FA-99243 / Distributed training aggregation / Member archive
Replica gradients ignore local sample counts · case 03
Replica gradients ignore local sample counts.
Case contract
Given [gradient_mean, example_count] rows, return the elementwise global example mean; zero-count rows contribute nothing and total zero returns [].
Why this case matters
A toy distributed-training contract makes replica and shard contribution rules explicit without claiming framework compatibility or performance.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| unequal batch sizes | [6.0, 9.0] | [7.5, 10.5] | Failed |
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