How does NV suggest we test the QSFP of the Thor Dev Kit?
Does NV have any tested models of QSFP28 optical transceivers?
This works for me on Thor with Jetpack 7.1 r38.4.
NVIDIA/Mellanox MC2609130-050 Compatible QSFP+ to 4SFP+ Ethernet Passive Breakout Copper Cable
qsfp+ end of cable into Thor.
Two sfp+ into Lattice LF-SNSR-ETH-EVN holoscan-sensor-bridge
One sfp+ into QNAP QSW-2104-2S-A 10GB switch, to LAN, WAN.
One sfp+ into x86_64 workstation.
For functional testing, note that setting a static IP helps: QSFP Port validation on Thor Devkit - #13 by WayneWWW . The Jetson Thor Series Modules I/O Verification Guide has the procedure to enable PRBS pattern generation and tune TX parameters in section 2.4. From the note in that section:
In addition to electrical measurements, functional Ethernet testing is also recommended. Verify that end-to-end Ethernet communication operates without errors across multiple systems and under various operating conditions.
There is a list of networking interconnects here: Networking Interconnect - NVIDIA Docs
I am checking with the team to confirm which parts were verified with Jetson Thor.
These have been validated:
- MCP1600-E001E30 ( MCP1600-E0xxEyy 100Gb/s QSFP28 DAC Cable Product Specifications - NVIDIA Docs )
- 6COM 6C-QSFP±SR4
v1.4 of the Jetson Thor Series Supported Component List released today includes these part numbers.