LAB 158 / SCAN HIERARCHY

Scale the hierarchy.

A 65,536-element sparse field becomes a dense GPU list through three levels of workgroup scans, higher-level offset propagation, and indirect dispatch.

—Preparing

Studying recursive scan composition.

LIVE PARAMETERS

Shape the sparse field

Time scale 1.00 Activity threshold 0.52 Motion field 0.42 Pause marking and scan

The topology is explicit: 1,024 level-0 blocks feed 16 level-1 blocks, then one root total. Higher-level offsets are added back to level-0 block offsets before stable scatter.

Source elements—

Active list—

Dispatch—

Compute passes—

Draw calls—

Tracked storage—

The route will identify the active backend and scan hierarchy.

Benchmark: not run

GPU count readback: not requested

RUNTIME ERROR

Scale the hierarchy.

Shape the sparse field

The multi-level scan could not start.