# MATSEQAIJVIENNACL
MATAIJVIENNACL = "aijviennacl" = "seqaijviennacl" - A matrix type to be used for sparse matrices. A matrix type type whose data resides on GPUs. These matrices are in CSR format by
default. All matrix calculations are performed using the ViennaCL library.


## Options Database Keys

- ***-mat_type aijviennacl -*** sets the matrix type to `MATSEQAIJVIENNACL` during a call to `MatSetFromOptions()
- ***-mat_viennacl_storage_format csr -*** sets the storage format of matrices for `MatMult()` during a call to `MatSetFromOptions()`.
- ***-mat_viennacl_mult_storage_format csr -*** sets the storage format of matrices for `MatMult()` during a call to `MatSetFromOptions()`.





## See Also
 `MatCreateSeqAIJViennaCL()`, `MATAIJVIENNACL`, `MatCreateAIJViennaCL()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/impls/aij/seq/seqviennacl/aijviennacl.cxx.html#MATSEQAIJVIENNACL">src/mat/impls/aij/seq/seqviennacl/aijviennacl.cxx</A>


---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/mat/impls/aij/seq/seqviennacl/aijviennacl.cxx)


[Index of all Mat routines](index.md)  
[Table of Contents for all manual pages](/docs/manualpages/index.md)  
[Index of all manual pages](/docs/manualpages/singleindex.md)  
