fix: single-searcher MNIST example runs for multiple epochs #9160
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When this searcher is run for a single epoch it doesn't get a chance to report progress before the entire experiment is complete. This means that the progress bar in the web jumps from 0 to 100 in a step change.
The step-change makes it look like something is broken. This eliminates that (by switching the searcher to step on batches) and demonstrates that the progress bar is working.
MLG-1522
Ticket
Description
Test Plan
Run a single-searcher experiment using
examples/tutorials/mnist_pytorch/const.yaml
as config. Watch that the progress bar in the web UI goes through intermediate steps as the experiment runs (that it doesn't jump directly from 0% complete to 100%).Checklist
docs/release-notes/
.See Release Note for details.