Can I run K2-Horizon-7B-Uno on an NVIDIA H100?

Yes

Its published weights (1.40 GB) fit in the 72.0 GB an NVIDIA H100 can use, with room for an unknown amount of context.

hf download IFM/K2-Horizon-7B-Uno

Files and context on NVIDIA H100

Each file of K2-Horizon-7B-Uno (and of GGUF versions the site has analyzed), and how much context fits next to it, with the context cache in 16-bit or 8-bit.

K2-Horizon-7B-Uno on other hardware

Popular models that run on NVIDIA H100

Assumes 90% of the card's memory is usable and at least 4K tokens of context for one conversation, with the context cache in 16-bit unless noted. Fits leaves at least 20% of that memory for context; Tight leaves less.