FA-99263 / Distributed training aggregation / Member archive
All-gather output follows arrival order · case 03
All-gather output follows arrival order.
Case contract
Given rank-tagged payloads and world size, return payloads in rank order; missing ranks are omitted and duplicate rank uses last listed payload.
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 |
|---|---|---|---|
| arrival shuffled | ["c", "a", "b"] | ["a", "b", "c"] | Failed |
MEMBER ARCHIVE
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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.
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