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About a decade ago, as an intern helping research this, I developed an app to manually tag processes as "big core only" or "little core only" etc. This was for the QuickIA[0], which had a Xeon in one socket and an Atom in the other. It was fun to kick off a gigantic compression task and watch the "expected time to completion" progress bar change dramatically when you migrated the process between sockets.

You all would probably find the "QuickIA Software Support" section interesting, they go through a few issues you run into when you have incompatible micro architectures running in a single system. It also might help illuminate where Intel's head was at during the early research phase of creating a heterogeneous processor.

[0] https://www.neotextus.net/hpca12.pdf



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