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Hello worlds examples for PadawanFS POSIX based in-transit post-processing tool.

This repo provides minimal examples in C and Python that make use of pdwfs. They mimic a simple scientific application workflow, i.e. a simulation running and writing data followed by a post-processing that reads the output data, does a small treatment and writes the final result on the file system. Data written by the simulation and then read by the post-processing are handled by pdwfs and thus stays in the machine's memory. The file system is never involved here as POSIX calls to write and read these data are intercepted by pdwfs and redirected towards in memory redis servers.

C language

• Serial and MPI parallel hello world
• Serial and MPI parallel hello world with time evolution
• Full MPI parallel large data (MPI-IO and pHDF5) with time evolution

Python language