Last night, in a basement in Florida, one conversation ran across two kinds of silicon…
This is a dev post classified by Jev as Hosting & infra (a tool drop), kept by the Dev Radar because it carries real work, not commentary.
Last night, in a basement in Florida, one conversation ran across two kinds of silicon at once. Two NVIDIA DGX Sparks read the prompt. The finished cache crossed an RDMA link straight into a Mac Studio's memory. Apple silicon wrote the answer. No file in the middle, no re-reading, one model, one thought — GLM-5.3-Flash with ~380,000 tokens of context in view. That hop should not exist. CUDA and Metal were never meant to touch each other's memory. @ashhart built the bridge that makes them: MCDMA — Metal CUDA Direct Memory Access. Kernel-level RDMA on macOS, written by one person, open source.
Posted by Volatile Markets (1.5k followers) 2 h ago · 16 likes · 424 views · view the original post on X. Kept by the Dev Radar as Hosting & infra. Tools mentioned: mcdma.
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