NVIDIA / NVIDIA/Model-Optimizer
Puzzletron OOM during step 6 (one-block scoring) for Qwen 3.5-2B VLM
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@danielkorzekwa is already working on this.
Since Jun 21, 2026.
bug
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Description
branch: dkorzekwa/claude_qwen35
Environment: 2× H100 80GB, Puzzletron full pipeline, nproc_per_node=2
Model: Qwen3.5-2B (model_type: qwen3_5, a VLM with nested text_config)
Failure: torch.OutOfMemoryError on GPU 1 during step 6 ("calculating one block scores"), with ~74 GiB consumed out of 80 GiB.
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