MATSOLVERSUPERLU_DIST#

Parallel direct solver package for LU factorization Use ./configure --download-superlu_dist --download-parmetis --download-metis --download-ptscotch to have PETSc installed with SuperLU_DIST

Use -pc_type lu -pc_factor_mat_solver_type superlu_dist to use this direct solver

Works with MATAIJ matrices

Options Database Keys#

  • -mat_superlu_dist_r - number of rows in processor partition

  • -mat_superlu_dist_c - number of columns in processor partition

  • -mat_superlu_dist_3d - use 3d partition, requires SuperLU_DIST 7.2 or later

  • -mat_superlu_dist_d - depth in 3d partition (valid only if -mat_superlu_dist_3d) is provided

  • -mat_superlu_dist_equil - equilibrate the matrix

  • -mat_superlu_dist_rowperm <NOROWPERM,LargeDiag_MC64,LargeDiag_AWPM,MY_PERMR> - row permutation

  • -mat_superlu_dist_colperm <NATURAL,MMD_AT_PLUS_A,MMD_ATA,METIS_AT_PLUS_A,PARMETIS> - column permutation

  • -mat_superlu_dist_replacetinypivot - replace tiny pivots

  • -mat_superlu_dist_fact - (choose one of) SamePattern, SamePattern_SameRowPerm, DOFACT

  • -mat_superlu_dist_iterrefine - use iterative refinement

  • -mat_superlu_dist_printstat - print factorization information

  • -pc_precision single - use SuperLU_DIST single precision with PETSc double precision. Currently this does not accept an options prefix, so regardless of the PC prefix you must use no prefix here

Note#

If PETSc was configured with --with-cuda then this solver will automatically use the GPUs.

See Also#

Matrices, Mat, PCLU, PCFactorSetMatSolverType(), MatSolverType, MatGetFactor()

Level#

beginner

Location#

src/mat/impls/aij/mpi/superlu_dist/superlu_dist.c

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