SiPearl has clarified the specifications of its Rhea1 server Arm processors, which will be used, in particular, as part of the first European exaflop supercomputer, JUPITER, although the main chips in this system will still be the hybrid accelerators NVIDIA GH200. At the same time, SiPearl has once again pushed back the release dates for Rhea1 — initially, the first samples were expected to be presented in 2022, but now the company is talking about 2025. The design of the processors has not significantly changed. They will feature 80 Arm Neoverse V1 (Zeus) cores, introduced in the spring of 2020. Each core is equipped with two SVE-256 SIMD blocks, which support, among other things, operation with BF16. The LLC size is 160 MB. The internal bus used is Neoverse CMN-700. For external communication, there are 104 PCIe 5.0 lanes: six x16 and two x4. There is no direct mention of support for multi-chip configurations.
Source: 3dnews.ru
