Not really. Phi never had a very large market in reality, and at the time it existed there were very few non-niche workloads it was actually cost effective at.

Not really. Phi never had a very large market in reality, and at the time it existed there were very few non-niche workloads it was actually cost effective at. Intel was also on top at the time so they could afford to experiment there; now they're actually chasing an existing market that is growing. Phi looked really cool but existing software (a major selling point!) couldn't meaningfully be run without very poor performance and it was difficult to program. To the extent its design decisions made sense or were useful, they were absorbed into other product lines (e.g. Xeon MAX now has an HBM on die as an option, most Xeons just began scaling up their core count while keeping a better core uarch, etc...) But Intel has been doing GPUs for a very long time however and it doesn't realistically seem like they are going to stop anytime soon. Discrete-class and Datacenter class GPUs are new for them, but hyperscaler space is a place that's staying hot and one they're familiar with. Nvidia literally can't sell H100s fast enough. So, I suspect they'll probably remain in the "GPU accelerator" race for quite a while yet, actually.