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Maximize Parallelization with Threading On A Core

To get maximum parallelization for an application, not only must the application be developed to take advantage of multiple cores, but should also have the code in place to keep a number of threads working on each core. A modern processor architecture, such as the Intel Xeon Phi processor, can accommodate at least 4 threads for each core. “On the Intel Xeon Phi processor, each of the threads per core is known as a hyper-thread. In this architecture, all of the threads on a core progress through the pipeline simultaneously, producing results much more quickly than if just one thread was used. The processor decides which thread should progress, based on a number of factors, such as waiting for data from memory, instruction availability, and stalls.”