NVIDIA/cuCollections

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Stars: 667
Forks: 120
Open beginner issues: 0
Indexed issues: 55
Avg merge: 7d 5h
Merged PRs (30d): 4

Dominant language: Cuda
License: Apache-2.0
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Beginner friendly Everything

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55 issues indexed so far

[BUG] Headers include deprecated <cuda/stream_ref>, breaking -Werror builds with CCCL 3.5 Open

type: bug

NVIDIA/cuCollections#848 · 1 assignee · Opened Sep 18, 2026
Add cuco::detail::stream_sync(cuda::stream_ref) to centralize CCCL version-specific API naming Open

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

NVIDIA/cuCollections#840 · 1 comment · Opened Sep 5, 2026
[ENHANCEMENT]: Remove fast_int storage from dynamic valid extents Open

type: improvement

Difficulty 3/5 1-2 days Newbie friendliness 64/100

NVIDIA/cuCollections#838 · 1 comment · 1 reaction · Opened Aug 20, 2026
Add byte-oriented sizing and validation utilities for `bloom_filter` Open

helps: rapids topic: bloom_filter type: feature request

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

NVIDIA/cuCollections#829 · 2 comments · Opened Jul 13, 2026
[ENHANCEMENT]: Robin Hood Hashing performance improvement - would a PR be welcome? Open

topic: performance type: feature request

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

NVIDIA/cuCollections#817 · 7 comments · 1 reaction · Opened May 29, 2026
Relax key/payload/slot type constraints to enable 1B and 2B types Open

good first issue P2: Nice to have type: improvement

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

NVIDIA/cuCollections#805 · 4 comments · Opened Apr 27, 2026
[ENHANCEMENT]: Add count_if and retrieve_if APIs to static_multiset Open

helps: rapids type: feature request

Difficulty 4/5 3-5 days Newbie friendliness 62/100

NVIDIA/cuCollections#800 · 1 comment · Opened Mar 31, 2026
[FEA] Add MPSC/MPMC concurrent queue Open

type: feature request

NVIDIA/cuCollections#791 · 1 assignee · Opened Jan 22, 2026
[ENHANCEMENT]: Enable PDL for all cuco kernels Open

good first issue helps: rapids P1: Should have topic: performance type: improvement

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

NVIDIA/cuCollections#785 · 5 comments · Opened Dec 19, 2025
[ENHANCEMENT]: Make cuco code NVRTC-compatible Open

helps: rapids type: feature request

NVIDIA/cuCollections#695 · 6 comments · 2 reactions · 1 assignee · Opened Apr 4, 2025
Unexpected degradation of FPR when `pattern_bits=4` Open

topic: bloom_filter type: bug

NVIDIA/cuCollections#682 · 5 comments · 1 assignee · Opened Feb 26, 2025
[ENHANCEMENT]: Implement cooperative device bulk operations Open

type: improvement

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

NVIDIA/cuCollections#674 · 1 comment · 1 reaction · Opened Feb 14, 2025
[ENHANCEMENT]: Consider removing the use of `argument_type` and `result_type` from `hasher` in cuco `default_filter_policy` Open

P1: Should have topic: bloom_filter type: improvement

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

NVIDIA/cuCollections#653 · 5 comments · Opened Dec 10, 2024
[ENHANCEMENT]: `__device__ for_each` that provides a mutable reference rather than a copy of the slot to the callback function Open

type: feature request

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

NVIDIA/cuCollections#639 · Opened Nov 15, 2024
[ENHANCEMENT]: Get rid of custom test utilities Open

good first issue P3: Backlog type: improvement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

NVIDIA/cuCollections#622 · 1 comment · Opened Oct 18, 2024
[BUG]: repeated keys in static_map after a sequence of insertions and deletions Open

P1: Should have topic: static_map topic: static_set type: bug

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

NVIDIA/cuCollections#606 · 4 comments · 2 reactions · Opened Oct 2, 2024
[ENHANCEMENT]: Enable 128bit hasher in cuco::bloom_filter Open

P1: Should have topic: bloom_filter type: improvement

NVIDIA/cuCollections#601 · 1 assignee · Opened Sep 5, 2024
[ENHANCEMENT]: Add version and release tags Open

P1: Should have type: improvement

Difficulty 3/5 1-2 days Newbie friendliness 28/100

NVIDIA/cuCollections#586 · 1 comment · 1 reaction · Opened Aug 23, 2024
[ENHANCEMENT]: Device assertions in debug mode Open

good first issue P2: Nice to have type: improvement

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

NVIDIA/cuCollections#563 · Opened Jul 29, 2024
[ENHANCEMENT]: Update build-time check since the trunk CCCL allows 1B/2B `atomic_ref` Open

P1: Should have type: improvement

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

NVIDIA/cuCollections#554 · 2 comments · Opened Jul 21, 2024
[ENHANCEMENT]: Enable `packed_cas` codepath using 16B CAS on sm_90+ architectures Open

topic: performance type: improvement

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

NVIDIA/cuCollections#547 · 2 comments · 2 reactions · Opened Jul 16, 2024
[BUG]: Compute sanitizer memcheck failed with `UTILITY_TEST` Open

P0: Must have type: bug

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

NVIDIA/cuCollections#539 · Opened Jul 12, 2024
Support any hash constructor in hash_test.cu::check_hash_result Open

good first issue type: improvement

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

NVIDIA/cuCollections#520 · 1 comment · Opened Jun 25, 2024
[FEATURE]: Add `perfect_hashing` probing scheme Open

good first issue P2: Nice to have type: feature request

NVIDIA/cuCollections#487 · 2 comments · 1 reaction · 1 assignee · Opened May 16, 2024
[ENHANCEMENT]: Add hasher/comparator adaptor to better support mapping table use case Open

good first issue P2: Nice to have type: improvement

Difficulty 3/5 1-2 days Newbie friendliness 50/100

NVIDIA/cuCollections#476 · 3 comments · Opened May 7, 2024
Enable opt-out for bitwise comparable payload requirement Open

P2: Nice to have type: feature request

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

NVIDIA/cuCollections#427 · Opened Jan 22, 2024
[ENHANCEMENT]: Add a callback to the bulk_insert functions Open

type: feature request

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

NVIDIA/cuCollections#376 · 5 comments · Opened Sep 28, 2023
[ENHANCEMENT]: Provide helper function cuco::experimental::make_static_set et al Open

P2: Nice to have type: improvement

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

NVIDIA/cuCollections#370 · 6 comments · Opened Sep 21, 2023
[ENHANCEMENT]: Add option to separate container initialization from memory allocation Open

type: feature request

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

NVIDIA/cuCollections#339 · 6 comments · Opened Jul 28, 2023
Switch to cuda::std::span once available Open

P3: Backlog type: feature request

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

NVIDIA/cuCollections#332 · 3 comments · Opened Jul 10, 2023
[ENHANCEMENT]: Switch to cuda::memory_resource once it is available Open

P3: Backlog type: feature request

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

NVIDIA/cuCollections#289 · 1 comment · Opened Apr 4, 2023
[ENHANCEMENT]: Make probing logic usable from the host to enable reverse offloading on G+H Open

type: feature request

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

NVIDIA/cuCollections#285 · Opened Mar 30, 2023
[ENHANCEMENT]: Add compute-sanitizer tests Open

P3: Backlog topic: CI type: feature request

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

NVIDIA/cuCollections#258 · 1 reaction · Opened Dec 12, 2022
[ENHANCEMENT]: Perf guide Open

type: docs type: feature request

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

NVIDIA/cuCollections#250 · 2 comments · Opened Dec 5, 2022
Size computation slows bulk insert significantly Open

P1: Should have type: feature request

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

NVIDIA/cuCollections#237 · 1 comment · Opened Oct 3, 2022
[ENHANCEMENT]: Including cuco datastructures declarations for non-CUDA compilers. Open

P1: Should have type: feature request

NVIDIA/cuCollections#232 · 10 comments · 1 reaction · 1 assignee · Opened Sep 8, 2022
Build doxygen docs and push to GH pages via CI Open

P1: Should have type: docs

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

NVIDIA/cuCollections#215 · 2 reactions · Opened Aug 17, 2022
[FEA] Add tests that verify vector loads are generated when expected Open

P2: Nice to have topic: performance type: feature request

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

NVIDIA/cuCollections#213 · Opened Aug 14, 2022
[FEA] Add benchmarks for device-side APIs Open

good first issue P2: Nice to have topic: performance type: feature request

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

NVIDIA/cuCollections#211 · 2 reactions · Opened Aug 12, 2022
[FEA] Variadic ctor parameters Open

type: feature request

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

NVIDIA/cuCollections#207 · 2 comments · Opened Aug 9, 2022
[FEA] New storage class concept Open

type: feature request

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

NVIDIA/cuCollections#206 · 1 comment · Opened Aug 9, 2022
[FEA] New probing scheme concept Open

type: feature request

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

NVIDIA/cuCollections#205 · 4 comments · 1 reaction · Opened Aug 9, 2022
Use NV_IF_TARGET instead of CUDA_ARCH Open

P1: Should have type: feature request

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

NVIDIA/cuCollections#193 · 1 comment · Opened Jul 22, 2022
[FEA] Semantic versioning Open

P3: Backlog type: feature request

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

NVIDIA/cuCollections#190 · 4 comments · Opened Jul 20, 2022
[FEA] Support linking multiple versions of cuco in the same project Open

P1: Should have type: feature request

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

NVIDIA/cuCollections#189 · 1 comment · Opened Jul 19, 2022
[DOC] Automate publishing documentation with github workflow Open

P1: Should have type: docs type: feature request

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

NVIDIA/cuCollections#178 · 1 reaction · Opened Jun 20, 2022
[FEA] Add tests to verify headers are standalone Open

good first issue P1: Should have topic: build type: feature request

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

NVIDIA/cuCollections#159 · Opened May 19, 2022
[FEA] Add kernel launch wrapper Open

good first issue P2: Nice to have type: feature request

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

NVIDIA/cuCollections#152 · 2 comments · Opened May 4, 2022
[FEA] Block level bulk APIs Open

helps: rapids P3: Backlog type: feature request

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

NVIDIA/cuCollections#148 · 1 comment · Opened Apr 5, 2022
[FEA] Support concurrent insert/find for static_map when size of K-V pair is greater than 8 bytes Open

helps: rapids type: feature request

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

NVIDIA/cuCollections#137 · Opened Jan 26, 2022

NVIDIA/cuCollections

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