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Micro LED data interconnect for scale up networks with record energy efficiency - Bardia Pezeshki
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Engineers and researchers in high-performance computing, AI infrastructure, and optical interconnects seeking innovative solutions for data bottlenecks.
TL;DR
This video introduces a novel MicroLED data interconnect for scalable networks, offering record energy efficiency. It addresses the limitations of current copper and traditional optical interconnects, proposing a MicroLED-based solution for high-bandwidth, low-cost, and reliable data transmission in AI clusters and other demanding applications.
Key Takeaways
- MicroLED technology offers a novel approach to data interconnects, potentially overcoming limitations of traditional methods like copper cables and silicon photonics for scale-up networks.
- The proposed MicroLED interconnects aim to achieve high energy efficiency, targeting less than five picajoules per bit, which is crucial for power-intensive AI clusters.
- Unlike laser-based optics, MicroLEDs do not require complex components like isolators or temperature stabilization, simplifying design and improving reliability.
- MicroLEDs can operate at high speeds, with individual units demonstrating modulation rates of 14 gigabits per second, enabling massive parallel data transmission.
- The technology leverages existing display manufacturing techniques, allowing for the integration of millions of MicroLEDs onto silicon chips at a potentially low cost.
- By using MicroLEDs, the need for complex modulation schemes like PAM4 is eliminated, as they can simply be turned on and off to transmit data.
- This approach could enable onboard optics or co-packaged optics (CPO) solutions, significantly reducing power consumption and improving bandwidth by eliminating serializer/deserializer chips.
In This Video
- 00:00Introduction to Scale Up Interconnect
The session introduces two cutting-edge approaches to scalable compute, focusing on microLED interconnects.
- 01:29MicroLEDs for Scale Up Networks
Bardia discusses the growing interest in microLED technology for scale up interconnects, a concept initially met with skepticism.
- 01:58Current Scale Up Challenges
Existing Nvidia racks use copper cables, leading to high power consumption and limited scalability within a single rack.
- 03:04Industry Requirements for Scale Up
Nvidia requires low energy efficiency, high density, long reach, and high reliability for scale up interconnects, presenting a large market opportunity.
- 04:24Challenges with Co-Packaged Optics
Past attempts with co-packaged optics faced issues like fiber alignment, laser reliability, and thermal stability, which still persist.
- 06:03MicroLEDs as a Novel Solution
MicroLEDs offer a potential solution without lasers, leveraging display technology for high-speed data transmission.
- 07:23High-Speed MicroLED Performance
MicroLEDs can achieve high-speed operation (14 Gbps) and be densely integrated onto silicon chips, avoiding laser-related issues.
- 09:27MicroLED Chiplet Design
A chiplet design integrates display and camera sections, enabling onboard optics and significant power advantages with wide bus formats.