[Libre-soc-dev] video assembler

[Jacob Lifshay]

On Mon, May 10, 2021, 13:33 Luke Kenneth Casson Leighton <lkcl at lkcl.net>
wrote:

> On Monday, May 10, 2021, Jacob Lifshay <programmerjake at gmail.com> wrote:
>
> > On Mon, May 10, 2021, 12:00 Luke Kenneth Casson Leighton <lkcl at lkcl.net>
> > wrote:
> >
> > > basically, cycle accurate when in the context of simulator discussions
> > > means *program order* instruction accurate, it does *not* mean
> *hardware
> > > clock cycle tick* accurate.
> > >
> >
> > my point is that "hardware clock cycle tick" accurate is the kind needed
> > for benchmarking,
>
>
> yes, except we are about 6-8 months away from having hardware where such
> statistics would, even if measured accurately, even be meaningful.
>
> recall at the beginning of this thread, i mentioned that TestIssuer (the
> extremely easy and fast to develop HDL) is an IPC of *below* 0.1
>
> we need even a basic in-order engine to get meaningful results.
>
> counting the number of instructions executed is going to be the closest
> measure to Jeff Bush's metric that we can get, for about another 6 months.
>

Yup!

>
> unless someone comes forward and offers to help do some work on the
> hardware side.
>

I'm currently writing the vector-math library for Kazan and Rust std::simd,
maybe I can help after that?

Jacob