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--- single-openmp [June 11, 2026 at 11:08] – Ivan Janevski
+++ single-openmp [Unknown date] (current) – removed - external edit (Unknown date) 127.0.0.1
@@ Line 1: / Line 1: @@
-# Single (OpenMP)
-**Single** is an OpenMP directive that runs the enclosed block on exactly one thread, whichever arrives first. All other threads skip the block and wait at an implicit barrier at the end, so the whole team is synchronised before continuing.
-It is commonly used for initialisation, I/O, and task generation.
-```c
-#pragma omp parallel
-{
-    #pragma omp single
-    initialise();    // one thread runs this; others wait at the closing brace
-    process();       // all threads continue here once initialise() is done
-}
-```
-The `nowait` clause removes the implicit barrier (`#pragma omp single nowait`), but is only safe when the rest of the parallel block does not depend on what the single block produced.