Table of Contents

Non Uniform Memory Architecture

Unlucky NUMA Placement

Optimized NUMA placement

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Non Uniform Memory Architecture

•  Each CPU has its own memory (fast)
•  Other memory accessed via other CPUs (slower)

 

Unlucky NUMA Placement

•  Without NUMA optimizations, this can happen

 

Optimized NUMA placement

•  With numad or numa/core
•  3-15% performance improvement typical