フリー問題: In a training node, what is the primary …

フリー問題

Implementing Cisco Data Center AI Infrastructure のフリー問題 5 / 20 問目

問題文

In a training node, what is the primary role of the host CPUs?

To perform the matrix operations of the model, with the accelerators used only for storing the weights between steps, so the core count of the host sets the pace of a step.
To terminate the network connections of the fabric, because accelerator traffic must always be copied into host memory by the CPU before it can leave the node.
To read, decode and transform the data set fast enough that the accelerators are never left waiting for their next batch.
To hold the entire data set in main memory for the duration of the run, on the grounds that a training job cannot read from storage once the first step has started and therefore depends on the host memory as its only source.

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