Process Flow in Layer-wise Model Parallelism

Example of Model Parallelism with a Transformer Decoder

Worker Idle Time in Layer-wise Model Parallelism

An engineer is tasked with training a very large neural network composed of 24 sequential layers. The model is too large to fit into the memory of a single processing device. To solve this, the engineer decides to distribute the model across 4 identical devices by partitioning it based on its layers. Which of the following strategies correctly applies this layer-based distribution method?

Analyzing Efficiency in a Distributed Model

Consider a large neural network with 12 sequential layers that needs to be distributed across 3 processing devices because it is too large for a single device. An engineer proposes the following distribution: Device 1 runs layers 1, 4, 7, 10; Device 2 runs layers 2, 5, 8, 11; and Device 3 runs layers 3, 6, 9, 12. This proposed method represents a correct implementation of a layer-based partitioning strategy where groups of consecutive layers are assigned to different devices.