I don't understand why megakernels haven't become the default choice. The speed advantage is crazy. I made a few changes to the openjet megakernel to run in a dual gpu (older gen, not blackwell) box and doubled my token generation speed on qwen3.8-27B (4-bit though).

I keep debating adding a third matching gpu to see if I can push the speed a bit more and move back to the 8-bit quant, but I'm stuck on the idea of just building a Blackwell gpu system despite the cost factor. Plus a third gpu is going to going to be weird for the tensor split and P2P data syncs and my workstation is old with 3rd gen PCIe etc etc.