Thread Affinity
Some vendors recommend setting the processor affinity on OpenMP threads to associate them with particular processor cores. This minimizes thread migration and context-switching cost among cores. It also improves the data locality and reduces the cache-coherency traffic among the cores (or processors).
Read more about this topic: OpenMP
Famous quotes containing the words thread and/or affinity:
“A sleeping man holds in a circle around him the thread of the hours, the order of years and of worlds. He consults them instinctively upon awaking and in one second reads in them the point of the earth that he occupies, the time past until his arousal; but their ranks can be mingled or broken.”
—Marcel Proust (1871–1922)
“This is of the loon—I do not mean its laugh, but its looning,—is a long-drawn call, as it were, sometimes singularly human to my ear,—hoo-hoo-ooooo, like the hallooing of a man on a very high key, having thrown his voice into his head. I have heard a sound exactly like it when breathing heavily through my own nostrils, half awake at ten at night, suggesting my affinity to the loon; as if its language were but a dialect of my own, after all.”
—Henry David Thoreau (1817–1862)