SPSCQueue.h
VexCL
SPSCQueue.h | VexCL | |
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1 | - | |
829 | 695 | |
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4.6 | 0.0 | |
4 months ago | about 2 years ago | |
C++ | C++ | |
MIT License | MIT License |
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SPSCQueue.h
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Notes on Concurrency Bugs
A triple buffer is a good choice if all you want is polling the latest data at any given time, and you want to avoid mutexes altogether. If you want each piece of data to be delivered exactly once, you can use a queue (bounded or "unlimited" though the latter doesn't supply backpressure which I hear causes problems). SPSC lock-free bounded queues are dead simple to write, and can be tuned for higher throughput even with contention (https://github.com/rigtorp/SPSCQueue claims to be nice, and I haven't had issues working with it aside from having to peek and pop separately, but it's C++, and not a misuse-proof API since it doesn't use the "handles" idea I talked about, and you can push/read/pop from the wrong thread). If you want the reader to poll/WaitForMultipleObjects until the queue has items, that has to be done separately from the SPSC.
And mutexes make a lot of things easier... and introduces "oops wrong mutex!" (Rust solves it) and deadlock (Rust doesn't solve it).
VexCL
We haven't tracked posts mentioning VexCL yet.
Tracking mentions began in Dec 2020.
What are some alternatives?
moodycamel - A fast multi-producer, multi-consumer lock-free concurrent queue for C++11
ArrayFire - ArrayFire: a general purpose GPU library.
HPX - The C++ Standard Library for Parallelism and Concurrency
Boost.Compute - A C++ GPU Computing Library for OpenCL
libdill - Structured concurrency in C
Thrust - [ARCHIVED] The C++ parallel algorithms library. See https://github.com/NVIDIA/cccl
Taskflow - A General-purpose Parallel and Heterogeneous Task Programming System
libcds - A C++ library of Concurrent Data Structures
SObjectizer - SObjectizer: it's all about in-process message dispatching!
NCCL - Optimized primitives for collective multi-GPU communication
moderngpu - Patterns and behaviors for GPU computing