Visualizing openMP tasks with FGA

[Fritz1]

Hi,

I am trying to use the experimental support for OpenMP Applications in the Flow Graph Analyzer to visualize my openMP tasks. I am able to generate output in a directory _fga_YYYMMDD_HHMMSS as described in the user guide, but when I try converting this output to the GraphML and TraceML formats with fgt2xml, I always get the warning "WARNING: 1 tasks do not have completions with task_end - ignoring tasks for thread(i)  !" for all threads I been running, and while there are .graphml and .traceml files, in FGA I only see omp0::0 and if I double click it, I see omp0::n0::n1 and omp0::n0::n2 as for the empty parallel region in the example in the user guide.

This is true for complex programs but also for this simple hello world example where I definitely would expect to see the tasks in FGA:

int main()
{
#pragma omp parallel
    {
        int s;
#pragma omp single
        {
#pragma omp task
            {
                std::cout << "Hello World!" << std::endl;
            }
#pragma omp task shared (s) depend (out: s)
            {
                s = 42;
                std::cout << s << std::endl;
            }
#pragma omp task shared (s) depend (in: s)
            {
                s += 2;
                std::cout << s << std::endl;
            }
        }
    }
}

I do see in the per-thread view that the tasks are executed by different threads, but in the Graph Canvas they do not show up.

I would be very grateful for any hints on how I can get this to work.

[Vipin_S_Intel]

Hi Fritz, we would like to inform you that we are routing your query to the dedicated team for further assistance.

[yuzhang3_intel]

It looks like the same issue is submitted repeatedly. We have reported the issue to the engineering team and update later, thanks.

https://community.intel.com/t5/Analyzers/Visualizing-openMP-tasks-with-FGA/m-p/1587462#M24541

[clevels]

Flow Graph Analyzer feature of Intel Advisor will be discontinued in 2025 or later. Customers who have purchased Intel® Priority Support will continue to receive support. If you have Priority Support please file this through our online service center https://supporttickets.intel.com/s/?language=en_US