Alberto Vecchiato

The MPI + CUDA Gaia AVU-GSR Parallel Solver Toward Next-generation Exascale Infrastructures

We ported to the GPU with CUDA the Astrometric Verification Unit-Global Sphere Reconstruction (AVU-GSR) Parallel Solver developed for the ESA Gaia mission, by optimizing a previous OpenACC porting...

The Gaia AVU-GSR parallel solver: preliminary studies of a LSQR-based application in perspective of exascale systems

The Gaia Astrometric Verification Unit-Global Sphere Reconstruction (AVU-GSR) Parallel Solver aims to find the astrometric parameters for $\sim$10$^8$ stars in the Milky Way, the attitude and the...

Covariances computation in the Gaia AVU-GSR Parallel Solver with I/O techniques: a performance study as a function of writing cycle length

Solving a very large-scale sparse linear system with a parallel algorithm in the Gaia mission

AVU-GSR Gaia Mission: A Hybrid Solution for HPC and Grid-MPI Infrastructures

Performance portability via C++ PSTL, SYCL, OpenMP, and HIP: the Gaia AVU-GSR case study

Workshop Scientific HPC in the pre-Exascale era (part of ITADATA 2024) Proceedings

The proceedings of Workshop Scientific HPC in the pre-Exascale era (SHPC), held in Pisa, Italy, September 18, 2024, are part of 3rd Italian Conference on Big Data and Data Science (ITADATA2024)...