sliceslice-rs
Vc
sliceslice-rs | Vc | |
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2 | 6 | |
87 | 1,420 | |
- | 1.1% | |
5.9 | 6.1 | |
3 months ago | 3 months ago | |
Rust | C++ | |
MIT License | BSD 3-clause "New" or "Revised" License |
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sliceslice-rs
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Memchr 2.4 now has an implementation of substring search on arbitrary bytes
Aside from that, their SIMD implementation is better optimized than the one I wrote. Aside from the codegen problem I talked about on that PR, sliceslice does better with its confirmation step by specializing calls to memcmp for all needles up to length 16. This repeats the entire implementation 16 times or so (for each of SSE2 and AVX2, so 32 in total I believe), but lets the memcmp call be a bit better than a generic one. We could do the same in memchr, but I wanted to see how much mileage we could get with fewer copies of the code and a lower latency implementation of memcmp.
Vc
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The Bitter Truth: Python 3.11 vs Cython vs C++ Performance for Simulations
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).
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John "God" Carmack: C++ with a C flavor is still the best (also: Python performance "keeps hitting me in the face")
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.
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SPO600 project part 2
First of all about our project, I previously decided to work with VC library.https://github.com/VcDevel/Vc
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SPO600 project part 1
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
- Vc 1.4.2 released: portable SIMD programming for C++
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All C++20 core language features with examples
> - 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
What are some alternatives?
regex-automata - A low level regular expression library that uses deterministic finite automata.
highway - Performance-portable, length-agnostic SIMD with runtime dispatch
nsimd - Agenium Scale vectorization library for CPUs and GPUs
xsimd - C++ wrappers for SIMD intrinsics and parallelized, optimized mathematical functions (SSE, AVX, AVX512, NEON, SVE))
regex - An implementation of regular expressions for Rust. This implementation uses finite automata and guarantees linear time matching on all inputs.
Eigen
rust-memchr - Optimized string search routines for Rust.
blaze
volk - The Vector Optimized Library of Kernels
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).
ripgrep - ripgrep recursively searches directories for a regex pattern while respecting your gitignore
GLM - OpenGL Mathematics (GLM)