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Wednesday, March 15 • 8:30am - 10:00am
Tutorial: An introduction to Intel’s Knights Landing and its Performance Characteristics

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Intel’s next generation Xeon Phi, Knights Landing (KNL), brings many changes from the first generation, Knights Corner (KNC). The new processor supports self-­‐‑hosted nodes, connects cores via a mesh topology rather than a ring, and uses a new memory technology, MCDRAM. It is based on Intel’s x86 technology with wide vector units and hardware threads. Many of the lessons learned from using KNC do still apply, such as efficient multi-­‐‑ threading, optimized vectorization, and strided memory access.

In this tutorial we will review the KNL architecture, and discuss the differences between KNC and KNL. We will also discuss the impact of the different MCDRAM memory configurations and the different modes of cluster configuration. Recommendations regarding hybrid MPI+OMP execution when using KNL with the Intel OmniPath fabric will be provided.

We will also analyze the performance of some of the most popular applications in Stampede when running on KNL, and compare it to alternative platforms.


Carlos Rosales-Fernandez

Texas Advanced Computing Center, The University of Texas at Austin

Wednesday March 15, 2017 8:30am - 10:00am
Room 280

Attendees (7)