DS41RT v12

DS41RT v12

V12 serves stochastic target-token sampling on the GPU for ordinary and constrained decoding. The public controls remain temperature, top_p, top_k, min_p, and deterministic seed. Greedy, min-p, top-k, and nucleus paths are qualified on the official deepseek-ai/DeepSeek-V4.1-Flash checkpoint (dba1be0a40aa45a94ad051997016db3960a90277).

Image	Architecture	Registry manifest digest
ghcr.io/tpurtell/ds41rt-coordinator:v12	amd64	sha256:ea80ce9f313d9e708d34007cc21d4cc2c09b051936e94905fa6f7b7a19cd6814
ghcr.io/tpurtell/ds41rt-spark-expert:v12	arm64	sha256:d28bd3fe888e691378e85a88a9b2af1292ec6c4b6b2c7cb3ca89d3d50e6bec71

latest resolves to the same pair. Immutable image build source: b23a13011020286d5e1f9d7477c6f6c71ab637cc. The annotated tag's checkout adds measurements, documentation and promoted defaults; it is not claimed byte-identical to the image source.

The 1 RTX + 4 Spark dSpark campaign passed its validator on all 15 raw reports. Weighted medians of three interleaved repeats, in observed decode tokens/s:

Mode	v12	v11 paired output
Greedy	94.17	95.46
T0.2, top-p 0.95	89.65	80.58
T0.7, top-p 0.9	89.73	83.29
T0.7, min-p 0.05	90.91	88.99
T0.7, top-k 40	89.64	87.74

All 150 paired request bodies, response hashes and completion-token counts match the v11 final campaign. The live five-vector sampling qualifier passed 92 checks with zero failures, including constrained JSON and strict tool calls. The native sampler selftest passed 401 cases and 43,648 assertions. Synthetic seeded CPU/GPU floating-point residuals are measured per cell in the performance report; they are not hidden as bitwise parity.

v12-evidence.tar.gz (SHA-256 ace298b38b684e84d332e0c29f5d85a02e1c72b745c16fb737d89b50e3b9c29b) includes the raw campaigns, qualifiers, profiler results, build/image checks and publication records. SHA256SUMS verifies its 104 payload files; v12-release-assets.sha256 verifies the tarball and payload manifest. Full provenance and limitations are in the release notes.