FA-99189 / Checkpoint tensor mapping / Member archive

Checkpoint mapping: shard sizes are added along the wrong axis · case 04

shard sizes are added along the wrong axis.

Member previewVariant 4 · 3 implementations · 6 checks per implementation

Case contract

Shapes have rank at least one and nonnegative extents. Return the concatenated shape when dimensions agree off axis; invalid axis or incompatible shapes return [].

Why this case matters

A bounded offline model of checkpoint tensor bookkeeping in a training workflow.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
axis one	`[6, 2]`	`[3, 5]`	Failed

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