> For my above rules, I split on an IPC of 1.0. Where did I get that from? I made it up, based on my prior work with PMCs. Here's how you can get a value that's

> For my above rules, I split on an IPC of 1.0. Where did I get that from? I made it up, based on my prior work with PMCs. Here's how you can get a value that's custom for your system and runtime: write two dummy workloads, one that is CPU bound, and one memory bound. Measure their IPC, then calculate their mid point.