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Università della Svizzera italiana

Large scale simulation of pressure induced phase-field fracture propagation using Utopia

Zulian, Patrick ; Kopaničáková, Alena ; Nestola, Maria Giuseppina Chiara ; Fink, Andreas ; Fadel, Nur Aiman ; VandeVondele, Joost ; Krause, Rolf

In: CCF transactions on high performance computing, 2021, no. 3, p. 407–426

Non-linear phase field models are increasingly used for the simulation of fracture propagation problems. The numerical simulation of fracture networks of realistic size requires the efficient parallel solution of large coupled non-linear systems. Although in principle efficient iterative multi-level methods for these types of problems are available, they are not widely used in practice due to...

Haute école de gestion de Genève

OAIS compliant digital archiving in DNA

Andriamahady, Dina ; Makhlouf Shabou, Basma (Dir.)

Mémoire de bachelor : Haute école de gestion de Genève, 2021 ; TDB 2462.

Time and space have been among the main concerns for archivists for a very long time. In other words, how to keep information accessible and understandable for the longest time and how to organize the ever-growing amount of data. Average storage media longevity is short from an archival point of view and similarly, technological progress leads to media obsolescence. Furthermore, media decay over...

Università della Svizzera italiana

Analyzing system performance with probabilistic performance annotations

Rogora, Daniele ; Carzaniga, Antonio (Dir.) ; Soulé, Robert (Codir.)

Thèse de doctorat : Università della Svizzera italiana, 2020 ; 2020INFO024.

Understanding the performance of software is complicated. For several performance metrics, in addition to the algorithmic complexity, one must also consider the dynamics of running a program within different combinations of hardware and software environments. Such dynamical aspects are not visible from the code alone, and any kind of static analysis falls short. For example, in reality, the...

Università della Svizzera italiana

Multilevel minimization in trust-region framework : algorithmic and software developments

Kopaničáková, Alena ; Krause, Rolf (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2020 ; 2020INFO021.

The field of scientific computing is associated with the modeling of complex physical phenomena. The resulting numerical models are often described by differential equations, which, in many cases, can be related to non-convex minimization problems. Thus, after discretization, the solution of large-scale non-convex optimization problem is required. Various iterative solution strategies can be...