NCP-AII 試験問題を無料オンラインアクセス

You are a network administrator responsible for configuring an East-West (E/W) Spectrum-X fabric using SuperNIC. The Bluefield 3 devices in your network should be a set to NIC mode with RoCE enabled to optimize data flow between servers. You have access to the Spectrum-X management tools and the necessary documentation. You need to use specific configuration commands to achieve this setup. Which of the following steps and commands are necessary to configure the Bluefield 3 devices in NIC mode for the E/W Spectrum-xX fabric using SuperNIC?
(Choose two.)

• A.Use the command sudo mixconfig -d /dev/mst/<device> set LINK_TYPE_P1=2 to enable Ethernet on the Bluefield 3 devices.
• B.Use the command sudo mixconfig -d /dev/mst/<device> set
  INTERNAL_CPU_OFFLOAD_ENGINE=1 to configure the SuperNIC to operate in NIC mode.
• C.Use the command sudo mixconfig -d /dev/mst/<device> set DPU_MODE=1 to set up the Bluefield
  3 devices in DPU (Data Processing Unit) mode.
• D.Use the command sudo mixconfig -d /dev/mst/<device> set DISABLE_SPECTRUM_X=1 to reduce overhead.

An engineer needs to verify NVLink isolation on a single node with 8 GPUs. Which NCCL test configuration stresses switch bisection bandwidth?

• A.Use all_reduce_perf -b 8 -e 16G -f2 -g 8 with NCCL_TESTS_SPLIT= "AND 0x1"
• B.Use all_reduce_perf -b 8 -e 16G -f2 -g 8 without splits
• C.Use NCCL_TESTS_SPLIT= "DIV 8" with point-to-point tests
• D.Use reduce_scatter_pref -b 8 -e 16G -f2 -g 4

A user wants to restrict a Docker container to use only GPUs 0 and 2. Which command achieves this?

• A.docker run -gpus "device=0.2" nvidia/cuda:12.1-base nvidia-smi
• B.docker run -gpus all nvidia/cuda:12.1-base nvidia-smi -id=0,2
• C.docker run -e NVIDIA_VISIBLE_DEVICES=0.2 nvidia/cuda:12.1-base nvidia-smi
• D.docker run -device /dev/nvidia0./dev/nvidia2 nvidia/cuda:12.1-base nvidia-smi

After ClusterKit reports "GPU-Host latency exceeds threshold", which NVIDIA diagnostic tool should be used to isolate hardware faults?

• A.Re-run ClusterKit with --stress=gpu -Y 60 to extend test duration
• B.nvidia-smi topo -m to inspect GPU topology connections
• C.DCGM Diags dcgmi diag -r 2
• D.ib_write_bw to measure InfiniBand bandwidth between nodes

To validate bisectional bandwidth across two racks in a Spectrum-X Ethernet fabric, which NCCL test configuration isolates East-West traffic?

• A.Run without splits and analyze per-rack averages
• B.NCCL_TESTS_SPLIT= "OR 0x7" ./all_reduce_perf -g 8
• C.NCCL_TESTS_SPLIT= "DIV 8" ./all_reduce_perf -g 1
• D.NCCL_TESTS_SPLIT= "MOD 2" ./all_reduce_perf -g 8