Simple Question on OpenMP

Question

Say we have a serial application that stops normally for a while 'till a completely independent function is computed. How can one use OpenMP to spawn that function only to a thread and only printf its result when it ends? [without stopping the main application]

EDIT: Can it be done if the independent function is run inside the main app?

Does this answer your question? Execute functions in parallel using openmp — user202729
– user202729, Commented Jan 22, 2021 at 8:51

Pablo Santa Cruz · Accepted Answer · 2010-11-27 14:03:18Z

1

You can use parallel sections.

#pragma omp parallel sections
{
   #pragma omp section
   YourMainApp ();

   #pragma omp section
   YourIndepFunction ();
}

answered Nov 27, 2010 at 14:03

Pablo Santa Cruz

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4 Comments

j riv Over a year ago

TY. Can the above be done by having the independent function inside the main app?

Pablo Santa Cruz Over a year ago

They both should run in independent threads. But I guess ultimately it's actually up to the OpenMP implementation...

j riv Over a year ago

[I edited the initial comment-question] Can the above be done by having the independent function inside the main app?

j riv Over a year ago

Nevermind, I opened a new question stackoverflow.com/questions/4292191/… and it answered my confusion.

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