At the recent CDNLive! India user conference, Deepak Venkatesan and Murtaza Johar representing ARM India gave a fascinating presentation called "Verifying big.LITTLE using the Palladium XP".
ARM's big.LITTLE platform contains the combination of Cortex A15 MPCores - for high performance required in compute intensive applications - with Cortex A7 MPCores, allowing low power execution of the majority of workloads. Key to big.LITTLE is the switching between the cores, which is enabled using a Cache Coherent Interconnect - the CCI-400 fabric.
Let's first look at the results of using Palladium XP.
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