KernelBench cuda · RTX PRO 6000

MegaQwen Decode Qwen 3.8 Max

audit verdict: contamination

The final artifact is genuine raw CUDA rather than a fake or forbidden-DSL solution, and its normal prefill-plus-decode path is structurally close to the reference. Correctness is nevertheless not established for this recovered final source. The only PASS records in the trace precede extensive final CUDA/PTX and L2-policy edits, the controller never ran the harness on the final workspace, and the synthesized result.json explicitly has no check or benchmark result. More importantly, decode_steps ignores its supplied k_caches and v_caches and always operates on model._rt caches, while returning the untouched caller objects. That violates the required stateful decode API for alternate or overwritten caller cache buffers even if the narrow run() path works because prefill returns those same internal cache objects. CUDA graphs are enabled by default and cached by shape/start position, so an isolated same-buffer and graph-hit regrade is mandatory. Independently, the cell is conclusively contaminated: the agent intentionally found another completed same-problem run, read its CUDA-language result, implementation, check, benchmark, and result artifacts, and described them as material to learn from before authoring this solution. publish_grade remains false even if a future empirical correctness run passes.

20260803_214712_or-fable_qwen_qwen3.8-max_03_megaqwen_decode