Cache Hierarchy and Memory Subsystem of the AMD Opteron Processor

  • Authors:
  • Pat Conway;Nathan Kalyanasundharam;Gregg Donley;Kevin Lepak;Bill Hughes

  • Affiliations:
  • Advanced Micro Devices;Advanced Micro Devices;Advanced Micro Devices;Advanced Micro Devices;Advanced Micro Devices

  • Venue:
  • IEEE Micro
  • Year:
  • 2010

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Abstract

The 12-core AMD Opteron processor, code-named "Magny Cours," combines advances in silicon, packaging, interconnect, cache coherence protocol, and server architecture to increase the compute density of high-volume commodity 2P/4P blade servers while operating within the same power envelope as earlier-generation AMD Opteron processors. A key enabling feature, the probe filter, reduces both the bandwidth overhead of traditional broadcast-based coherence and memory latency.