libCat VS Vc

Compare libCat vs Vc and see what are their differences.


🐈‍⬛ A runtime for C++23 w/out libC or POSIX. Smaller binaries, only arena allocators, SIMD, stronger type safety than STL, and value-based errors! (by Cons-Cat)
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libCat Vc
21 6
51 1,318
- 0.8%
8.8 0.0
about 1 month ago 3 months ago
C++ C++
GNU Affero General Public License v3.0 BSD 3-clause "New" or "Revised" License
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.


Posts with mentions or reviews of libCat. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-06-06.


Posts with mentions or reviews of Vc. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-12-30.
  • The Bitter Truth: Python 3.11 vs Cython vs C++ Performance for Simulations
    2 projects | /r/cpp | 30 Dec 2022
    Most high-performance math libraries perform a lot of vectorization (Eigen, etc) under the hood. And you've got stuff like Klein, Vc (which is reminiscent of std::valarray), etc. Then there's OpenMP's #pragma omp simd (assuming version 4.0 or greater).
  • John "God" Carmack: C++ with a C flavor is still the best (also: Python performance "keeps hitting me in the face")
    5 projects | /r/cpp | 21 Aug 2022
    I personally like the ideas in Parallelism v2 TS, which is available in for libstdc++ 11 onwards. The reference implementation is a library named Vc (afaik Vc is the most popular SIMD library for C++), and this has also been implemented in recent versions of HPX.
  • SPO600 project part 2
    2 projects | | 13 Apr 2022
    First of all about our project, I previously decided to work with VC library.
  • SPO600 project part 1
    8 projects | | 22 Mar 2022
    I've decided to switch to something better, and after a few hours of searching, I found this repository: NSIMD FastDifferentialCoding VS XSIMD
  • Vc 1.4.2 released: portable SIMD programming for C++
    3 projects | /r/cpp | 23 Jun 2021
  • All C++20 core language features with examples
    10 projects | | 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 (, 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 ?

    - 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:

What are some alternatives?

When comparing libCat and Vc you can also consider the following projects:

xsimd - C++ wrappers for SIMD intrinsics and parallelized, optimized mathematical functions (SSE, AVX, AVX512, NEON, SVE))

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



GLM - OpenGL Mathematics (GLM)

OpenBLAS - OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version.

MIRACL - MIRACL Cryptographic SDK: Multiprecision Integer and Rational Arithmetic Cryptographic Library is a C software library that is widely regarded by developers as the gold standard open source SDK for elliptic curve cryptography (ECC).

TinyExpr - tiny recursive descent expression parser, compiler, and evaluation engine for math expressions

Klein - P(R*_{3, 0, 1}) specialized SIMD Geometric Algebra Library

highway - Highway - A Modern Javascript Transitions Manager

Mission : Impossible (AutoDiff) - A concise C++17 implementation of automatic differentiation (operator overloading)

Versor - [older version] Versor 1.0 C++ library for conformal geometric algebra draw routines