alt Hacker News> I'd rather look at all the data available
There is no data to suggest RISCV can ever be competitive in the large core space. The longer this absence goes on (now approaching 15 years) the more evidence there is that it is structurally incapable of competitive implementations.
If you wanted to create a project to distract a whole generation of computer architects from getting anywhere this is exactly what it would look like.
Replies
Narishma • today at 9:17 PM
> There is no data to suggest RISCV can ever be competitive in the large core space.
There is also no data to suggest otherwise.
RISC-V was a young, purely academic project in 2011. The pivot to industry came in 2015. This was followed by announcements by companies that they were shifting to RISC-V, but guess what, it takes time. For example Western Digital announced in 2017 but shipped only in 2021.
Now consider that RVA23 was ratified only two years ago, and the server platform specification 6 months ago! This bigger standardized base is important for larger cores, and of course these cores take longer to develop than the small ones like Western Digital's.
I share the frustration with the lack of competitive application cores (looks like extending an ISA through open and collaborative processes takes more time than in a company). But is it not a bit early to judge the ISA's potential based on the chips on shelves today?
Anyway large RISC-V cores do exist. The SiFive P870-D is a 6-wide core you can buy now with the BigSky SF-2U870. Ascalon (8-wide) has been available as IP for a while (though I will grant you I don't know how competitive it will be when it's finally taped out).
Oh and the Arbel by NextSilicon (10-wide, 480-entry ROB) has been taped out. Is that large enough?