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
PCprefix 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#
Examples#
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages