Windows 7 reports "program not responding" when a heavy number-cruncher Visual C++ is running

If your calculation takes several hours - take a serious look at
CUDA and CUBLAS[^] - for a typical number crunching application - an iterative solver - it ought to do wonders.

Here is some info on what you may expect to gain
http://www.tomshardware.com/reviews/nvidia-cuda-gpgpu,2299.html[^]

Obviously, moving your number crunching to another thread, as SAKryukov suggests, is a good thing to do, and even splitting it, if possible, among multiple cores using multiple threads. This may require a significant amount of redesign - or if your lucky - simply deviding the iterations of the outer loop between the threads.

You may find that ACE[^] has the C++ classes required to facilitate this move in a very elegant manner.

Best regards
Espen Harlinn

Just make your calculations in a worker thread. An excellent resource on worker threads[^]. :)

If you need further assistance you have to share more details about your application.
Is it GUI or Console application, does it use MFC, even you can post relevant parts of your code, these details are all welcome. :)

maybe this help ?

http://forums.devx.com/archive/index.php/t-91311.html[^]


or this : ?

void DoEvents()
{
    MSG msg;
    long sts;
    do {
    if (sts = PeekMessage(&msg, (HWND) NULL, 0, 0, PM_REMOVE)) {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    } while (sts);
}

insert it in some place in your code ...

example :

...
...
while(...)
{
   ...
   ...
   DoEvents();
}
...
for(...)
{
   ...
   ...
   DoEvents();
}

... whill be there some loop in your calculation ? that is cpu expensive, insert DoEvents to Release control to windows