A Multi-Level Library for Understanding I/O Activity in HPC Applications
We believe that multi-level I/O tracing and trace data analysis tool can help end users understand the behavior of their application and I/O subsystem, and can provide insights into the source of I/O performance bottlenecks.
Recorder is a multi-level I/O tracing framework that can capture I/O function calls at multiple levels of the I/O stack, including HDF5, MPI-IO, and POSIX I/O. Recorder requires no modification or recompilation of the application and users can control what levels are traced.
Recorder documentation is at https://recorder.readthedocs.io/.
