MATSCALAPACK#

“scalapack” - A matrix type for dense matrices using the ScaLAPACK package Use ./configure --download-scalapack to install PETSc to use ScaLAPACK

Options Database Keys#

  • -mat_type scalapack - sets the matrix type to MATSCALAPACK

  • -pc_factor_mat_solver_type scalapack - to use this direct solver with the option -pc_type lu

  • -mat_scalapack_grid_height - sets Grid Height for 2D cyclic ordering of internal matrix

  • -mat_scalapack_block_sizes - size of the blocks to use (one or two integers separated by comma)

Note#

Note unlike most matrix formats, this format does not store all the matrix entries for a contiguous range of rows on an MPI rank. Use MatGetOwnershipIS() to determine what values are stored on the given rank.

See Also#

Matrices, Mat, MATSCALAPACK, MATDENSE, MATELEMENTAL, MatGetOwnershipIS(), MatCreateScaLAPACK()

Level#

intermediate

Location#

src/mat/impls/scalapack/matscalapack.c

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages