LWP enables applications to collect and manage performance data, and react to performance events. The collection of performance data requires no context switches. LWP runs in the context of a thread and so several counters can be used independently across multiple threads. LWP can be used in both 64-bit and legacy 32-bit modes.
For detailed information on the LWP instruction set, see the AMD Lightweight Profiling Specification available at Lightweight Profiling Specification .