InfiniBand is a proven networking technology for HPC and AI clusters. Which of these are recognized advantages that make InfiniBand suitable for these demanding workloads?
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Short Explanation
You want InfiniBand for HPC and AI because it gives you low latency, high reliability, CPU offloads, and high bandwidth. High latency hurts performance, and InfiniBand is lossless by design, so dropping packets is never one of its selling points.
Full Explanation
InfiniBand's advantages for HPC and AI are well-established. Low latency, measured in single-digit microseconds, is critical for distributed training synchronization. High reliability means your interconnect doesn't lose or corrupt data. CPU offloads, via RDMA, mean the network adapter handles data transfers autonomously, freeing the CPU for application work. High bandwidth, 100–400 Gbps depending on generation, supports large inter-GPU data exchanges. The high-latency statement is false because high latency is detrimental, not an advantage. The lossy-delivery statement is false because InfiniBand uses credit-based flow control, so a sender transmits only when the receiver has advertised buffer space, and the fabric is designed not to drop packets under congestion. The question tests your understanding of InfiniBand's value proposition and weeds out misconceptions.