Article 23MXQ Best Threads Per Core with Intel Xeon Phi

Best Threads Per Core with Intel Xeon Phi

by
MichaelS
from High-Performance Computing News Analysis | insideHPC on (#23MXQ)
phi-150x150.jpg

"When designing an application that contains many threads and less cores than threads, it is important to understand what is the optimal number of threads that should be assigned to a core. This value should be parameterized, in order to easily run tests to determine which is the optimum value for a given machine. One thread per core on the Intel Xeon Phi processor will give the highest performance per thread. When the number of threads per core is set at two or four, the individual thread performance may be lower, but the aggregate performance will be greater."

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