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73 lines
1.7 KiB
Text
73 lines
1.7 KiB
Text
created: 20260511000000000
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modified: 20260511000000000
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tags: ResearchStack NUVMAP GPU WebGPU Shader MetadataBlitter SIMD HOLD
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title: NUVMAP Metadata Blitter
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type: text/vnd.tiddlywiki
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! NUVMAP Metadata Blitter
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Status: `SHADER_PRIMITIVE_WITH_HOLD_BOUNDARIES`
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The NUVMAP metadata blitter is a small WebGPU compute shader that treats the GPU
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as a dataport fabric for metadata sorting.
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Runner:
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```text
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5-Applications/scripts/nuvmap_metadata_blitter.wgsl
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```
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Documentation:
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```text
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5-Applications/scripts/nuvmap_metadata_blitter.md
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```
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!! Purpose
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```text
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metadata shard
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-> fixed-size word windows
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-> SIMD-wide blitter pass
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-> sortable route keys
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-> packed metric words
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-> radix grouping
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-> waveprobe / metaprobe selection
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-> NUVMAP receipts
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```
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The shader does not sort by itself. It emits deterministic keys and metrics that
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a later radix/sort pass or CPU verifier can consume.
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!! Key Word
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```text
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bits 31..24 hash8 phase seed
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bits 23..17 density7 byte pressure
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bits 16..10 delta7 shock / torsion gradient
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bits 9..4 zero6 void / low-information throat
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bits 3..0 flags4 boundary condition
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```
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!! Dispatch Shape
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```text
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@compute @workgroup_size(256, 1, 1)
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dispatch = ceil(record_count / 256)
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```
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Each invocation scans at most `64` words. Larger records should be split into
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fixed windows so the kernel remains predictable and shardable.
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!! Claim Boundary
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This shader emits route keys and metrics only. It does not decompress, classify
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semantic meaning, publish data on-chain, claim GPU acceleration, or claim
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compression improvement. GPU claims require CPU/GPU parity receipts.
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Related:
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* [[Hyper-Soliton Radix Bins]]
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* [[NUVMAP Chain Protocol Plan]]
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* [[Blockchain L3 Self-Scan Scheduler]]
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* [[NUVMAP GPU Burst Check Plan]]
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