Which scripting languages support multi-core programming?
I have written a little python application and here you can see how Task Manager looks during a typical run.
(source: weinzierl.name)
While the application is perfectly multithreaded, unsurprisingly it uses only one CPU core. Regardless of the fact that most modern scripting languages support multithreading, scripts can run on one CPU core only.
Ruby, Python, Lua, PHP all can only run on a single core. Even Erlang, which is said to be especially good for concurrent programming, is affected.
Is there a scripting language that has built in support for threads that are not confined to a single core?
WRAP UP
Answers were not quite what I expected, but the TCL answer comes close.
I'd like to add perl, which (much like TCL) has interpreter-based threads.
Jython, IronPython and Groovy fall under the umbrella of combining a proven language with the proven virtual machine of another language. Thanks for your hints in this direction.
I chose Aiden Bell's answer as Accepted Answer. He does not suggest a particular language but his remark was most insightful to me.
Thread syntax may be static, but implementation across operating systems and virtual machines may change
Your scripting language may use true threading on one OS and fake-threads on another.
If you have performance requirements, it might be worth looking to ensure that the scripted threads fall through to the most beneficial layer in the OS. Userspace threads will be faster, but for largely blocking thread activity kernel threads will be better.
- Multiple threads and CPU cache
- How to merge private arrays into a shared one in OMP - C?
- FastAPI python: How to run a thread in the background?
- Do std::async and std::future use mutexes and a condition variable under the hood?
- Atomically modifying multiple IORefs in concurrent Haskell
- Using = operator on atomic variable?
- Synchronizing multiple instances of same Greasemonkey script
- Python logger: a different log record attribute for each thread
- Replace 'BackgroundWorker' With 'Thread '
- How to launch 2 requests in python in parallel
- Correct way to parallelize request processing in Flask
- perl CGI threads not terminating
- Cancel background task (terminate QThread) in PyQt
- Do Java 21 virtual threads address the main reason to switch to reactive single-thread frameworks?
- Using module 'subprocess' with timeout
- How to get the return value from a thread?
- Can same thread wait and run task simultaneously?
- How to change the name of a thread
- C# Algorithmic Stock Trading
- concurrent.futures.ThreadPoolExecutor doesn't print errors
- If Redis is single threaded, how can it be so fast?
- Why Redis is single threaded (event driven)
- Redis is single-threaded, then how does it do concurrent I/O?
- pthread_cancel and cancellation point
- SWIFT TASK CONTINUATION MISUSE: - method leaked its continuation! - Not blocking main thread?
- Why is AtomicInteger needed if writes and reads to int variables are atomic?
- What is the best way to execute C++ functions asynchronously when the functions don't return a value?
- Multithreaded fork
- OpenOCD SMP Only Shows 1 Thread In GDB
- For which specific use-case is the new `System.Threading.Lock` in .Net 9 introduced?