SpaceX is developing Kessel, a custom Vera Rubin NVL72 rack that replaces internal NVLink cable cartridges with a passive PCB midplane. It keeps Oberon’s 72 GPU packages, 18 compute trays and 9 switch trays, but rearranges them back-to-back around the board. Think mini Kyber, with a smaller scale-up domain and a design intended for both terrestrial and orbital deployment. The question is whether this smaller version can make the midplane practical. (1/4)🧵
SpaceX develops Kessel, a Vera Rubin NVL72 rack with a passive midplane
AISpaceX is developing Kessel, a custom Vera Rubin NVL72 rack that replaces internal NVLink cable cartridges with a passive PCB midplane. It keeps Oberon's 72 GPU packages, 18 compute trays and 9 switch trays, rearranged back-to-back around the board, with a smaller scale-up domain than Kyber.
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Original title: SpaceX is developing Kessel, a custom Vera Rubin NVL72 rack that replaces internal NVLink cable cartridges with a passive PCB midplane. I...