YouTube is now constructing its personal video-transcoding chips

Enlarge / A Google Argos VCU. It transcodes video in a short time. (credit score: Google)
Google has determined that YouTube is such an enormous transcoding workload that it must construct its personal server chips. The corporate detailed its new “Argos” chips in a YouTube weblog submit, a CNET interview, and in a paper for ASPLOS, the Architectural Help for Programming Languages and Working Methods Convention. Simply as there are GPUs for graphics workloads and Google’s TPU (Tensor processing unit) for AI workloads, the YouTube infrastructure staff says it has created the “VCU” or “Video (trans)Coding Unit,” which helps YouTube transcode a single video into over a dozen variations that it wants to offer a easy, bandwidth-efficient, worthwhile video web site.
Google’s Jeff Calow stated the Argos chip has introduced “as much as 20-33x enhancements in compute effectivity in comparison with our earlier optimized system, which was working software program on conventional servers.” The VCU package deal is a full-length PCI-E card and appears so much like a graphics card. A board has two Argos ASIC chips buried below a huge, passively cooled aluminum warmth sink. There’s even what seems like an 8-pin energy connector on the top, as a result of PCI-E simply is not sufficient energy. Google additionally supplied a beautiful chip diagram, itemizing 10 “encoder cores” on every chip, with Google’s white paper including that “all different parts are off-the-shelf IP blocks.” Google says that “every encoder core can encode 2160p in realtime, as much as 60 FPS (frames per second) utilizing three reference frames.”
The playing cards are particularly designed to fit into Google’s warehouse-scale computing system. Every compute cluster in YouTube’s system may have a piece of devoted “VCU machines” loaded with the brand new playing cards, saving Google from having to crack open each server and cargo it with a brand new card. Google says the playing cards resemble GPUs as a result of that is what suits in its current accelerator trays. CNET stories that “hundreds of the chips are working in Google knowledge facilities proper now” and, due to the playing cards, particular person video workloads like 4K video “will be out there to look at in hours as a substitute of the times it beforehand took.”Learn Eight remaining paragraphs | Feedback

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