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


## Options Database Keys

- ***-mat_type sell -*** sets the matrix type to "sell" during a call to MatSetFromOptions()





## See Also
 `MATAIJ`, `MATBAIJ`, `MATSBAIJ`, `MatCreateSELL()`, `MatCreateSeqSELL()`, `MATSEQSELL`, `MATMPISELL`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/impls/sell/mpi/mpisell.c.html#MATSELL">src/mat/impls/sell/mpi/mpisell.c</A>


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