Article ID: 000094293 Content Type: Troubleshooting Last Reviewed: 04/04/2023

How to Configure the High-Bandwidth Memory (HBM) for Bare Metal Instance

Environment

Intel® Xeon® processors (formerly code named Sapphire Rapids) with high-bandwidth memory (HBM) technology

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Summary

Configuration for the HBM mode for Intel® Xeon® processors (formerly code named Sapphire Rapids) with high-bandwidth memory (HBM) technology.

Description
  • Unable to identify if HBM memory is reported to the OS.
  • Unable to change the HBM configuration to expose HBM as memory to the OS.
Resolution

The HBM and DDR memory can be configured in three memory modes:

  • HBM-only
  • Flat (1LM)
  • Cache (2LM)

Configure the memory mode from the BIOS menu at boot.

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