GLEAN: In situ Visualization and Analysis

GLEAN is  a flexible and extensible framework that takes application, analysis, and system characteristics into account to facilitate simulation-time data analysis and I/O acceleration. The GLEAN infrastructure hides significant details from the end user, while at the same time providing a flexible intterface to the fastest path for their data and analysis needs and, in the end, scientific insight. It provides an infrastructure for accelerating I/O, interfacing to running simulations for co-analysis, and/or an interface for in situ analysis with zero or minimal modifications to the existing application code base. Nonintrusive integration is achieved by seamlessly embedding GLEAN in higher-level I/O li- braries such as pnetcdf and hdf5.