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GPU Card Installation
Requirement For All GPUs: Memory-Mapped I/O Greater Than
4 GB
All supported GPU cards require enablement of the BIOS setting that allows greater than 4 GB of
memory-mapped I/O (MMIO).
• Standalone Server: If the server is used in standalone mode, this BIOS setting is enabled by default:
• If the server is integrated with Cisco UCS Manager and is controlled by a service profile, this setting is
Step 1
Refer to the Cisco UCS Manager configuration guide (GUI or CLI) for your release for instructions on configuring service
profiles:
Cisco UCS Manager Configuration Guides
Step 2
Refer to the chapter on Configuring Server-Related Policies > Configuring BIOS Settings.
Step 3
In the section of your profile for PCI Configuration BIOS Settings, set
the following:
• Disabled—Does not map 64-bit PCI devices to 64 GB or greater address space.
• Enabled—Maps I/O of 64-bit PCI devices to 64 GB or greater address space.
• Platform Default—The policy uses the value for this attribute contained in the BIOS defaults for the server. Use
this only if you know that the server BIOS is set to use the default enabled setting for this item.
Step 4
Reboot the server.
Note
Cisco UCS Manager pushes BIOS configuration changes through a BIOS policy or default BIOS settings to
the Cisco Integrated Management Controller (CIMC) buffer. These changes remain in the buffer and do not
take effect until the server is rebooted.
Installing a Double-Wide GPU Card
Note
Make sure that you have the correct power cable for your GPU card, as described in the following table.
Advanced > PCI Configuration > Memory Mapped I/O Above 4 GB [Enabled]
If you need to change this setting, enter the BIOS Setup Utility by pressing F2 when prompted during
bootup.
enabled by default in the service profile when a GPU is present.
To change this setting manually, use the following procedure.
Requirement For All GPUs: Memory-Mapped I/O Greater Than 4 GB
Memory Mapped IO Above 4GB Config
Cisco UCS C480 M5 Server Installation and Service Guide
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