MATIS

MATIS = "is" - A matrix type to be used for using the Neumann-Neumann type preconditioners. This stores the matrices in globally unassembled form. Each processor assembles only its local Neumann problem and the parallel matrix vector product is handled "implicitly".

Operations Provided

MatMult - Options Database Keys:
-mat_type is -sets the matrix type to "is" during a call to MatSetFromOptions()

See Also

PC

Level:advanced
Location:
src/mat/impls/is/is.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages