Redazione RHC : 28 September 2025 14:46
After having signed the contract to build the Japanese supercomputer “K,” one of the most powerful in the world, Fujitsu has announced a new flagship project: Post-K , based on the 64-bit ARMv8 architecture. The presentation took place during the International Supercomputing Conference in Frankfurt , Germany, and the official launch is scheduled for 2020.
Post-K is expected to achieve 100 times faster performance than its predecessor , paving the way for a computing level that could exceed 1,000 petaflops (PFLOPS) .
Currently, the “K” supercomputer—also known as “King” —is ranked fifth in the world’s top 500 most powerful systems . Its performance stands at 10.5 PFLOPS , powered by approximately 705,000 Sparc64 VIIIfx cores .
The Post-K project will aim to revolutionize traditional architectures by adopting 64-bit ARMv8 as its basis . It is not yet clear whether standard ARM cores, such as the Cortex-A73 or later versions , will be used, or a solution developed directly by Fujitsu, designed to comply with the ARM specifications.
Among the possibilities under consideration is a heterogeneous approach with the integration of a GPU to further increase processing power . However, the company has not released definitive technical details.
The interest in ARM in supercomputing represents a turning point. The British company had already expressed its intention to enter the server market, still dominated by Intel, but its potential appears more promising in the supercomputer field.
Furthermore, the progressive maturation of Mali technology and its possible application as a heterogeneous accelerator could foster the development of high-performance and low-energy systems, one of the most ambitious goals in the advanced computing sector.
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