Difference between revisions of "GPU621/Group 2"
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| − | The threads window displays all the threads in your application | + | The threads window displays a list of all the threads in your application and their details. |
=== Switching Threads === | === Switching Threads === | ||
Revision as of 17:12, 2 March 2023
GPU621/DPS921 | Participants | Groups and Projects | Resources | Glossary
Contents
Group Members
Definitions
Processes
Every process is a separate instance of a particular program that is being run on a computer.
Threads
Threads are sets of instructions that get executed by the processes that contain them. The existence of multiple threads enables a process to separate work to be performed in parallel.
Debugging Single-threaded V.S. Multi-threaded Programs
Debugging usually occurs on a single threaded program by pausing the execution at a specific line of code. While the execution is paused, the values of all the variables can be inspected. This can be helpful to closely view what is occurring between each line of code.
Debugging a multithreaded program is different from debugging a single threaded program because each thread has its own sequence of execution, meaning that the point that the execution is paused at can vary for each thread.
OpenMP Debugging in Visual Studio
Debugging in Visual Studio will be demonstrated using this code:
#include <stdio.h>
#include <omp.h>
int main() {
int numThreads = omp_get_max_threads();
printf("Number of threads: %d\n", numThreads);
#pragma omp parallel
{
int threadNum = omp_get_thread_num() + 1;
printf("Hello thread #%d\n", threadNum);
}
printf("End of program");
}Threads Window
The threads window displays a list of all the threads in your application and their details.
Switching Threads
Freezing/Thawing Threads
Flagging Threads
Grouping Threads
Searching Threads
