Re:Fujitsu launches made-in-Japan next-generation CPU FUJITS...
by sam1714 on Friday September 18, 2026 @04:03PM
(#49759474)
My understanding is the lots of small cores are for applications where you have lots of simple, independent tasks that tend to be IO-bound: web and other front-end servers, databases, transaction processing. SMT is optimal here because you can execute other threads while waiting for IO.
I haven't been closely following it, but the Intel E-cores are definitely less wide and have less execution units. The FPU/Vector hardware is 128-bits wide instead of 256. If you ask it to do 256-bit SIMD, the front-end breaks it into 2 operations.
Still, iirc FPU's were silicon heavy back in those days and it'd be interesting to know how far ahead the foundries Sun and Fujitsu were, maybe it was simply a factor of being too far behind in the foundry race that left Sun with few options.
Intel's E-Cores still are functionally complete for most parts though (excl Avx512?)? Todays limits seems to be memory bandwidth and power and I guess many of the 144 core customers are in it for virtualization and servers?