Answer by Antonin GAVREL for How to "multithread" C code
I think all the answers lack a concrete example with implementation of threads across different function, passing parameters and some benchmarks:// NB: gcc -O3 pthread.c -lpthread && time...
View ArticleAnswer by Ciro Santilli OurBigBook.com for How to "multithread" C code
C11 threads in glibc 2.28.Tested in Ubuntu 18.04 (glibc 2.27) by compiling glibc from source: Multiple glibc libraries on a single hostExample from:...
View ArticleAnswer by Mohd Shibli for How to "multithread" C code
You can use pthreads to perform multithreading in C.here is a simple example based on pthreads.#include <pthread.h>#include <stdio.h>void *mythread1(); //thread prototypevoid...
View ArticleAnswer by darklon for How to "multithread" C code
Intel's C++ compiler is actually capable of automatically paralellizing your code. It's just a compiler switch you need to enable. It doesn't work as well as OpenMP though (ie. it doesn't always...
View ArticleAnswer by ifyes for How to "multithread" C code
If an iteration in loop is independent of the ones before it, then there's a very simple approach: try multi-processing, rather than multi-threading. Say you have 2 cores and ntimes is 100, then...
View ArticleAnswer by Mecki for How to "multithread" C code
Your code is not automatically multi-threaded by the compiler if that was your question. Please note that the C standards themselves know nothing about multi-threading, since whether you can use...
View ArticleAnswer by AlcubierreDrive for How to "multithread" C code
To specifically address the "automatically multithreaded" part of the OP's question:One really interesting view of how to program parallelism was designed into a language called Cilk Plus invented by...
View ArticleAnswer by user191776 for How to "multithread" C code
One alternative to multithread your code would be using pthreads ( provides more precise control than OpenMP ).Assuming x, y& result are global variable arrays,#include <pthread.h>...void...
View ArticleAnswer by Marcin for How to "multithread" C code
a good exercise for learning concurrent programming in any language would be to work on a thread pool implementation.In this pattern you create some threads in advance. Those threads are treated as an...
View ArticleAnswer by nategoose for How to "multithread" C code
You should have a look at openMP for this. The C/C++ example on this page is similar to your code:https://computing.llnl.gov/tutorials/openMP/#SECTIONS#include <omp.h>#define N 1000main (){int...
View ArticleAnswer by asveikau for How to "multithread" C code
If you are hoping to provide concurrency for a single loop for some kind of scientific computing or similar, OpenMP as @Novikov says really is your best bet; this is what it was designed for.If you're...
View ArticleAnswer by ValiRossi for How to "multithread" C code
Depending on the OS, you could use posix threads. You could instead implement stack-less multithreading using state machines. There is a really good book entitled "embedded multitasking" by Keith E....
View ArticleAnswer by Novikov for How to "multithread" C code
If the task is highly parallelizable and your compiler is modern, you could try OpenMP. http://en.wikipedia.org/wiki/OpenMP
View ArticleHow to "multithread" C code
I have a number crunching application written in C. It is kind of a main loop that for each value calls, for increasing values of "i", a function that performs some calculations. I read about...
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