[BUG] RDMA option is seen on TB4 cluster

[jwang0512]

Describe the bug

tried QWen2.5-31B and GPT-OSS-20B : model failed.

Environment

macOS Version: 26.4.1
EXO Version: 1.0.69

• Hardware:
  • Device 1: Mac Mini M4, 16GB RAM
  • Device 2: Mac Mini M4, 16GB RAM
  • Additional devices:
• Interconnection:
  • Thunderbolt 4 cable between Device 1 and 2

[jakubtomas-cz]

same here

[AlexCheema]

I’m surprised you managed to launch an RDMA instance on M4 Mac Mini with Thunderbolt 4 - RDMA is only supported on Thunderbolt 5 and should not even be accessible without that.