FA-99195 / Checkpoint tensor mapping / Member archive
Checkpoint mapping: row shard offset ignores preceding shard lengths · case 05
row shard offset ignores preceding shard lengths.
Case contract
Return the sum of lengths before a valid shard index; invalid index returns -1.
Why this case matters
A bounded offline model of checkpoint tensor bookkeeping in a training workflow.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| first | 3 | 0 | Failed |
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