YouTube Now Controls Its Hardware Roadmap
An anonymous reader shares a report: Partha Ranganathan came to realize about seven years ago that Moore's law was dead. No longer could the Google engineering VP expect chip performance to double roughly every 18 months without major cost increases, and that was a problem considering he helped Google construct its infrastructure spending budget each year. Faced with the prospect of getting a chip twice as fast every four years, Ranganathan knew they needed to mix things up. Ranganathan and other Google engineers looked at the overall picture and realized transcoding (for YouTube) was consuming a large fraction of compute cycles in its data centers. The off-the-shelf chips Google was using to run YouTube weren't all that good at specialized tasks like transcoding. YouTube's infrastructure uses transcoding to compress video down to the smallest possible size for your device, while presenting it at the best possible quality. What they needed was an application-specific integrated circuit, or ASIC -- a chip designed to do a very specific task as effectively and efficiently as possible. Bitcoin miners, for example, use ASIC hardware and are designed for that sole purpose. "The thing that we really want to be able to do is take all of the videos that get uploaded to YouTube and transcode them into every format possible and get the best possible experience," said Scott Silver, VP of engineering at YouTube. It didn't take long to sell upper management on the idea of ASICs. After a 10-minute meeting with YouTube chief Susan Wojcicki, the company's first video chip project was approved. Google started deploying its Argos Video Coding Units (VCUs) in 2018, but didn't publicly announce the project until 2021. At the time, Google said the Argos VCUs delivered a performance boost of anywhere between 20 to 33 times compared to traditional server hardware running well-tuned transcoding software. Google has since flipped the switch on thousands of second-gen Argos chips in servers around the world, and at least two follow-ups are already in the pipeline.
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