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I don't think they meant cost, I think they mean like replacing your PCI bus with optical interfaces.
by foota 2y ago
I don't think they meant cost, I think they mean like replacing your PCI bus with optical interfaces.
- wmf 2y agoIt's not less energy and it's not cheaper; the only advantage is distance.
- riobard 2y agoWhat about reducing interference? Optics would be better right?
- yvdriess 2y agoThat's true when you compare electrical vs optical links for NICs in datacenters. But this is about Silcon Photonics, which changes the equation significantly. e.g. it can be used for on-chip optical interconnects. The silicon real estate being used for interconnect fabric PHIs is becoming significant and, unlike compute, do not scale well with node shrinks. On-die photonics means you can cut out a big chunk of your PHIs and avoid the the latency of going to NICs. The PIUMA architecture even used on-die switches to avoid having to use external switches. https://www.tomshardware.com/news/intel-demoes-8-core-528-thread-puma-chip-with-1-tbs-silicon-photonics https://www.tomshardware.com/news/intel-demoes-8-core-528-th...
- Scipio_Afri 2y agoSignal integrity is easier with no EMI nor impedance matching needed. These issues get worse as the frequency increases (which is one of the things used to increase throughput).