NVIDIA NCP-AII

Repeated consolidation exercise

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Universal answer template

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Propositional trend analysis is accurate

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NVIDIA AI Infrastructure Sample Questions:

1. You've flashed the BlueField OS to your SmartNlC, but you need to customize the kernel command line arguments (bootargs) to enable a specific feature. Where is the MOST appropriate place to modify these arguments for persistent changes that survive reboots?

A) In the '/proc/cmdline' file. This allows immediate changes.
B) Directly in the kernel image file itself using a hex editor.
C) In the '/etc/default/grub' file on the BlueField OS, followed by updating the GRUB configuration.
D) Passing it as an argument to bfboot during deployment.
E) In the bootloader configuration file (e.g., extlinux.conf or grub.cfg) on the BlueFieId's flash memory.

2. You are tasked with updating the NVIDIA drivers on a cluster of servers running a critical A1 training workload. To minimize downtime and ensure a smooth transition, what is the best approach for performing the driver update?

A) Perform a rolling update, updating one server at a time while migrating workloads to the remaining servers.
B) Simultaneously update the drivers on all servers in the cluster during a maintenance window.
C) Update the drivers only on the head node of the cluster, as the compute nodes will automatically inherit the new drivers.
D) Create a new cluster with the updated drivers and migrate the workload after thorough testing.
E) Utilize a containerized approach with driver containers and orchestrate a rolling redeployment.

3. You're optimizing an Intel Xeon server with 4 NVIDIAAIOO GPUs for a computer vision application that uses CODA. You notice that the GPU utilization is fluctuating significantly, and performance is inconsistent. Using 'nvprof, you identify that there are frequent stalls in the CUDA kernels due to thread divergence. What are possible causes and solutions?

A) The GPUs are overheating, causing thermal throttling. Improve the server's cooling.
B) The CUDA compiler is generating suboptimal code. Try using different compiler optimization flags (e.g., '-O3' or '-ftz=true').
C) The CUDA code contains conditional branches that lead to different execution paths for different threads within the same warp. Rewrite the CUDA code to minimize branching and favor uniform execution paths within warps.
D) The CUDA driver version is incompatible with the CUDA toolkit version. Update the CUDA driver to a compatible version.
E) The input data is not properly aligned in memory. Ensure that data is aligned to 128-byte boundaries using aligned memory allocation techniques.

4. You are installing the NGC CLI using 'pip' behind a corporate proxy. The installation fails due to connection errors. How do you configure pip' to use the proxy during the NGC CLI installation?

A) NGC CLI does not support the use of proxies
B) Create a 'pip.conf file in the appropriate directory (e.g., '-/.pip/pip.conf) and configure the proxy settings within the file.
C) Use the '-proxy option with the 'pip install' command, specifying the proxy server address and port.
D) Download the NGC CLI package manually and install it offline.
E) Set the 'http_proxy' and 'https_proxy' environment variables with the proxy server address and port.

5. Consider the following 'Ispci' output snippet after installing an NVIDIA GPU:
03:00.0 VGA compatible controller: NVIDIA Corporation Device 2236 (rev al) Subsystem: Dell Device 1234 Kernel driver in use: nvidia Kernel modules: nvidiafb, nouveau, nvidia drm, nvidia What does this output indicate, and what is the POTENTIAL issue?

A) The GPU is installed, but the 'nvidiafb' driver is causing conflicts. Solution: Remove the 'nvidiafb' module.
B) The output indicates a hardware failure and requires a replacement of the GPU.
C) The GPU is not properly installed, as indicated by 'Device 2236'. Solution: Re-seat the GPU.
D) The GPU is installed, but the open-source 'nouveau' driver is loaded instead of the proprietary NVIDIA driver, which could lead to suboptimal performance.
E) Solution: Blacklist 'nouveau' and ensure the NVIDIA driver is correctly configured.
F) The GPU is correctly installed, and the proprietary NVIDIA driver is loaded.

Solutions: