Sandia visualization researchers have collaborated with engineers from Sandia’s SIERRA Toolkit-based Nalu low Mach flow code team to integrate the ParaView/Catalyst in situ visualization library with the Nalu code. In situ visualization allows parallel simulations to perform analysis and visualization at run time in order to avoid lengthy I/O operations required for traditional post-processing analysis and visualization. The team has demonstrated Nalu with Catalyst on up to 80 nodes (2560 cores) of the Trinity-development system Mutrino in preparation for larger runs of up to 60,800 cores on the Trinity machine. The output files generated by Catalyst are used to study post-stall performance of wind turbine airfoils. (POC, Thomas Otahal and Ron Oldfield)
