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Intel Xeon Phi Processor: A Look at the Basic Architecture

“Designing a new generation of hardware with such high performance needs to make sure that developers understand the basics, and are familiar with the architecture of a new system. Single thread performance with the Intel Xeon Phi processor is significantly better than previous designs. In addition, in order to speed up performance even more, vector processing, where applicable is critical in application performance. With two vector processing units (VPUs) per core, applications can execute two 512-bit vector multiply-add instructions per cycle. Each of these cores can deliver 32 double precision operations per clock cycle. The VPU executes all of the floating point operations as well as legacy instructions from SSE to AVX to the new AVX-512 instructions.”