Section: New Results

Performance monitoring and Steering Framework

Two frameworks were developed within the context of the project H2020 EXA2PRO to offer performance monitoring and steering APIs into the StarPU runtime system, to be targeted by external tools.

The performance monitoring framework enables StarPU to export performance counters in a generic, safe, extensible way, to give external tools access to internal metrics and statistics, such as the peak number of tasks in the dependence waiting queue, the cumulated execution time by worker thread, and the number of ready tasks of a given kind waiting for an execution slot.

The performance steering framework defines a set of runtime-actionable knobs that can be used to steer the execution of an application on top of StarPU from an external tool, with similar properties of genericity, safety and extensibility as the performance monitoring framework.