Numerical factorization - PowerPoint PPT Presentation

Richard Vondráček Department of Structural Mechanics Faculty of Civil Engineering

The Use of The Sparse Direct Solver in The Engineering Applications of The Finite Element Method Pou žití přímého řídkého řešiče v inženýrských aplikacích metody konečných prvků. Richard Vondráček Department of Structural Mechanics Faculty of Civil Engineering

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Sparse matrix data structure

Sparse matrix data structure. Typically either Compressed Sparse Row (CSR) or Compressed Sparse Column (CSC) Informally “ia-ja” format CSR is better for matrix-vector multiplies; CSC can be better for factorization CSR: Array of all values, row by row Array of all column indices, row by row

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