Top 23 C++ Concurrency Projects

• swoole-src

  0 16,403 9.4 C++

  🚀 Coroutine-based concurrency library for PHP

• libzmq

  0 6,662 8.4 C++

  ZeroMQ core engine in C++, implements ZMTP/3.1

• concurrentqueue

  1 5,189 6.7 C++

  A fast multi-producer, multi-consumer lock-free concurrent queue for C++11

  Latest mention: Functional programming in C++ (2012) | news.ycombinator.com | 2020-12-28

  > So the big win with functional programming is easier testibility and fewer hazards when trying to multi-thread your code.

  To give you my experience: during my phd, I developed https://ossia.io in C++. For the manuscript redaction, I rewrote all the core algorithms in pure functional OCaml. When I did some tests, performance was slower than -O0 C++ (so it's not even a given that multithreaded OCaml would outperform single-thread C++), the tests weren't meaningfully simpler to write, and it would be pretty much impossible to have an average comp. sci. student contribute to the code.

  My experience multi-threading C++ code is, "slap cpp-taskflow, TBB, RaftLib" or any kind of threaded task system and enjoy arbitrary scaling. Hardly the pain it is made to be unless you have a need to go down to std::thread level, but even then using something like https://github.com/cameron314/concurrentqueue to communicate between threads makes things extremely painless.

• taskflow

  0 4,803 9.5 C++

  A General-purpose Parallel and Heterogeneous Task Programming System

• arrayfire

  0 3,285 8.6 C++

  ArrayFire: a general purpose GPU library.

• thrust

  0 3,129 8.5 C++

  The C++ parallel algorithms library.

• actor-framework

  0 2,439 9.1 C++

  An Open Source Implementation of the Actor Model in C++

• readerwriterqueue

  0 1,982 5.5 C++

  A fast single-producer, single-consumer lock-free queue for C++

• libcds

  0 1,761 7.3 C++

  A C++ library of Concurrent Data Structures

• hpx

  2 1,610 9.8 C++

  The C++ Standard Library for Parallelism and Concurrency

  Latest mention: latest c++ theory vs reality | reddit.com/r/cpp | 2021-01-11

• nccl

  0 1,429 4.0 C++

  Optimized primitives for collective multi-GPU communication

• compute

  0 1,180 0.0 C++

  A C++ GPU Computing Library for OpenCL

• moderngpu

  0 1,162 0.1 C++

  Patterns and behaviors for GPU computing

• junction

  0 1,114 0.0 C++

  Concurrent data structures in C++

• cpp.react

  0 889 0.0 C++

  C++React: A reactive programming library for C++11.

• parallel-hashmap

  3 797 7.3 C++

  A family of header-only, very fast and memory-friendly hashmap and btree containers.

  Latest mention: A Debugging Tip: Write Custom Visualizers in Visual Studio | reddit.com/r/cpp | 2021-01-11

  Yes, these are nice, I wrote some for the phmap library. I wish that there was a standard (and portable across compilers) way to do this though, maybe by adding a specific function to our classes.

• RaftLib

  0 707 7.6 C++

  The RaftLib C++ library, streaming/dataflow concurrency via C++ iostream-like operators

• continuable

  0 646 4.3 C++

  C++14 asynchronous allocation aware futures (supporting then, exception handling, coroutines and connections)

• vexcl

  0 621 3.2 C++

  VexCL is a C++ vector expression template library for OpenCL/CUDA/OpenMP

• stdgpu

  0 510 8.2 C++

  stdgpu: Efficient STL-like Data Structures on the GPU

• MPMCQueue

  0 435 2.8 C++

  A bounded multi-producer multi-consumer concurrent queue written in C++11

• executors

  0 361 0.0 C++

  C++ library for executors

• Bolt

  0 343 0.0 C++

  Bolt is a C++ template library optimized for GPUs. Bolt provides high-performance library implementations for common algorithms such as scan, reduce, transform, and sort.

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