Home/whitepapers/ AES8001 400G AI Data Center Switch NCCL Benchmark: Up to 98.4% Ideal Busbw over RoCEv2

AES8001 400G AI Data Center Switch NCCL Benchmark: Up to 98.4% Ideal Busbw over RoCEv2

AES8001 NCCL Benchmark Report

October 6, 2026

400G SwitchNCCL BenchmarkRoCEv2AI NetworkingPFC & ECN

Executive Summary

We tested AurCore's 32x400G AES8001 with NCCL AllReduce and All-to-All on RoCEv2 across 1:1 to 4:1 leaf-spine oversubscription. Up to 98.37% ideal bus bandwidth, with PFC/ECN configs included.

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