An anonymous reader shares a report: It is almost a decade since Rick Rashid, then head of research at Microsoft, posed that question and ventured his own answer: no more than a few, at least to handle the vast majority of the planet's digital workload. Back then, he thought, it was possible to discern the emergence of a small group of companies that would run those computers. The give-away was that a fifth of all the servers sold in the world were already being purchased by a clutch of US tech groups that included Amazon, Google and Microsoft. [...] Of course, "how many" is a trick question when it comes to the distributed computing systems being built by today's tech giants. There are many nodes to these octopus-like systems, each with its own silicon brain and information-processing capabilities. But they are connected to a greater whole. One sign of just how far their tentacles are starting to reach came this week with Google's announcement that it has designed an AI chip to run in smartphones and other devices. Google's TPUs -- processors that are optimised to both train deep-learning algorithms and then apply them to make inferences from new data -- are already a key part of its data centre infrastructure. The new low-power version of the TPU can make inferences in "edge" devices, far from the computing core, and will be an important element in making sense of the world's data. [...] The rise of the global computers raises many questions, but two stand out: will they comprise a truly competitive market, or come to look like the more Balkanised "platform" markets in the consumer world? And what will it mean for so much computing power to be concentrated in a handful of private companies? The good news is that the cloud landscape is shaping up to be a competitive one, at least if competition can be said to truly exist between oligarchs.
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