vLLM issue #14452: how to run vLLM on RTX 5080/5090 (139 comments, community build-from-source recipe, FA3 does not work on Blackwell, no official prebuilt wheels)

Open 'Doc' issue turned community support thread. Distinct independent commenters: pavanimajety (maintainer), shahizat, rubertorresbonet, SmileIsThinking, Dayrker, dinhanhx, jayavanth, xycjscs, daanno2, ctdavi, fflyree, Panchovix, kushanam (credited for Blackwell PRs). Engine versions across reports: vLLM 0.7.0-0.7.4+ from source, plus the 25.01/25.02 NGC tritonserver container. Reporter threads contain hardware, driver and version detail; treat every number in the thread as a single self-report unless the record says otherwise.