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NaluCFD / Nalu

Nalu: a generalized unstructured massively parallel low Mach flow code designed to support a variety of open applications of interest built on the Sierra Toolkit and Trilinos solver Tpetra solver stack. The open source BSD, clause 3 license model has been chosen for the code base. See LICENSE for more information.
https://github.com/NaluCFD/Nalu
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ECP 10: Memory reduction techniques for higher-order #7

Closed spdomin closed 7 years ago

spdomin commented 7 years ago

Activities:

  1. Establish static condensation approaches with local, fast solves.
  2. Deploy preconditioner coarsening strategies which may require only the P=1 system to be stored.
  3. Evaluate matrix-free methods for both advection/diffusion and possible PPE.
srajama1 commented 7 years ago

Is there some some pointers for reading one can start with ? What is the local, fast solve here, LU on small blocks ?

spdomin commented 7 years ago

@srajama1 take a look at the attached reference for the basics of the higher order method:

https://web.stanford.edu/group/ctr/Summer/SP14/09_Large-eddy_simulation/03_domino.pdf

Also, please interface with @rcknaus as he has some good papers on static condensation and local solves.

spdomin commented 7 years ago

Transition to Jira.