# MatCUSPARSEStorageFormat
indicates the storage format for CUSPARSE (GPU) matrices. 
## Synopsis
```
typedef enum {
  MAT_CUSPARSE_CSR,
  MAT_CUSPARSE_ELL,
  MAT_CUSPARSE_HYB
} MatCUSPARSEStorageFormat;
```
Not Collective


- ***`MAT_CUSPARSE_CSR` -*** Compressed Sparse Row
- ***`MAT_CUSPARSE_ELL` -*** Ellpack (requires CUDA 4.2 or later).
- ***`MAT_CUSPARSE_HYB` -*** Hybrid, a combination of Ellpack and Coordinate format (requires CUDA 4.2 or later).





## Developer Note
Any additions/changes here MUST also be made in include/petsc/finclude/petscmat.h


## See Also
 `MatCUSPARSESetFormat()`, `MatCUSPARSEFormatOperation`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/include/petscmat.h.html#MatCUSPARSEStorageFormat">include/petscmat.h</A>


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