Unverified50% confidenceFactExact time
ComfyUI执行引擎会对DAG进行拓扑排序，确保每个节点在其所有前驱节点完成计算后才被执行
1
Sources
50%
Confidence
Long-term
Relevance
7/13/2026
First Seen
Sources
UniFlex 11：免费开源Krea 2工作流套件完整解析
redditr/comfyui7/11/2026
Related Claims
Unverified节点图通常表示为有向无环图（DAG），运行时引擎按拓扑排序依次执行各节点的处理逻辑75% similarUnverifiedComfyUI's underlying execution engine implements fine-grained computation graph caching, so that when a node is modified, only the affected downstream nodes are recomputed, while the rest are reused from the VRAM cache.73% similarVerifiedPyTorch's Autograd engine builds a directed acyclic graph (DAG) on the fly during tensor operations, recording the order of computations to enable gradient calculation during backpropagation.70% similarUnverifiedBoth Dify and n8n use directed acyclic graph (DAG) structures at their core to describe task dependencies, while ComfyUI allows cyclic nodes to support iterative optimization workflows.69% similarUnverifiedDify工作流引擎基于有向无环图DAG实现任务编排，每个节点代表一个原子操作，支持条件分支、并行执行和循环迭代68% similar
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