Can I run altar-1 on a Mac with 512 GB?

Yes, just

Its published weights (328 GB) fit in the 384 GB a Mac with 512 GB can use, with room for ≈ 609K tokens of context.

Full analysis of altar-1 Everything that runs on Mac with 512 GB Get the weights on Hugging Face

hf download AikidoSec/altar-1

Files and context on Mac with 512 GB

Each file of altar-1 (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.

File	Size	On Mac with 512 GB	Context (16-bit)	Context (8-bit)
As published	328 GB	Tight	609K	1M
4-bit (estimate)	282 GB	Fits	1M	1M

altar-1 on other hardware

NVIDIA H100No
RTX 5090No
RTX 4090No
RTX 3090No
RTX 5060 Ti 16 GBNo
RTX 3060 12 GBNo
RTX 4060No
Mac with 32 GBNo
Mac with 64 GBNo
Mac with 128 GBNo
Mac with 512 GBYes, just

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Assumes 75% of the Mac's memory is usable (macOS's default limit for the GPU; it can be raised) 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.