:orphan:
# MatProductAlgorithm
String with the name of an algorithm for a PETSc matrix product implementation 
## Synopsis
```
typedef const char *MatProductAlgorithm;
#define MATPRODUCTALGORITHMDEFAULT         "default"
#define MATPRODUCTALGORITHMSORTED          "sorted"
#define MATPRODUCTALGORITHMSCALABLE        "scalable"
#define MATPRODUCTALGORITHMSCALABLEFAST    "scalable_fast"
#define MATPRODUCTALGORITHMHEAP            "heap"
#define MATPRODUCTALGORITHMBHEAP           "btheap"
#define MATPRODUCTALGORITHMLLCONDENSED     "llcondensed"
#define MATPRODUCTALGORITHMROWMERGE        "rowmerge"
#define MATPRODUCTALGORITHMOUTERPRODUCT    "outerproduct"
#define MATPRODUCTALGORITHMATB             "at*b"
#define MATPRODUCTALGORITHMRAP             "rap"
#define MATPRODUCTALGORITHMNONSCALABLE     "nonscalable"
#define MATPRODUCTALGORITHMSEQMPI          "seqmpi"
#define MATPRODUCTALGORITHMBACKEND         "backend"
#define MATPRODUCTALGORITHMOVERLAPPING     "overlapping"
#define MATPRODUCTALGORITHMMERGED          "merged"
#define MATPRODUCTALGORITHMALLATONCE       "allatonce"
#define MATPRODUCTALGORITHMALLATONCEMERGED "allatonce_merged"
#define MATPRODUCTALGORITHMALLGATHERV      "allgatherv"
#define MATPRODUCTALGORITHMCYCLIC          "cyclic"
#if defined(PETSC_HAVE_HYPRE)
  #define MATPRODUCTALGORITHMHYPRE "hypre"
#endif

```



## See Also
 [](sec_matmatproduct), [](ch_matrices), `MatSetType()`, `Mat`, `MatProductSetAlgorithm()`, `MatProductType`

## Level
beginner

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


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