SuperLU (Sparse Direct Solver)
SuperLU (Sparse Direct Solver)
SuperLU (Sparse Direct Solver)
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How to distribute the matrices?• Matrices involved:• A, B (turned into X) – input, users manipulate them• L, U – output, users do not need to see them• A (sparse) and B (dense) are distributed by block rowsP0P1x x x xx x xAx x xBLocal A stored inCompressed Row FormatP2x x x• Natural for users, and consistent with other popular packages: PETSc,Aztec, etc.Short Course on the DOE ACTS Collection - SIAM CSE05 ConferenceOrlando, FL - February 11, 200514