A specification called “Light-Weight Profiling” (LWP), a mechanism for software to more effectively leverage the benefits of multicore processing, describes technology supporting the recently introduced “Hardware Extensions for Software Parallelism” initiative. The spec is a set of new hardware features to improve software parallelism in future processors and covers a CPU mechanism that could have broad benefit to software including runtime environments such as Java Virtual Machine and .NET Framework.
The technology is designed to enable code to make dynamic and real-time decisions about how best to improve the performance of concurrently running tasks, using techniques such as memory organization and code layout, with very little overhead. These capabilities are particularly beneficial to runtime environments which can run multiple threads, as are now used with many applications. (No charge—available now.)
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