Blackwell's weaker FP64 performance could give the House of Zen's Instinct accelerators a leg up in future efficiency benchmarks
Nvidia's accelerators are among the most power hungry machines in their class, yet the chips continue to dominate the Green500 ranking of the most sustainable supercomputers in the world.The parts, which meld a 72-core Grace CPU based on Arm's Neoverse V2 design and 480 GB of LPDDR5x memory with an H100 GPU with 96 to 144 GB of HBM3 or HBM3e memory, have become quite popular in the HPC community.
The two systems are nearly identical, having been built using Eviden's BullSequana XH3000 platform and employing the same GH200 accelerators. Nvidia's GH200 also claims position four, six, and seven on the list with the Isambard-AI Phase 1 , Jupiter Exascale Transition Instrument , and Helios GPU . So while Nvidia enjoys high positions on the Green500 today, AMD isn't out of the game just yet. In fact, the House of Zen's MI300A accelerated processing unit claimed the number three spot on the latest list with the Adastra 2 system.a little under a year ago and fuses 24-CPU cores and six CDNA-3 GPU dies into a single APU with up to 128 GB of HBM3 memory on board, and a configurable TDP of 550-760 watts. And, at least on paper, the part already boasts 1.
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