Fast GPU Interconnect over Radio

52 pointsposted 12 hours ago
by montroser
(spectrum.ieee.org)

6 Comments

Animats

8 hours ago

Tiny waveguides in cable form. Cute.

qeternity

5 hours ago

As someone with no experience in the domain, this sounds really interesting.

But one of the companies mentioned has been attempting this for 9 years.

Why hasn't this taken off already? It doesn't seem we're in need of any breakthroughs. So where do the economics break down?

kristjank

4 hours ago

Precision manufacturing at scale. The physics of merging a hundred-gigahertz-scale circuit board track into a waveguide are very unforgiving. The physics governing the tolerances of said waveguide are similar.

ajb

4 hours ago

For a moment I thought this was actual co-ax, which would be supremely ironic (it was used in the early days of Ethernet, but twisted pair proved cheaper). But it looks like neither candidate has a conductive core, although they do have the conductive shell.

kristjank

4 hours ago

Coax, or more accurately twin-ax is still the underlying technology for Direct Attachment Copper cables for Ethernet using pluggable modules.

fancyfredbot

5 hours ago

Very clever stuff. I wonder how their power consumption compares to copper with a retimer.