IPMCTL User Guide
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Version 1.x
Version 1.x
  • IPMCTL User Guide
  • Installing IPMCTL
    • Installing IPMCTL packages on Linux
    • Building and Installing IPMCTL from Source on Linux
    • Installing IPMCTL on Microsoft Windows using the MSI Installer
    • Building and Installing IPMCTL on Microsoft Windows from Source
  • Basic Usage
  • Module Discovery
    • Show System Capabilities
    • Show Socket
    • Show Topology
    • Show Memory Resources
    • Show Device
  • Provisioning
    • Concepts
    • Create Memory Allocation Goal
    • Provision App Direct
    • Provision Memory Mode
    • Provision Mixed Mode
    • Show Memory Allocation Goal
    • Dump Memory Allocation Settings
    • Load Memory Allocation Goal
    • Delete Memory Allocation Goal
  • Security
    • Enable Device Security
    • Change Device Passphrase
    • Change Device Security
    • Erase Device Data
  • Instrumentation
    • Show Sensor
    • Change Sensor Settings
    • Show Device Performance
  • Debug
    • Run Diagnostic
    • Show Error Log
    • Dump Debug Log
    • Show ACPI Tables
    • Show Device Platform Configuration Data
    • Delete Device Platform Configuration Data
    • Inject Error
  • Support and Maintenance
    • Show Events
    • Version and Firmware
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Provisioning

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Last updated 5 years ago

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Intel Optane DC persistent memory modules can be provisioned into three different operating modes:

  • App Direct: Persistent memory exposed as block devices to operating system and DRAM is used as main memory.

  • Memory Mode: Uses persistent memory as main memory and DRAM is used as a cache not explicitly managed by the operating system. Data placement is managed by the memory controller.

  • Mixed Mode: A combination of App Direct and Memory Modes where a percentage of total memory is allocated for Memory Mode, and the rest is used for App Direct.

You can learn more about each operating mode and which is right for your application in this .

WARNING: Provisioning or changing modes may result in data loss. Data should be backed up to other storage before executing this command.

Changing a memory allocation goal modifies how the platform firmware maps persistent memory in the system address space which may result in data loss or inaccessible data, but does not explicitly delete or modify user data found in persistent memory.

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