r/LocalLLaMA
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Enabling P2P mode on dual RTX 3090s; before/after numbers (Qwen3.6-27B INT4, 256k ctx)
Finally got around to testing whether enabling P2P actually matters on a dual 3090 rig (PCIe 4.0 8x/8x), instead of just taking it on faith. Ran 5 benchmark passes before and after with nvbandwidth + a standard decode/soak test script. Worth the 4_5 hours of fiddling if you're running inference daily. Driver version ch