PETSc version v3.15.4-939-g9da6b9be94
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PCMAT

A preconditioner obtained by multiplying by the preconditioner matrix supplied in PCSetOperators() or KSPSetOperators()

Notes

This one is a little strange. One rarely has an explicit matrix that approximates the inverse of the matrix they wish to solve for.

See Also

PCCreate(), PCSetType(), PCType (for list of available types), PC,
PCSHELL

Level

intermediate

Location

src/ksp/pc/impls/mat/pcmat.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages