News for hackers. Stuff that matters.

A comment on VRoom A high end RISC-V implementation. Parent comment

Re:VRoom A high end RISC-V implementation by ncmncm on Monday March 21, 2022 @05:06PM (#30759707)
Are you making any attempt at a learning branch predictor? Is anything published about really-current methods?
[ Parent | on HN ]
Re:VRoom A high end RISC-V implementation by Taniwha on Monday March 21, 2022 @05:16PM (#30759796)
Not yet - I have a pretty generic combined bimodal/global predictor - there's a lot of research on BTCs - it's easy to throw gates at this area - I can imagine chips hitting 20-30% BTC in area just to keep the rest running

My next set of work in this area will be integrating an L0 trace cache into the existing BTC - that will help me greatly up the per-clock issue rate

[ Parent | on HN ]