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@@ -880,3 +880,31 @@ The r27 build has NO context tarballs:
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(idempotent, skips patterns that moved upstream).
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- Legacy: r12/r18 build dirs are staging-era, not rebuildable (tarballs
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were context-only artifacts). Cleanup candidate once r27 qualifies.
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+
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+## Night 2 results (2026-09-06→07, tool 2.6.1.dev46, seed 42, hardmode)
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+
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+Operator switched the agent back to pluto → dgx1–4 all free; dual-bench window.
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+
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+- **aiden production-1.2 (2x, first canonical aiden number ever): 159/176 (90)**.
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+ DFlash2 k=7, fp8_e4m3 KV 4 GiB pin (461K-token pool), eager, LibertAIDAI NVFP4
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+ 97 GiB/node. Spec acceptance 4.27–4.94 (healthy). Fails: TC-43/58/61.
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+ Profile vs the r18-spark anchor (158): +1 quality, −32% prefill (1,271 vs 1,861
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+ pp c1), ~23 t/s decode, 1.8 s TTFT, 5x less KV headroom. The drafter lane is
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+ alive in aiden's stack — the r18-fork C4-page assert is fork-specific.
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+ Report: `recipes/glm53-flash-aiden-2x/reports/2026-09-06_aiden-12-2x-hardmode.*`.
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+- **r27 lane (2x spark, nvfp4 KV, KV 2,206,618): 156/176 (88) = −2 vs r18**
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+ on the identical 2x config. r27 prefill ~27% slower (1,356 vs 1,861), decode
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+ in line (31.4 vs 36.0 tg c2). The r27 tree has NOT beaten the r18 build on
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+ quality yet; its high-value cells (DFlash2 env-driven spec, DCP4, 16 GiB KV)
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+ remain the next windows. Fails: TC-33/43/45/76.
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+ Report: `recipes/glm53-flash-r27-spark/reports/2026-09-06_r27-2x-hardmode.*`.
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+- r27 image arch fix: attempt-3 build lost the stage-inherited
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+ TORCH_CUDA_ARCH_LIST=12.1a (buildkit has no GPU; torch autodetect unavailable)
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+ → sm120-only kernels → cudaErrorNoKernelImageForDevice at boot. Attempt 4
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+ declares `ENV TORCH_CUDA_ARCH_LIST=12.1a GIT_PROTOCOL=0` in vllm-builder
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+ explicitly; clean boot + full bench since.
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+
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+Ops: old `r18-2x-nvfp4kv` containers (left over from the night-1 matrix, up
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+~1 h on dgx1/2) stopped; 2nodes-dac and ds4 now hold the new lanes.
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+Next queue: prod-3.73-vision (DSV4F-Vision aiden lane) on 2nodes-dac, then
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+r27 DFlash2 + DCP4-16G re-tests (need 4x → operator sign-off on the lane swap).
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