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deepmind.google·6d ago
AI Engineering
Lobsters·28d ago·5 min read
fastSwan: Nvidia ConnectX-7 by numbers
TL;DR
Benchmarking the Nvidia ConnectX-7 (CX7) NIC in a standalone x86 chassis revealed its performance under the same protocol as the Bluefield-3. A new forwarding model called flower-mode was developed, requiring adaptations to the mlx5 kernel driver.
✦ Why It Matters
Engineers can implement the new flower-mode in their network setups to optimize traffic handling on Nvidia ConnectX-7 NICs.
Key Takeaways
- Benchmark the ConnectX-7 NIC in your own x86 environment.
- Explore tc flower for advanced traffic classification.
- Adapt the mlx5 kernel driver for custom forwarding models.
- Utilize findings to enhance telco edge network deployments.
Full Summary
Nvidia's ConnectX-7 (CX7) NIC was benchmarked in a standalone x86 environment to evaluate its performance compared to the Bluefield-3 DPU. The testing utilized tc flower, a tool for traffic classification, to implement a new forwarding model named flower-mode, which necessitated modifications to the mlx5 kernel driver.
The lab setup mirrored the Bluefield-3's Test 4, with both clear-text and IPsec traffic managed on the same physical interface. Results demonstrated the CX7's capability to efficiently process mixed traffic types, crucial for telecommunications operators.
The findings suggest that the CX7 can effectively support complex network environments, enhancing deployment flexibility. This work contributes to the ongoing development of high-performance networking solutions.