Unverified50% confidenceBenchmarkExact time
Megatron-LM实验数据表明，NVLink互联下8卡张量并行可达7.5×以上线性加速，而PCIe 3.0 x16环境下7B模型通常仅达2.5-3×，超过4卡后通信开销完全抵消额外算力
1
Sources
50%
Confidence
Long-term
Relevance
7/22/2026
First Seen
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