We ported ThunderKittens to NVIDIA’s Vera Rubin NVL72 and rebuilt our NVFP4 GEMM around the new hardware, taking it from 42% of roofline to over 22 PFLOPS — competitive with cuBLAS and CuTe DSL. Here is what changed in the ISA and how we used it.
To Infinity and Beyond: ThunderKittens Now on NVIDIA Vera Rubin NVL72!
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September 10, 2026
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