The CHPC National conference took place in the first week of December, and it had some interesting talks. All the Videos are viewable on YouTube

https://www.chpcconf2021.co.za/

The last keynote was by Prof Thomas Sterling, of Indiana University, where in a wide-ranging retrospective of HPC technology, he talked at the end about :-

https://events.chpc.ac.za/event/98/contributions/1535/

• “A brief discussion of early attempts of memory-centric computing such as SIMD and PIM will motivate revolutionary concepts of the future. Questions from the audience will be welcome assuming remote communication technology permits.”

You can watch his presentation here.