Gt200b fp64 performance3/19/2023 ![]() ![]() Power10 could easily support the NVLink 3.0 protocol over its “BlueLink” OpenCAPI 3.0 interfaces, but doesn’t. (Both machines were fully installed in 2018.) The Power9 and the V100 chips all had NVLink 2.0 ports and therefore memory could be coherent across the two CPUs and four or six GPUs in the nodes of these supercomputers.įor whatever reason, Power10 does not support NVLink 3.0 – probably as a consequence of losing the bids with Nvidia for the follow-on “Frontier” 1.5 exaflops system at Oak Ridge and “El Capitan” 2 exaflops system at Lawrence Livermore. This was the winning combination between the IBM “Cumulus” Power9 processor and the Nvidia “Volta” V100 GPU accelerator that resulted in these chips being the foundation of the 200 petaflops “Summit” supercomputer at Oak Ridge National Laboratories and the 125 petaflops “Sierra” supercomputer at Lawrence Livermore National Laboratories. ![]() The Infinity Fabric coherent memory gets the HPC and AI programmers on board because it simplifies and automates the memory management between the large memory space on the CPU and the fast memory space on the GPUs attached to it. If you want to know how and why AMD motors have been chosen for so many of the pre-exascale and exascale HPC and AI systems, despite the dominance of Intel in CPUs and the dominance of Nvidia in GPUs, you need look no further for an answer than the new “Aldebaran” Instinct MI200 GPU accelerator from AMD and its Infinity Fabric 3.0 coherent interconnect that is being also added to selected Epyc CPUs. ![]()
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