oneTBB VS Lazy

Use a library like https://github.com/oneapi-src/oneTBB

tbb

I have a project that depends on Intel's oneTBB. My project is structured as follows:

Intel TBB is still being maintained, it's just renamed to "OneAPI". The TBB part can be found here: https://github.com/oneapi-src/oneTBB

$ cd /tmp $ wget https://github.com/oneapi-src/oneTBB/releases/download/v2021.7.0/oneapi-tbb-2021.7.0-lin.tgz

For a more fully featured version of that idea with parallel algorithms and data structures, there are libraries like Thread Building Blocks.

Users should work with higher level primitives like tasks, parallel loops, asynchronous functions etc. Think TBB, Thrust, Taskflow, lparallel for CL, etc.

Consider using oneAPI Threading Building Blocks instead of naked threads.

Benchmarks is indeed a good question. Here is a C++17-style library for parallel function calls which avoids std::{function, future, promise} and uses disposable threads for running the functions. I have run a few benchmarks against a typical thread pool which uses a mutex and a condition variable and a vector of threads.

You might consider using this header-only library.

Using Lazy the simple header-only parallel library found here in Github.

Unless you really want to play with "raw" C++ threads, you may be able to completely avoid them by using a library like this one. See the simple examples on the main page and check if they would suit your application.

This header-only library might come in handy when experimenting with parallel functions. You can run any number of functions in parallel and gather the results conveniently. Take a look at the examples on the main page in Github and see if you find them useful.