nsimd VS SimSIMD

Compare nsimd vs SimSIMD and see what are their differences.

SimSIMD

Up to 200x Faster Inner Products and Vector Similarity โ€” for Python, JavaScript, Rust, and C, supporting f64, f32, f16 real & complex, i8, and binary vectors using SIMD for both x86 AVX2 & AVX-512 and Arm NEON & SVE ๐Ÿ“ (by ashvardanian)
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nsimd SimSIMD
2 15
315 715
1.6% -
0.0 9.6
over 2 years ago 19 days ago
C C
MIT License Apache License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

nsimd

Posts with mentions or reviews of nsimd. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-03-22.
  • SPO600 project part 1
    8 projects | dev.to | 22 Mar 2022
    I've decided to switch to something better, and after a few hours of searching, I found this repository: NSIMD https://github.com/agenium-scale/nsimd FastDifferentialCoding https://github.com/lemire/FastDifferentialCoding VS https://github.com/VcDevel/Vc XSIMD https://github.com/xtensor-stack/xsimd
  • All C++20 core language features with examples
    10 projects | news.ycombinator.com | 7 Apr 2021
    > - Waiting for Cross-Platform standardized SIMD vector datatypes

    which language has standardized SIMD vector datatypes ? most languages don't even have any ability to express SIMD while in C++ I can just use Vc (https://github.com/VcDevel/Vc), nsimd (https://github.com/agenium-scale/nsimd) or one of the other ton of alternatives, and have stuff that JustWorksTM on more architectures than most languages even support

    - Using nonstandard extensions, libraries or home-baked solutions to run computations in parallel on many cores or on different processors than the CPU

    what are the other native languages with a standardized memory model for atomics ? and, what's the problem with using libraries ? it's not like you're going to use C# or Java's built-in threadpools if you are doing any serious work, no ? Do they even have something as easy to use as https://github.com/taskflow/taskflow ?

    - Debugging cross-platform code using couts, cerrs and printfs

    because people never use console.log in JS or System.println in C# maybe ?

    - Forced to use boost for even quite elementary operations on std::strings.

    can you point to non-trivial java projects that do not use Apache Commons ? Also, the boost string algorithms are header-only so you will end up with exactly the same binaries that if it was in some std::string_algorithms namespace:

    https://gcc.godbolt.org/z/43vKadbde

SimSIMD

Posts with mentions or reviews of SimSIMD. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-03-28.
  • Deep Learning in JavaScript
    11 projects | news.ycombinator.com | 28 Mar 2024
  • From slow to SIMD: A Go optimization story
    10 projects | news.ycombinator.com | 23 Jan 2024
    For other languages (including nodejs/bun/rust/python etc) you can have a look at SimSIMD which I have contributed to this year (made recompiled binaries for nodejs/bun part of the build process for x86_64 and arm64 on Mac and Linux, x86 and x86_64 on windows).

    [0] https://github.com/ashvardanian/SimSIMD

  • Python, C, Assembly โ€“ Faster Cosine Similarity
    5 projects | news.ycombinator.com | 18 Dec 2023
    Kahan floats are also commonly used in such cases, but I believe there is room for improvement without hitting those extremes. First of all, we should tune the epsilon here: https://github.com/ashvardanian/SimSIMD/blob/f8ff727dcddcd14...

    As for the 64-bit version, its harder, as the higher-precision `rsqrt` approximations are only available with "AVX512ER". I'm not sure which CPUs support that, but its not available on Sapphire Rapids.

  • Beating GCC 12 - 118x Speedup for Jensen Shannon Divergence via AVX-512FP16
    1 project | /r/programming | 26 Oct 2023
  • Show HN: Beating GCC 12 โ€“ 118x Speedup for Jensen Shannon D. Via AVX-512FP16
    1 project | news.ycombinator.com | 24 Oct 2023
  • SimSIMD v2: Vector Similarity Functions 3x-200x Faster than SciPy and NumPy
    1 project | /r/programming | 7 Oct 2023
  • Show HN: SimSIMD vs. SciPy: How AVX-512 and SVE make SIMD cleaner and ML faster
    16 projects | news.ycombinator.com | 7 Oct 2023
    I encourage one to merge into e.g. {NumPy, SciPy, }; are there PRs?

    Though SymPy.physics only yet supports X,Y,Z vectors and doesn't mention e.g. "jaccard"?, FWIW: https://docs.sympy.org/latest/modules/physics/vector/vectors... https://docs.sympy.org/latest/modules/physics/vector/fields.... #cfd

    include/simsimd/simsimd.h: https://github.com/ashvardanian/SimSIMD/blob/main/include/si...

    conda-forge maintainer docs > Switching BLAS implementation:

  • SimSIMD v2: 3-200x Faster Vector Similarity Functions than SciPy and NumPy
    1 project | /r/Python | 7 Oct 2023
    Hello, everybody! I was working on the next major release of USearch, and in the process, I decided to generalize its underlying library - SimSIMD. It does one very simple job but does it well - computing distances and similarities between high-dimensional embeddings standard in modern AI workloads.
  • Comparing Vectors 3-200x Faster than SciPy and NumPy
    1 project | /r/Python | 7 Oct 2023
  • Show HN: U)Search Images demo in 200 lines of Python
    3 projects | news.ycombinator.com | 7 Sep 2023
    Hey everyone! I am excited to share updates on four of my & my teams' open-source projects that take large-scale search systems to the next level: USearch, UForm, UCall, and StringZilla. These projects are designed to work seamlessly together, end-to-endโ€”covering everything from indexing and AI to storage and networking. And yeah, they're optimized for x86 AVX2/512 and Arm NEON/SVE hardware.

    USearch [1]: Think of it as Meta FAISS on steroids. It's now quicker, supports clustering of any granularity, and offers multi-index lookups. Plus, it's got more native bindings than probably all other vector search engines combined: C++, C, Python, Java, JavaScript, Rust, Obj-C, Swift, C#, GoLang, and even slightly outdated bindings for Wolfram. Need to refresh that last one!

    UForm v2 [2]: Imagine a much smaller OpenAI CLIP but more efficient and trained on balanced multilingual datasets, with equal exposure to languages from English, Chinese, and Hindi to Arabic, Hebrew, and Armenian. UForm now supports 21 languages, is so tiny that you can run it in the browser, and outputs small 256-dimensional embeddings. Perfect for rapid image and video searches. It's already available on Hugging-Face as "unum-cloud/uform-vl-multilingual-v2".

    UCall [3]: It started as a FastAPI alternative focusing on JSON-RPC (instead of REST protocols), offering 70x the bandwidth and 1/50th the latency. It was good but not enough, so we've added REST and TLS support, broadening its appeal. I've merged that code, and it is yet to be tested. Early benchmarks suggest that we still hit the same 150'000-250'000 requests/s on a single CPU core in Python by reusing HTTPS connections.

    StringZilla [4]: This project lets you sift through multi-gigabyte or terabyte strings with minimal use of RAM and maximal use of SIMD and SWAR techniques.

    All these projects are engineered for scalability and efficiency, even on tight budgets. Our demo, for instance, works on hundreds of gigabytes of images using just a few gigabytes of RAM and no GPUs for AI inference. That is a toy example with a small, noisy dataset, and I look forward to showing a much larger setup. Interestingly, even this tiny setup illustrates issues common to UForm and much larger OpenAI CLIP models - the quality of Multi-Modal alignment [5]. It also shows how different/accurate the search results are across different languages. Synthetic benchmarks suggest massive improvements for some low-resource languages (like Armenian and Hebrew) and more popular ones (like Hindi and Arabic) [6]. Still, when we look at visual demos like this, I can see a long road ahead for us and the broader industry, making LLMs Multi-Modal in 2024 :)

    All of the projects and the demo code are available under an Apache license, so feel free to use them in your commercial projects :)

    PS: The demo looks much nicer with just Unsplash dataset of 25'000 images, but it's less representative of modern AI datasets, too small, and may not be the best way to honestly show our current weaknesses. The second dataset - Conceptual Captions - is much noisier, and quite ugly.

    [1]: https://github.com/unum-cloud/usearch

What are some alternatives?

When comparing nsimd and SimSIMD you can also consider the following projects:

simde - Implementations of SIMD instruction sets for systems which don't natively support them.

kuzu - Embeddable property graph database management system built for query speed and scalability. Implements Cypher.

sleef - SIMD Library for Evaluating Elementary Functions, vectorized libm and DFT

numpy-feedstock - A conda-smithy repository for numpy.

std-simd - std::experimental::simd for GCC [ISO/IEC TS 19570:2018]

usearch - Fast Open-Source Search & Clustering engine ร— for Vectors & ๐Ÿ”œ Strings ร— in C++, C, Python, JavaScript, Rust, Java, Objective-C, Swift, C#, GoLang, and Wolfram ๐Ÿ”

Vc - SIMD Vector Classes for C++

mkl_random-feedstock - A conda-smithy repository for mkl_random.

highway - Performance-portable, length-agnostic SIMD with runtime dispatch

xtensor-fftw - FFTW bindings for the xtensor C++14 multi-dimensional array library

highway - Highway - A Modern Javascript Transitions Manager

xtensor-blas-feedstock - A conda-smithy repository for xtensor-blas.