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NEW QUESTION # 168
You are deploying an AI model on a cloud-based infrastructure using NVIDIA GPUs. During the deployment, you notice that the model's inference times vary significantly across different instances, despite using the same instance type. What is the most likely cause of this inconsistency?
Answer: D
Explanation:
Variability in the GPU load due to other tenants on the same physical hardware is the most likely cause of inconsistent inference times in a cloud-based NVIDIA GPU deployment. In multi-tenant cloud environments (e.g., AWS, Azure with NVIDIA GPUs), instances share physical hardware, and contention for GPU resources can lead to performance variability, as noted in NVIDIA's "AI Infrastructure for Enterprise" and cloud provider documentation. This affects inference latencydespite identical instance types.
CUDA version differences (A) are unlikely with consistent instance types. Unsuitable model architecture (B) would cause consistent, not variable, slowdowns. Network latency (C) impacts data transfer, not inference on the same instance. NVIDIA's cloud deployment guidelines point to multi-tenancy as a common issue.
NEW QUESTION # 169
A data center is designed to support large-scale AI training and inference workloads using a combination of GPUs, DPUs, and CPUs. During peak workloads, the system begins to experience bottlenecks. Which of the following scenarios most effectively uses GPUs and DPUs to resolve the issue?
Answer: B
Explanation:
Offloading network, storage, and security management from the CPU to the DPU, freeing up the CPU and GPU to focus on AI computation(C) most effectively resolves bottlenecks using GPUs and DPUs. Here' s a detailed breakdown:
* DPU Role: NVIDIA BlueField DPUs are specialized processors for accelerating data center tasks like networking (e.g., RDMA), storage (e.g., NVMe-oF), and security (e.g., encryption). During peak AI workloads, CPUs often get bogged down managing these I/O-intensive operations, starving GPUs of data or coordination. Offloading these to DPUs frees CPU cycles for preprocessing or orchestration and ensures GPUs receive data faster, reducing bottlenecks.
* GPU Focus: GPUs (e.g., A100) excel at AI compute (e.g., matrix operations). By keeping them focused on training/inference-unhindered by CPU delays-utilization improves. For example, faster network transfers via DPU-managed RDMA speed up multi-GPU synchronization (via NCCL).
* System Impact: This##(division of labor) leverages each component's strength: DPUshandle infrastructure, CPUs manage logic, and GPUs compute, eliminating contention during peak loads.
Why not the other options?
* A (Redistribute to DPUs): DPUs aren't designed for general AI compute, lacking the parallel cores of GPUs-inefficient and impractical.
* B (DPUs process models): DPUs can't run full AI models effectively; they're not compute-focused like GPUs.
* D (Memory management to DPUs): Memory management is a GPU-internal task (e.g., CUDA allocations); DPUs can't directly control it.
NVIDIA's DPU-GPU integration optimizes data center efficiency (C).
NEW QUESTION # 170
Your AI infrastructure team is observing out-of-memory (OOM) errors during the execution of large deep learning models on NVIDIA GPUs. To prevent these errors and optimize model performance, which GPU monitoring metric is most critical?
Answer: B
Explanation:
GPU Memory Usage is the most critical metric to monitor to prevent out-of-memory (OOM) errors and optimize performance for large deep learning models on NVIDIA GPUs. OOM errors occur when a model's memory requirements (e.g., weights, activations) exceed the GPU's available memory (e.g., 40GB on A100).
Monitoring memory usage with tools like NVIDIA DCGM helps identify when limits are approached, enabling adjustments like reducing batch size or enabling mixed precision, as emphasized in NVIDIA's
"DCGM User Guide" and "AI Infrastructure and Operations Fundamentals."
Core utilization (B) tracks compute load, not memory. Power usage (C) relates to efficiency, not OOM. PCIe bandwidth (D) affects data transfer, not memory capacity. Memory usage is NVIDIA's key metric for OOM prevention.
NEW QUESTION # 171
You are optimizing an AI data center that uses NVIDIA GPUs for energy efficiency. Which of the following practices would most effectively reduce energy consumption while maintaining performance?
Answer: C
Explanation:
Enabling NVIDIA's Adaptive Power Management features (B) is the most effective practice to reduce energy consumption while maintaining performance. NVIDIA GPUs, such as the A100, support power management capabilities that dynamically adjust power usage based on workload demands. Features like Multi-Instance GPU (MIG) and power capping allow the GPU to scale clock speeds and voltage efficiently, minimizing energy waste during low-utilization periods without sacrificing performance for AI tasks. This is managed via tools like NVIDIA System Management Interface (nvidia-smi).
* Disabling power capping(A) allows GPUs to consume maximum power continuously, increasing energy use unnecessarily.
* Running GPUs at maximum clock speeds(C) boosts performance but significantly raises power consumption, countering efficiency goals.
* Utilizing older GPUs(D) may lower power draw but reduces performance and efficiency due to outdated architecture (e.g., less efficient FLOPS/watt).
NVIDIA's documentation emphasizes Adaptive Power Management for energy-efficient AI data centers (B).
NEW QUESTION # 172
You are tasked with transforming a traditional data center into an AI-optimized data center using NVIDIA DPUs (Data Processing Units). One of your goals is to offload network and storage processing tasks from the CPU to the DPU to enhance performance and reduce latency. Which scenario best illustrates the advantage of using DPUs in this transformation?
Answer: C
Explanation:
Using DPUs to handle network traffic encryption and decryption, freeing up CPU resources for AI workloads, best illustrates the advantage of NVIDIA DPUs (e.g., BlueField) in an AI-optimizeddata center. DPUs are specialized processors designed to offload networking, storage, and security tasks (e.g., encryption, RDMA) from CPUs, reducing latency and improving overall system performance. This allows CPUs and GPUs to focus on compute-intensive AI tasks like training and inference, as outlined in NVIDIA's "BlueField DPU Documentation" and "AI Infrastructure for Enterprise" resources.
Offloading training to DPUs (B) is incorrect, as DPUs are not designed for AI computation. Parallel preprocessing with CPUs (C) misaligns with DPU capabilities. GPU memory management (D) remains a GPU function, not a DPU task. NVIDIA emphasizes DPUs for network/storage offload, making (A) the best scenario.
NEW QUESTION # 173
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