tp on a llama.cpp profile was a width nothing placed. gpus_per_node is
now the count: placement reserves that many cards on one node and the
engine splits layers across them. tp, pp and nodes are refused with
what to write instead.
Refs #2 (item 8).
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>