Apple UC send into a queue pair with no posted receive kills that direction
Parent: Mac local LLMs: Clusters, RDMA, exo and ds4 · Published reference · snapshot 2026-10-05
↓ Facts as markdownall context files
Already covered in full; nothing absent or contradicting was found.
These notes link each claim to its source. A source may be a research report hosted on this site rather than the primary document. A published reference means the content is available; it does not certify independent review or accuracy.Read the editorial policy and follow the sources before relying on a claim.
Facts
- Already covered in full; nothing absent or contradicting was found. [source]
- See uc-queue-pair-one-direction-drop-warm-up-check.md (the ds4 posted-receive barrier and `DS4_TP_FRAME_RDMA_POSTED`). [source]
- No further history found in the cached MLX, exo or JACCL pages. [source]
- None beyond the existing dossier. [source]
- None. [source]
- Whether JACCL has any equivalent of the posted-receive barrier is already recorded as an open claim in the existing dossier. [source]
- ALREADY COVERED: ~/.research/expert/running-llm-models-locally-on-mac/dossiers/uc-queue-pair-one-direction-drop-warm-up-check.md holds the claim that a UC send into a queue pair with no posted receive kills that direction permanently, the ds4 receives-posted barrier, the 16384-byte warm-up and the retry bounds, and nothing in the cached MLX PR 3899, 3900, 4443, issue 3830, 4192, 4319 or exo 1390 pages adds to or contradicts it. [source]
Children
- No children recorded.