Nvidia DGX B200 - Disabling CPU Mitigations; Re-Enabling CPU Mitigations

NVIDIA DGX B200 User Guide
4.8.2. Disabling CPU Mitigations
Ϫ Caution
Performing the following instructions will disable the CPU mitigations provided by the DGX OS
Server software.
1. Install the nv-mitigations-off package.
sudo apt install nv-mitigations-off -y
2. Reboot the system.
3. Verify CPU mitigations are disabled.
cat ∕sys∕devices∕system∕cpu∕vulnerabilities∕*
The output should include several Vulnerable lines. For an example output, refer to Determining
the CPU Mitigation State of the DGX System.
4.8.3. Re-enabling CPU Mitigations
1. Remove the nv-mitigations-off package.
sudo apt purge nv-mitigations-off
2. Reboot the system.
3. Verify CPU mitigations are enabled.
cat ∕sys∕devices∕system∕cpu∕vulnerabilities∕*
The output should include several Mitigations lines. See Determining the CPU Mitigation State
of the DGX System for example output.
4.8. Managing CPU Mitigations 31