MatCreateAIJViennaCL#
Creates a sparse matrix in MATAIJ (compressed row) format (the default parallel PETSc format).  This matrix will ultimately be pushed down to GPUs and use the ViennaCL library for calculations.
Synopsis#
Collective
Input Parameters#
- comm - MPI communicator, set to - PETSC_COMM_SELF
- m - number of rows, or - PETSC_DECIDEif- Mis provided
- n - number of columns, or - PETSC_DECIDEif- Nis provided
- M - number of global rows in the matrix, or - PETSC_DETERMINEif- mis provided
- N - number of global columns in the matrix, or - PETSC_DETERMINEif- nis provided
- d_nz - number of nonzeros per row in DIAGONAL portion of local submatrix (same value is used for all local rows) 
- d_nnz - array containing the number of nonzeros in the various rows of the DIAGONAL portion of the local submatrix (possibly different for each row) or - NULL, if- d_nzis used to specify the nonzero structure. The size of this array is equal to the number of local rows, i.e- m. For matrices you plan to factor you must leave room for the diagonal entry and put in the entry even if it is zero.
- o_nz - number of nonzeros per row in the OFF-DIAGONAL portion of local submatrix (same value is used for all local rows). 
- o_nnz - array containing the number of nonzeros in the various rows of the OFF-DIAGONAL portion of the local submatrix (possibly different for each row) or - NULL, if- o_nzis used to specify the nonzero structure. The size of this array is equal to the number of local rows, i.e- m.
Output Parameter#
- A - the matrix 
Notes#
It is recommended that one use the MatCreate(), MatSetType() and/or MatSetFromOptions(),
MatXXXXSetPreallocation() paradigm instead of this routine directly.
[MatXXXXSetPreallocation() is, for example, MatSeqAIJSetPreallocation()]
The AIJ format, also called compressed row storage), is fully compatible with standard Fortran storage. That is, the stored row and column indices can begin at either one (as in Fortran) or zero.
See Also#
Mat, MatCreate(), MatCreateAIJ(), MatCreateAIJCUSPARSE(), MatSetValues(), MatSeqAIJSetColumnIndices(), MatCreateSeqAIJWithArrays(),
MATMPIAIJVIENNACL, MATAIJVIENNACL
Level#
intermediate
Location#
src/mat/impls/aij/mpi/mpiviennacl/mpiaijviennacl.cxx
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