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7 Posts

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March 26th, 2021 15:00

Sub NUMA Cluster - Setting in BIOS - Only allows Disabled - Why?

Poweredge R740 --> IDrac ---> Configuration --> Bios Settings

Sub NUMA Cluster Option is set to Disabled with no ability to change to Enabled setting. Only Disabled appears in the Bios Settings.

What would cause this? 

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March 28th, 2021 19:00

If your software doesn’t support NUMA or when it does, and it still shows bad performance it is recommended that you disable the option. There can be many occasions that this can happen/not happen depending on various setups users face, hence Dell provides disable options. Hope this helps and have a great one.

7 Posts

March 29th, 2021 07:00

Thank you. But my issue is that i have no "enable" option in the bios for this option. Why is that so?

7 Practitioner

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March 29th, 2021 12:00

Gazlinux,

 

Would you do me a favor and confirm, in the BIOS, what the setting is under System Profile Settings - System  Profile?

 

Also, what is being displayed under Node Interleaving as well?



7 Posts

March 29th, 2021 13:00

Here you go, Chris:

System Profile:  Performance Per Watt (DAPC)

Node Interleaving:  Disabled

 

6 Operator

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2.9K Posts

March 29th, 2021 13:00

Hello,

 

What BIOS revision are you on? I was looking through the firmware release history and have seen updates to BIOS and updates relating to NUMA, as well. If you aren't on the latest BIOS, I'd start with that.

 

For the Node Interleaving piece, I believe you have the setting you would want, per this document: https://dell.to/3cuxSBz

 

"Specifies if Non-Uniform Memory Architecture (NUMA) is supported. If this field is set to Enabled, memory interleaving is supported if a symmetric memory configuration is installed. If this field is set to Disabled, the system supports NUMA (asymmetric) memory configurations. This option is set to Disabled by default."

 

I'd personally set the performance profile to "Maximum Performance" for troubleshooting purposes, but I  wouldn't expect the issue would be sourcing from there.

7 Posts

March 29th, 2021 14:00

Bios Version: 2.10.0

The entire system is up to date

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March 30th, 2021 00:00

Hi, Memory Settings should have ” Node Interleavingin the menu items:

 

Node Interleaving : Specifies if Non-Uniform Memory architecture (NUMA) is supported. If this field is Enabled, memory interleaving is supported if a symmetric memory configuration is installed. If Disabled, the system supports NUMA (asymmetric) memory configurations. By default, Node Interleaving option is set to Disabled.

 

You can enable/disable this feature (Node Interleaving) for NUMA to suit your needs.

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