inducer/loopy

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A code generator for array-based code on CPUs and GPUs

Stars: 636
Forks: 81
Open beginner issues: 0
Indexed issues: 140
Avg merge: 1d 19h
Merged PRs (30d): 7

Dominant language: Python
License: MIT
Last GitHub push: Sep 11, 2026
Latest indexed: Sep 15, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

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140 open issues indexed

Piecewise defined substitution rules Open

inducer/loopy#383 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Calling an undefined/unresolved function? Type inference will be very confused Open

inducer/loopy#385 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Deprecate CompiledKernel Open

inducer/loopy#394 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Follow-up fixes from kernel callables Open

inducer/loopy#397 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Reenable access footprint gathering Open

inducer/loopy#399 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
conj() generates broken code for non-complex types Open

inducer/loopy#401 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`lp.privatize_temporaries_with_inames` fails for multiple inames sweeping the same temporary Open

inducer/loopy#418 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Loopy's codegenerator fails with non-deterministic error Open

inducer/loopy#421 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Add warning for temporaries that are written but never read Open

inducer/loopy#423 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Loopy's host-side shape inference cannot solve system of equations Open

inducer/loopy#424 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[loopy.match] Targeting reduction expression in an instruction Open

inducer/loopy#428 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Domains (on inames) could be convey information to callees in check_bounds Open

inducer/loopy#430 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Remove Array.offset Open

inducer/loopy#432 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
OpenCL targets aren't aware of some math built-ins Open

inducer/loopy#437 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
AssertionError when calling add_prefetch with SubArrayRefs Open

inducer/loopy#439 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[callables] Overwriting dtypes at a call-site should be illegal Open

inducer/loopy#442 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
`loopy.check.check_for_write_races` should use AccessWriteRaceChecker Open

inducer/loopy#449 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Use polyhedral info to inform `is_input`/`is_output` Open

inducer/loopy#450 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Global reduction Open

inducer/loopy#475 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Type inference failure Open

inducer/loopy#481 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`TemporaryVariable.temp_var_type` requires some janky mess of of `lp.Optional(lp.auto)` after behavior changes in loopy Open

inducer/loopy#485 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Heap storage for big temporaries Open

inducer/loopy#487 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[codegen, bug]: Callee kernel name generation is incorrect Open

inducer/loopy#495 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Negative loop increment? Open

inducer/loopy#501 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Execution targets don't support negative strides Open

inducer/loopy#504 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`check_reduction_iname_uniqueness` happens after `realize_reduction` Open

inducer/loopy#506 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Can't print a kernel if `CannotBranchDomainTree` Open

inducer/loopy#510 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Offset == `lp.auto` should determine whether to offset at runtime Open

inducer/loopy#521 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`lp.assignment_to_subst`: Should it support 1-long axes as a special case? Open

inducer/loopy#529 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
lp.buffer_array allocates more memory than necessary Open

inducer/loopy#537 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`lp.extract_subst` does not search for subexpressions of `Product` or `Sum` Open

inducer/loopy#538 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[Enhancement] Transformation to hoist terms in a reduction that are sound due to the distributive property Open

inducer/loopy#541 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`lp.duplicate_inames` should take in a soundness check flag Open

inducer/loopy#550 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026
KeyError in with_descrs Open

inducer/loopy#552 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Type inference: callables may not get type-specialized Open

inducer/loopy#562 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
lp.precompute does not emit the correct `precompute_inames` Open

inducer/loopy#567 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[Usability] Callables that are (unintentional) entrypoints cause type errors Open

inducer/loopy#587 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Look for uses of `pyrsistent.Map` where no updates occur, replace with `immutables.Map` Open

inducer/loopy#595 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Vectorization error with predicates depending on vectorized loop Open

inducer/loopy#615 · 13 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`check_for_data_dependent_parallel_bounds` doesn't know about multiple kernel launches Open

inducer/loopy#621 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`buffer_array` fails with an assertion error Open

inducer/loopy#626 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`realize_reduction` requires a typed kernel for comparative operations Open

inducer/loopy#633 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`get_one_linearized_kernel` bypasses pre-linearization checks Open

inducer/loopy#639 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Get rid of `applied_iname_rewrites` Open

inducer/loopy#641 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Warnings in operation counting Open

inducer/loopy#645 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Dropping arguments in inlining Open

inducer/loopy#648 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Unable to map ``"bool", "complex128"`` for ``CudaTarget`` Open

inducer/loopy#658 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Not able to infer ``atan2`` for ``CudaTarget`` Open

inducer/loopy#659 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Not able to infer ``HUGE_VAL`` for ``CudaTarget`` Open

inducer/loopy#660 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[Bug] Loopy's parsing of domains with 0-dims incompatible with ISL Open

inducer/loopy#661 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026

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