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For TXI (2Mpx 5kHz) based on the epixhremu study from ric/stefano/valerio/mikhail/mona it feels like there is a good chance we can do it on 20 nodes with CPU (each with ~50 cores).  The XPP detector has 10x that data volume, and 200 nodes feels too difficult.  My best guess is that

Proposed Goal: we should try to target GPUs for this to reduce the node count (ideally to 24 nodes, each of which would take 1 LR4 multi-color fiber).  This is ~8GB/s into each node which is difficult with KCU1500 in our existing nodes, but will hopefully be doable in time for XPP.

If using 1 LR4 fiber per node isn't doable (i.e. we need more nodes) we should still use LR4 to reduce fiber using -count in the BOS and use a SM-MM box in SRCF to split out the LR4 into more PLR4 fibers.

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