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Reserved Cores in the Intel Xeon Phi

“In the case of the Intel Xeon Phi coprocessor, although 60 cores are commonly used for computation, there is another core that is available, but not traditionally used as part of a simulation. Experiments using the 61st core for actual computation while running a reverse Monte Carlo ray tracing application for the modeling of radiative heat transfer, demonstrated that the use of another core improved performance, and that oversubscribing the coprocessor operating system thread did not degrade the performance.”

Heterogeneous MPI Application Optimization

“Two components of ITAC, the Intel Trace Collector and the Intel Trace Analyzer can be used to understand the performance and bottlenecks of a Monte Carlo simulation. When each of the strike prices are distributed to both the Intel Xeon cores the Intel Xeon Phi coprocessor, the efficiency was about 79%, as the coprocessors can calculate the results much faster than the main CPU cores.”