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Why is my multi-threaded program not terminating properly?


Why is my multi-threaded program not terminating properly?

By : Kutty Amirtha
Date : November 21 2020, 11:01 PM
should help you out Instead of calling pthread_exit(NULL) you should put a loop of join calls to wait for the threads to complete:
code :
for (int i=0; i<numlist.size(); i++) {
    void *rv;
    pthread_join(threads[i], &rv);
}


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Multi-Threaded MPI Process Suddenly Terminating

Multi-Threaded MPI Process Suddenly Terminating


By : koblongata
Date : March 29 2020, 07:55 AM
I wish this helpful for you you have to use thread safe version of mpi runtime. read up on MPI_Init_thread.
Multi threaded program takes longer to execute than the Single Threaded Program

Multi threaded program takes longer to execute than the Single Threaded Program


By : user32308
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further First of all, you are using processor-clock ticks to measure the performance, and by that measure any multi-threaded algorithm will be slower than an equivalent single-threaded algorithm. The reason is because this measure effectively counts the number of instructions that gets executed and threading always adds a little overhead to an algorithm.
To get a proper measurement of performance, you need to measure the wall-clock time. This way, the measurement can accurately reflect the work that gets done in parallel by different cores/processors.
Multi-Threaded program runs slower than single threaded

Multi-Threaded program runs slower than single threaded


By : 지향은
Date : March 29 2020, 07:55 AM
I wish did fix the issue.
I understand that the result will not be correct but it is crawling compared to single threaded one
GDB hangs when multi-threaded python extension is used to debug multi threaded program

GDB hangs when multi-threaded python extension is used to debug multi threaded program


By : kishore dasari
Date : March 29 2020, 07:55 AM
I wish this help you From this blog post:
code :
import gdb
import threading
import pysigset, signal # Import these packages!

def plot_thread():
    import time
    while True:
        print('Placeholder for a window event loop.')
        time.sleep(1)
        pass
    pass

class PlotterCommand(gdb.Command):
    def __init__(self):
        super(PlotterCommand, self).__init__("plot",
                                            gdb.COMMAND_DATA,
                                            gdb.COMPLETE_SYMBOL)
        self.dont_repeat()
        pass

    def invoke(self, arg, from_tty):
        with pysigset.suspended_signals(signal.SIGCHLD): # Disable signals here!
            plot_thread_instance=threading.Thread(target=plot_thread)
            plot_thread_instance.daemon=True
            plot_thread_instance.start()
            pass
        pass

    pass

PlotterCommand()
how to properly exit a multi threaded program

how to properly exit a multi threaded program


By : ZCHPeng
Date : March 29 2020, 07:55 AM
seems to work fine If I understand your problem correctly, you may have an Invoke call about to happen on your form just as you've closed the form. I've had this happen as well.
What I've done is to set a "shutdown" variable when I start to close the form, and then use AppDomain.CurrentDomain.UnhandledException to watch for InvalidOperationException (or whatever you're getting), and ignore if shutdown is set.
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