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# MATBAIJMKL
MATBAIJMKL = "BAIJMKL" - A matrix type to be used for sparse matrices. This matrix type is identical to `MATSEQBAIJMKL` when constructed with a single process communicator,
and `MATMPIBAIJMKL` otherwise.  As a result, for single process communicators,
`MatSeqBAIJSetPreallocation()` is supported, and similarly `MatMPIBAIJSetPreallocation()` is supported
for communicators controlling multiple processes.  It is recommended that you call both of
the above preallocation routines for simplicity.


## Options Database Key

- ***-mat_type baijmkl -*** sets the matrix type to `MATBAIJMKL` during a call to `MatSetFromOptions()`





## See Also
 [](ch_matrices), `Mat`, `MatCreateBAIJMKL()`, `MATSEQBAIJMKL`, `MATMPIBAIJMKL`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/impls/baij/mpi/baijmkl/mpibaijmkl.c.html#MATBAIJMKL">src/mat/impls/baij/mpi/baijmkl/mpibaijmkl.c</A>


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