Big.LITTLE software is not so hard

Brian Jeff, ARM
EETimes (10/9/2012 4:44 AM EDT)

One of the questions I get asked most often about ARM big.LITTLE processor technology is, "how complicated is the software?"

In big.LITTLE processors, there are two distinct CPU clusters in the applications processor subsystem, one designed for optimum energy efficiency and the other designed for maximum performance in the device power budget. Software dynamically and seamlessly moves to the right-sized ARM Cortex core, either big or LITTLE, for the work at hand. This sounds quite complicated, but in reality it is an extension of the operating system power management software in wide use today on mobile phone SoCs.

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