PetIGA: A framework for high-performance isogeometric analysis

Lisandro Dalcin, N. Collier, Philippe Vignal, Adriano Mauricio Cortes, Victor M. Calo

Research output: Contribution to journalArticlepeer-review

68 Scopus citations

Abstract

We present PetIGA, a code framework to approximate the solution of partial differential equations using isogeometric analysis. PetIGA can be used to assemble matrices and vectors which come from a Galerkin weak form, discretized with Non-Uniform Rational B-spline basis functions. We base our framework on PETSc, a high-performance library for the scalable solution of partial differential equations, which simplifies the development of large-scale scientific codes, provides a rich environment for prototyping, and separates parallelism from algorithm choice. We describe the implementation of PetIGA, and exemplify its use by solving a model nonlinear problem. To illustrate the robustness and flexibility of PetIGA, we solve some challenging nonlinear partial differential equations that include problems in both solid and fluid mechanics. We show strong scaling results on up to 40964096 cores, which confirm the suitability of PetIGA for large scale simulations.
Original languageEnglish (US)
Pages (from-to)151-181
Number of pages31
JournalComputer Methods in Applied Mechanics and Engineering
Volume308
DOIs
StatePublished - May 26 2016

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Computational Mechanics
  • Computer Science Applications

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