NVIDIA Updated NCA-AIIO Exam Questions and Answers by dalia

MIG, or Multi-Instance GPU, is the NVIDIA technology that partitions one supported GPU into multiple isolated GPU instances. NVIDIA’s MIG User Guide states: “The Multi-Instance GPU (MIG) User Guide explains how to partition supported NVIDIA GPUs into multiple isolated instances, each with dedicated compute and memory resources.” It also explains that MIG enables efficient GPU utilization across multiple users or workloads with guaranteed performance.

NVIDIA AI Enterprise documentation also defines MIG as hardware-level GPU partitioning into isolated instances, each with dedicated resources. Therefore, the correct answer is MIG.

Why the other options are incorrect: vGPU virtualizes GPU access for virtual machines, but the specific technology for partitioning a single physical GPU into isolated GPU instances is MIG. NVLink is a high-speed GPU interconnect. NCCL is a communication library for multi-GPU and multi-node collective communication.

The correct answer is B because out-of-memory issues in shared AI clusters are typically addressed through workload resource management, reservations, and monitoring. NVIDIA Run:ai documentation states that workload management includes “Workload scheduling” to “prioritize and allocate GPUs based on workload needs” and “Monitoring and insights” to “track real-time and historical data on GPU usage to help track resource consumption and optimize costs.” It also says NVIDIA Run:ai supports “Fractional GPU usage” so users can “request and utilize only a fraction of a GPU’s memory, ensuring efficient resource allocation and leaving room for other workloads.”

This directly supports option B: resource reservation and usage monitoring in the workload manager. Containers do not “boost” physical GPU memory, and simply increasing node count automatically does not correct the root cause if jobs are not requesting, reserving, or being monitored for the correct memory usage.

NVIDIA states that the NVIDIA GPU Operator “simplifies deployment of NVIDIA AI Enterprise by automating management of all NVIDIA software components needed to provision GPUs in Kubernetes.” NVIDIA documentation also explains that the GPU Operator “uses the operator framework within Kubernetes to automate the management of all NVIDIA software components needed to provision GPU,” including NVIDIA drivers, the Kubernetes device plugin for GPUs, NVIDIA Container Runtime, automatic node labeling, DCGM-based monitoring, and more.

Therefore, the primary benefit is that it simplifies management and deployment of NVIDIA GPU software components in Kubernetes environments. It does not automatically update Kubernetes itself, increase CPU processing power, or by itself provide full application-demand-based autoscaling.

GPUDirect RDMA is used in multi-server GPU workloads to enable a direct peer-to-peer data path between GPU memory and NVIDIA networking devices. NVIDIA states that GPUDirect RDMA provides “a direct P2P data path” between GPU memory and NVIDIA host networking devices, which reduces GPU-to-GPU communication latency and “completely offloads the CPU.”

This means the direct benefit is that CPU involvement in GPU-to-GPU network communication is removed or greatly reduced. The option “Offloads data movement from CPUs” is therefore correct. NVIDIA’s GPUDirect page also explains that network adapters and storage drives can directly read and write GPU memory, “eliminating unnecessary memory copies,” decreasing CPU overhead, and reducing latency.

Why the other options are incorrect: GPUDirect RDMA does not raise GPU memory clock speeds, does not primarily act as a CPU scheduling feature, and does not compress transferred data. Its purpose is direct data movement between GPU memory and network/storage devices to reduce latency, reduce unnecessary copies, and lower CPU overhead.