.197 Open

EnzymeAD/Enzyme.jl#3427 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`illegal calling convention fixup` strikes again Open

EnzymeAD/Enzyme.jl#3429 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
EnzymeNoTypeError on Julia 1.12: type analysis cannot type the 0xFF pointer-slot poison memset emitted for a by-value read of a large inline struct out of a heap object Open

EnzymeAD/Enzyme.jl#3433 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Burdensome compile times with `autodiff` and `test_reverse`, made worse by GPU Open

EnzymeAD/Enzyme.jl#3439 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`autodiff` `sin.(x)` where `x isa CuVector{<:Complex}` leads to PTX pain Open

EnzymeAD/Enzyme.jl#3440 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Segfault with `eps(BigFloat)` Open

EnzymeAD/Enzyme.jl#3441 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`LLVMException` on forward mode matmul operations + cuda Open

EnzymeAD/Enzyme.jl#3442 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
EnzymeNoDerivativeError with Ark MWE (2) Open

EnzymeAD/Enzyme.jl#3445 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
EnzymeNoDerivativeError: forward-over-reverse HVP fails when function writes into a Duplicated cache (Julia 1.12, x86_64) Open

EnzymeAD/Enzyme.jl#3448 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`EnzymeNoDerivativeError` in some cases of Forward-over-Reverse differentiation of matrix-matrix-product Open

EnzymeAD/Enzyme.jl#3450 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Reverse mode: `MixedDuplicated` cannot be constructed from `CUDA.KernelRefValue` Open

EnzymeAD/Enzyme.jl#3451 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Reverse mode: `cannot handle (augmented) unknown intrinsic llvm.nvvm.shfl.sync.down.f32` Open

EnzymeAD/Enzyme.jl#3452 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Reverse mode: `ijl_eqtable_put` via `task_local_storage` blocks CuArray reductions Open

EnzymeAD/Enzyme.jl#3453 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Forward mode: no derivative for `jl_idset_put_key`, via `make_zero!`'s seen-set Open

EnzymeAD/Enzyme.jl#3454 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Compile-time overhead of custom rules: dead recursive codegen of rule-bearing functions + duplicated nested codegen of rules Open

EnzymeAD/Enzyme.jl#3455 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Crash with Ark MWE Open

EnzymeAD/Enzyme.jl#3456 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`sret` related `AssertionError` with custom rule, AD on AD violence, and complex return type Open

EnzymeAD/Enzyme.jl#3457 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
very long compilation times on CUDA gpu Open

EnzymeAD/Enzyme.jl#3459 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Error in forward-mode Jacobian with `vcat` Open

EnzymeAD/Enzyme.jl#3460 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Batched reverse-mode autodiff_thunk fails on ComposedFunction Open

EnzymeAD/Enzyme.jl#3465 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Crash when differentiating through a DFTK model Open

EnzymeAD/Enzyme.jl#3476 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Enzyme behaving badly with shadows of immutables Open

EnzymeAD/Enzyme.jl#3477 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Move error structs to EnzymeCore to allow for dispatch? Open

EnzymeAD/Enzyme.jl#3478 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
GC segfault with `OverrideBCMaterialize` Open

EnzymeAD/Enzyme.jl#3489 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
GPUCompiler v2? Open

EnzymeAD/Enzyme.jl#3492 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Docs build broken by Documenter 1.18: PCRE limit on the Pluto notebook's @raw block Open

EnzymeAD/Enzyme.jl#3494 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Performance degradations with non-inlined `throw` Open

EnzymeAD/Enzyme.jl#3516 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Reverse of forward fails with `EnzymeNoTypeError` for tuples of views Open

EnzymeAD/Enzyme.jl#3523 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026

A short digest of beginner-friendly GitHub issues.