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Abstract Modern astrophysics and cosmology generate petabyte-scale datasets that demand advanced tools for scalable visualization and analysis. The Visualization Interface for the Virtual Observatory (VisIVO) provides multi-dimensional data exploration, but its integration with heterogeneous computing infrastructures and data-intensive workflows has remained challenging. Here we present a portable and reproducible approach that combines VisIVO with the StreamFlow workflow engine and the CAPIO middleware. StreamFlow enables hybrid execution across cloud-HPC environments, while CAPIO injects transparent I/O streaming into legacy file-based pipelines without modifying application code. Together, these technologies accelerate high–performance visualization, improve reproducibility, and reduce I/O bottlenecks. We demonstrate our approach on large-scale cosmological simulations produced with ChaNGa and GADGET-based codes, including studies of massive neutrinos in the DEMNUni suite. Our results show that streaming-enhanced workflows deliver up to 50% performance gains and enable interactive, scalable visualization across distributed infrastructures, paving the way for exascale-ready scientific discovery.
Sciacca et al. (Thu,) studied this question.
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