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XK7 CPU Description

See this article in context within the following user guides: Titan

Each Titan compute node contains (1) AMD Opteron™ 6274 (Interlagos) CPU. Each CPU contains (2) die. Each die contains (4) “bulldozer” compute units and a shared L3 cache. Each compute unit contains (2) integer cores (and their L1 cache), a shared floating point scheduler, and shared L2 cache.

To aid in task placement, each die is organized into a NUMA node. Each compute node contains (2) NUMA nodes. Each NUMA node contains a die’s L3 cache and its (4) compute units (8 cores).

This configuration is shown graphically below.

Opteron 6274 CPU Schematic