Fujitsu has upstreamed support for their next-generation “Monaka” Armv9 processor to the GNU Compiler Collection codebase in time for the GCC 15 release coming early next year.

The Fujitsu Monaka is their next generation Arm-based processor for HPC compute and AI. Slides published by Fujitsu have shown that this 2027 timed CPU will offer 144 cores x 2 sockets, using the Armv9-A architecture, 12-channel DDR memory, PCI Express 6.0 and CXL 3.0 connectivity, and will have an ultra-low voltage with support for air cooling.

These slides on Fujitsu.com for those interested in more details about the Monaka CPU.

Fujitsu Monaka is expected to power the next generation of supercomputers in a few years. Separate from the GCC patch being upstreamed today, there was a press release between Fujitsu and AMD last week that they will be working on “open-source AI initiatives” including AMD Instinct accelerator support for FUJITSU-MONAKA.

Upstream to GCC Git today is this patch from Fujitsu for adding the -mcpu=fujitsu-monaka CPU target. The cost model has not yet been adjusted compared to the Fujitsu A64FX, but will be updated in the future. The GCC patch confirms that the FUJITSU-MONAKA CPU uses Armv9.3-A with F16, FP8, LS64, RNG, CRYPTO, SVE2_AES, SVE2_BITPERM, SVE2_SHA3 and SVE2_SM4 extensions.

The GCC 15 open-source compiler should be equally stable in the form of GCC 15.1 in March-April, well ahead of the expected 2027 availability of FUJITSU-MONAKA powered servers.