... That makes it sound like the implementations are not meant for direct long-term use, as folks assume them uncompetitive with tuned GPU versions that show up

... That makes it sound like the implementations are not meant for direct long-term use, as folks assume them uncompetitive with tuned GPU versions that show up in hornet et al, and in practice they will be used when no GPU equiv is available / out of convenience? Likewise, even when used directly, it will be by framework / lib devs, so some sort of hornet-blas? To be clear, the work has been interesting to me for years, so this is purely a practitioner's question as we are not in a position to ship-all-the-things.