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...so granted me experience on dynamic environments and code instrumentation. More recently, I have been working with Software Transactional Memory (STM), building a light-weight user-level transaction scheduler. We achieved great results in this project, pushing the boundaries of STM performance. Ba- sicaly, we implemented a heuristic to predict transaction con icts, if we nd that a transaction is likely going to abort, we switch contexts at user-level to start executing another transaction. One major advantage of our system is that we have complete control of which transactions are currently running...