PETScWrappers::MPI::SparseMatrix::Traits Struct Reference

List of all members.

Static Public Attributes

static const bool zero_addition_can_be_elided = false

Detailed Description

A structure that describes some of the traits of this class in terms of its run-time behavior. Some other classes (such as the block matrix classes) that take one or other of the matrix classes as its template parameters can tune their behavior based on the variables in this class.


Member Data Documentation

It is not safe to elide additions of zeros to individual elements of this matrix. The reason is that additions to the matrix may trigger collective operations synchronising buffers on multiple processes. If an addition is elided on one process, this may lead to other processes hanging in an infinite waiting loop.


The documentation for this struct was generated from the following file:

deal.II documentation generated on Mon Nov 23 22:58:32 2009 by doxygen 1.6.1