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Life of an AI Job in Fabric

End-to-end animated walk-through of a training job moving through the fabric — from kubectl submission, through gang scheduling, container launch, NCCL rendezvous, Queue Pair setup, memory registration, forward and backward pass, ring AllReduce over RoCEv2, optimizer step, checkpoint, and iteration loop. Twenty-four steps across six phases, all driven by the concepts in the prior sections.