clayne writes: "AMD "Light-Weight Profiling" Proposal — AMD "Light-Weight Profiling" (LWP) is the first specification under AMD's Hardware Extensions for Software Parallelism initiative. This initiative will encompass a broad set of innovations designed to improve software parallelism, and thus application performance, through new hardware features in future versions of AMD processors. LWP is a technology designed to increase the performance of software applications by providing a mechanism that allows software to more effectively leverage the benefits of multi-core processing. It is a CPU mechanism that could have broad benefit to software including, but not limited to, runtime environments such as Sun Microsystems' Java Virtual Machine and Microsoft's
LWP 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 like Java and .NET, which can run multiple threads and are used to develop an increasingly large percentage of applications. — Full specification (PDF)"