<s>
SLEPc	B-Library
is	O
a	O
software	B-Library
library	I-Library
for	O
the	O
parallel	O
computation	O
of	O
eigenvalues	O
and	O
eigenvectors	O
of	O
large	O
,	O
sparse	O
matrices	O
.	O
</s>
<s>
It	O
can	O
be	O
seen	O
as	O
a	O
module	O
of	O
PETSc	B-Language
that	O
provides	O
solvers	O
for	O
different	O
types	O
of	O
eigenproblems	O
,	O
including	O
linear	O
(	O
standard	O
and	O
generalized	O
)	O
and	O
nonlinear	O
(	O
quadratic	O
,	O
polynomial	O
and	O
general	O
)	O
,	O
as	O
well	O
as	O
the	O
SVD	O
.	O
</s>
<s>
It	O
uses	O
the	O
MPI	B-Application
standard	O
for	O
parallelization	O
.	O
</s>
<s>
When	O
using	O
SLEPc	B-Library
,	O
the	O
application	O
programmer	O
can	O
use	O
any	O
of	O
the	O
PETSc	B-Language
's	O
data	O
structures	O
and	O
solvers	O
.	O
</s>
<s>
Other	O
PETSc	B-Language
features	O
are	O
incorporated	O
into	O
SLEPc	B-Library
as	O
well	O
,	O
such	O
as	O
command-line	O
option	O
setting	O
,	O
automatic	O
profiling	O
,	O
error	O
checking	O
,	O
portability	O
to	O
virtually	O
all	O
computing	O
platforms	O
,	O
etc	O
.	O
</s>
<s>
Interface	O
to	O
some	O
external	O
eigensolvers	O
,	O
such	O
as	O
ARPACK	B-Application
and	O
BLOPEX	O
.	O
</s>
<s>
Support	O
for	O
preconditioned	O
eigensolvers	O
(	O
such	O
as	O
Jacobi-Davidson	O
)	O
by	O
using	O
the	O
preconditioners	O
provided	O
by	O
PETSc	B-Language
.	O
</s>
