dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

In GenericMatrix, we have the following functions in addition to the
GenericTensor interface (not counting the virtual functions add, get,
set that are specializations of the corresponding functions in
GenericTensor):

  /// Initialize M x N matrix with given maximum number of nonzeros in each row
  virtual void init(uint M, uint N, uint nzmax) = 0;
    
  /// Initialize M x N matrix with given number of nonzeros per row
  virtual void init(uint M, uint N, const uint nz[]) = 0;

  /// Set all entries to zero
  virtual void zero() = 0;

  /// Set given rows to identity matrix
  virtual void ident(const uint rows[], uint m) = 0;

Since we have init(SparsityPattern), it looks to me like the first two
could be removed.

How about zero() and ident(), do we need them for assembly?

We could say that init() should zero out the matrix and use set()
instead of ident(). Or perhaps we should stick to ident() so we can
map it to MatZeroRowsIS(A, is, one) in PETSc?

/Anders


On Mon, Apr 16, 2007 at 01:37:15PM +0200, DOLFIN wrote:
> One or more new changesets pushed to the primary DOLFIN repository.
> A short summary of the last three changesets is included below.
> 
> changeset:   2849:25bd777364d1b8bcc1ac36e39089b653d39bf075
> tag:         tip
> user:        "Garth N. Wells <g.n.wells@xxxxxxxxxx>"
> date:        Mon Apr 16 13:37:02 2007 +0200
> files:       configure configure.ac src/kernel/la/dolfin/GenericMatrix.h src/kernel/la/dolfin/uBlasMatrix.h
> description:
> Fix configure and remove some functions from GenericMatrix.
> 
> 
> changeset:   2848:42b0e2f7e1698615393798e1f540918d4e571ea9
> parent:      2847:6ffac525dc2e8beee3250f45f4da369927b51734
> parent:      2846:c7d5e0ce18f10fbff31fb5fa200b61cca062582a
> user:        "Garth N. Wells <g.n.wells@xxxxxxxxxx>"
> date:        Mon Apr 16 12:53:09 2007 +0200
> files:       
> description:
> merge
> 
> 
> changeset:   2847:6ffac525dc2e8beee3250f45f4da369927b51734
> parent:      2844:695032c059f4aed5ee4a2da71ae295607491fa9b
> user:        "Garth N. Wells <g.n.wells@xxxxxxxxxx>"
> date:        Mon Apr 16 12:52:17 2007 +0200
> files:       src/kernel/io/VTKFile.cpp
> description:
> Small changes in VTKFile.
> 
> 
> ----------------------------------------------------------------------
> For more details, visit http://www.fenics.org/hg/dolfin
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