SPI Parallel Verify

Use when validating that parallel, shuffled, or split execution yields identical results.

Inputs

• seed, indices, precision
• sources (optional): splitmixternary, xoroshiro3color, gay_mcp

Workflow

1. Compute ordered, reversed, shuffled results.
2. Compute parallel split if available.
3. Compare at fixed precision or via hex.
4. Validate GF(3) per triplet.
5. Emit a deterministic report.

Commands (music-topos)

• just spi-verify
• just spi-gf3-parallel
• ruby -I lib -r splitmixternary -e "require 'json'; puts JSON.prettygenerate(SplitMixTernary.proveoutof_order)"

Acceptance

• ordered == reversed == shuffled
• parallel == sequential
• gf3_ok == true
• avoid float truncation of RNG state

Report fields

• seed, indices, allequal, parallelok, gf3_ok, precision

Example prompt

"Verify SPI and GF(3) for 3-stream triads at seed 0x42D and report determinism."