ashvardanian/NumKong

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SIMD-accelerated distances, dot products, matrix ops, geospatial & geometric kernels for 16 numeric types — from 6-bit floats to 64-bit complex — across x86, Arm, RISC-V, and WASM, with bindings for Python, Rust, C, C++, Swift, JS, and Go 📐

Stars: 1.9k
Forks: 133
Open beginner issues: 0
Indexed issues: 39
Avg merge: 18h 28m
Merged PRs (30d): 3

Dominant language: C
License: Apache-2.0
Last GitHub push: Sep 1, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue help wanted

Beginner friendly Everything

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39 open issues indexed

Bug: Serial Euclidean distance returns zero after floating-point overflow Open

bug

ashvardanian/NumKong#384 · 5 comments · 1 assignee · Opened Sep 10, 2026
Feature: Add a truncation mode to nk.astype for float-to-integer casts Open

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

ashvardanian/NumKong#377 · Opened Aug 13, 2026
Bug: macOS arm64 wheel loads a second libomp runtime and crashes with PyTorch Open

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

ashvardanian/NumKong#373 · 1 comment · 1 reaction · Opened Aug 4, 2026
Feature request: CPU separable 3D linear resampling for DHWC volumes Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

ashvardanian/NumKong#372 · Opened Aug 3, 2026
Bug: Tests fail to run: pytest.PytestUnknownMarkWarning: Unknown pytest.mark.repeat - is this a typo? Open

bug

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

ashvardanian/NumKong#371 · Opened Aug 2, 2026
Feature: N-D lerp with broadcast weights for alpha blending Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

ashvardanian/NumKong#369 · Opened Jul 24, 2026
Feature: N-D minimum, maximum, median, and mode neighborhood filters Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

ashvardanian/NumKong#367 · Opened Jul 24, 2026
Feature: N-D elementary math ufuncs, including atan2 and hypot Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

ashvardanian/NumKong#365 · Opened Jul 24, 2026
Feature: N-D comparisons, minimum, maximum, clip, and where Open

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

ashvardanian/NumKong#366 · Opened Jul 24, 2026
Feature: N-D `convolve1d` and separable filters for box and Gaussian blur Open

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

ashvardanian/NumKong#364 · Opened Jul 24, 2026
Feature: Batched 2-D and 3-D resampling for resize, warp, and remap Open

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

ashvardanian/NumKong#362 · Opened Jul 24, 2026
Feature: SIMD histogram and `bincount` for uint8 data and integer labels Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

ashvardanian/NumKong#363 · 1 comment · Opened Jul 24, 2026
Bug: v7.7.1 sdist build misdetects AVX512-FP16 compiler support Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

ashvardanian/NumKong#360 · 1 reaction · Opened Jul 23, 2026
Bug: Windows DLL import error with `numkong >= 7.5.0` Open

bug

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

ashvardanian/NumKong#358 · 1 reaction · Opened Jul 14, 2026
Bug: simsimd: Fails to build Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 65/100

ashvardanian/NumKong#356 · Opened May 30, 2026
SwiftPM: header-only CNumKong target breaks transitive linking in Xcode 16+ Open

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

ashvardanian/NumKong#353 · 1 comment · Opened May 7, 2026
Feature: Allow building `nk_shared` as a static archive (for runtime dispatch under static linkage) Open

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

ashvardanian/NumKong#351 · 1 comment · 3 reactions · Opened Apr 28, 2026
Feature: Per-function target pragmas for LoongArch LASX kernels (blocked on GCC 15 / Clang 22 availability) Open

enhancement

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

ashvardanian/NumKong#348 · Opened Apr 15, 2026
Feature: ARM32 NEON Kernel Portability Open

enhancement

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

ashvardanian/NumKong#339 · Opened Apr 5, 2026
Feature: Poison misaligned tails in PyTest Open

enhancement

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

ashvardanian/NumKong#334 · Opened Apr 2, 2026
Feature: Shape-preserving N-D `nk.scale` with documented integer rounding Open

enhancement

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

ashvardanian/NumKong#327 · Opened Mar 23, 2026
Feature: Require "pre-packing" for `symmetric` GEMM-like kernels Open

enhancement v8

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

ashvardanian/NumKong#323 · Opened Mar 22, 2026
Feature: Split MinMax and ArgMinMax reductions Open

enhancement v8

Difficulty 5/5 Over a week Newbie friendliness 45/100

ashvardanian/NumKong#322 · Opened Mar 22, 2026
Feature: Mixed-dtype broadcasted affine transform for normalization Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 45/100

ashvardanian/NumKong#315 · 2 comments · Opened Mar 18, 2026
Tracking: N-D numerical, image, and volume kernels requested by AlbumentationsX Open

enhancement

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

ashvardanian/NumKong#313 · 1 comment · 6 reactions · Opened Mar 18, 2026
Feature: Direct `matmul` for ephemeral and small right-hand matrices Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 38/100

ashvardanian/NumKong#312 · 1 comment · Opened Mar 18, 2026
Feature: Axis-aware `moments` and `minmax` reductions for N-D tensors Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 42/100

ashvardanian/NumKong#311 · 5 comments · Opened Mar 18, 2026
Feature: Hardening E4M3, E5M2, F16, & BF16 dot-products Open

enhancement

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

ashvardanian/NumKong#308 · 2 comments · 1 reaction · Opened Mar 8, 2026
Feature: SIMD-accelerated random generators Open

enhancement

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

ashvardanian/NumKong#299 · 3 comments · 1 reaction · Opened Feb 18, 2026
Feature: MXFP4 support, NVFP4, and block-scaling Open

enhancement

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

ashvardanian/NumKong#298 · Opened Feb 17, 2026
Feature: N-D `take`/gather for channel permutations and `cv2.mixChannels` Open

enhancement

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

ashvardanian/NumKong#247 · Opened Jan 24, 2025
Documenting Sparse & Curved Kernels for C 99 Open

documentation enhancement good first issue help wanted

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

ashvardanian/NumKong#228 · 1 reaction · Opened Nov 5, 2024
Feature: Bentley–Ottmann algorithm for trajectory matching Open

enhancement low priority

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

ashvardanian/NumKong#186 · Opened Sep 16, 2024
Feature: Sparse Matrix Multiplications Open

enhancement

ashvardanian/NumKong#170 · 9 comments · 1 reaction · 1 assignee · Opened Sep 9, 2024
Set Intersections for signed and UUID types Open

enhancement question

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

ashvardanian/NumKong#162 · Opened Sep 6, 2024
Functions to compute L1 distance Open

low priority

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

ashvardanian/NumKong#133 · 6 comments · Opened Jun 10, 2024
Sparse Distances Open

ashvardanian/NumKong#100 · 5 comments · 2 reactions · 1 assignee · Opened Mar 20, 2024
Add covariance estimators Open

good first issue

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

ashvardanian/NumKong#90 · 2 comments · 1 reaction · Opened Feb 24, 2024
GoLang bindings Open

enhancement good first issue help wanted

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

ashvardanian/NumKong#28 · 4 comments · Opened Oct 17, 2023

ashvardanian/NumKong

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