Extrae is the instrumentation package that captures information during the program execution and generates Paraver (and Dimemas) traces
The up-to-date sources can be found at the BSC Performance Tools repository: https://github.com/bsc-performance-tools/extrae
The project-developed GASPI extension to extrae is located at the GASPI branch of the BSC Performance Tools repository: https://github.com/bsc-performance-tools/extrae/tree/GASPI