Running stacked (virtual) cluster of a DGX Spark and a Jetson Thor via QSFP

Meanwhile a DGX Spark joined my Jetson Thor. As the Thor has a very similar architecture, (GB5, also 128 GB unified RAM and also a QSFP port), I could imagine, that running them together as a stack should be possible as well.

Anyone who already tried this?
Any recommendation for a cable? 200GbE cables seem to be hard to find here in Germany. Is it really required? (The Thor DevKit specs say, it has 1x QSFP28 (4x 25 GbE)).

Hi,

The ASUS QSFP Cable GX10 0.4m 400G QSFP112 DAC Kabel für Ascent GX10 90MA0000-P01000 is available in Germany.

I bought mine at Jacob.