Meyerson agrees with those who believe that we have reached the post-silicon era -- it's just that there is nothing to replace silicon.
"My joke is 'What’s going to come after silicon? Silicon.' " As CMOS technology is slowing down, he said he sees nothing in the next 15 to 20 years that will replace it. “It keeps running up against walls. As you keep making each element smaller, you keep running into barriers. The bottom line is you can yield devices that have millions of elements.”
Coherently Attached Processor Interface
Meanwhile, coprocessors and accelerators linked to microprocessors on coherent APIs are a major part of the future of server processors. “There is a need for accelerated systems and certain types of microprocessors like FPGAs that contain huge amounts of processing power. It would be great to run this through on an accelerated pace.”
In this context, Meyerson mentioned CAPI, the Coherently Attached Processor Interface, which provides a high-speed bus on top of PCI-E, replacing the older GX bus. CAPI can be used to attach dedicated off-chip accelerator chips such as GPUs, ASICs, and FPGAs in order to allow external components to communicate with the chip.
CAPI provides an easy on-ramp for their technology for many companies. There has been very good uptake. Nobody has a particularly extraordinary capability in the field. There are a lot of good people out there. We’ve actually attracted a fair number of folks who understand that we have a pretty good investment and a pretty good idea where the world is going. All I can say openly is there has been a very good response.
— Zewde Yeraswork, Associate Editor, EE Times