Re: [tech-aia] RISC-V ACLINT specification is now hosted on RISC-V GitHub
On Fri, May 28, 2021 at 2:44 PM Josh Scheid <jscheid@...> wrote:
More recent ARM SBSA requires a 1 GHz counter resolution, but does not place any requirement on the actual measurable 'time" resolution (i.e. a minimum update frequency). So one can have 1 ns resolution in the 'time' counter value, but the actual measurable granularity could be just 1 us.
Upping the standard counter resolution seems of little or secondary value. It's the actual maximum granularity or resolution of measurable time that matters. Which no one in RISC-V (or ARM SBSA) seems willing or wanting to require actual 1 ns resolution to time measurements.