[desertrider12]

That's because Larrabee wasn't totally canceled, it was just pivoted from a gaming GPU to an HPC accelerator in the form of Knights Corner/Landing. The idea of having lots of x86 cores with wide SIMD units didn't change, but it was a lot more successful in the HPC world because anybody could compile an old MPI or OpenMP application with AVX512 and it just worked.

[physicsguy]

To some degree, but the first cards didn’t really give great performance in practice. By the third gen they were worth it and then Intel cancelled it.

[pclmulqdq]

Larrabee itself was a complete disaster. Xeon Phi resurrected the Larrabee trash heap into something sellable. Sadly, it was never really that easy to program a Xeon Phi.