AMD and SiPearl Team Up for Arm-Based Exascale Supercomputers

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SiPearl, a French company that designs Arm-based processors for supercomputers, on Monday teamed up [PDF] with AMD to provide a joint offering for exascale supercomputers. Under the terms of the deal, SiPearl will provide its Rhea processors, while AMD will offer its Instinct compute GPUs.

The collaboration between the two companies will include building software that will be compatible with Arm-based Rhea processors, as well as "assess[ing] the interoperability" of AMD's ROCm open software with the SiPearl Rhea CPU. AMD's ROCm is an open platform close-to-metal software stack for GPUs. Apparently, SiPearl would like to use it to program its CPUs as well. Keep in mind that HPC software for Arm is in its infancy. So perhaps making AMD's ROCm and programs that use it compatible with Rhea makes sense from a time-to-market perspective.

SiPearl's Rhea system-on-chip (SoC) for high-performance computing (HPC) applications packs 72 Arm Neoverse Zeus cores, interconnected using a mesh network. It also features a unique memory subsystem comprising of four HBM2E memory stacks and four or six regular DDR5 memory channels. With a memory subsystem like this, Rhea will be able to benefit from the extreme bandwidth enabled by HBM2E memory, as well as the high memory capacity enabled by DDR5.

While Rhea's CPU promises to offer quite serious performance, it does not look like that alone will be able to power a supercomputer with performance of over one FP64 ExaFLOPS, at least not with reasonable power consumption. Therefore, it makes sense to pair the CPUs with HPC accelerators or compute GPUs like AMD's Instinct MI250X or its successors. SiPearl also implies that AMD's compute GPUs will not be the only choice for supercomputer operators adopting Rhea.

"We welcome this collaboration with AMD that drive innovation in the HPC market for many years," said Philippe Notton, SiPearl’s CEO and founder. "This new collaboration with a global leader will further enrich our joint offering of our HPC microprocessor combined with partner acceleration solutions. Providing a broader choice for European supercomputers end-users, it will enable Europe to tackle the great challenges of our time such as artificial intelligence, climate modeling and medical research."
 

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