<s>
MUMPS	B-Application
(	O
MUltifrontal	O
Massively	O
Parallel	O
sparse	B-Algorithm
direct	O
Solver	O
)	O
is	O
a	O
software	O
application	O
for	O
the	O
solution	O
of	O
large	O
sparse	B-Algorithm
systems	I-Algorithm
of	O
linear	O
algebraic	O
equations	O
on	O
distributed	B-Operating_System
memory	I-Operating_System
parallel	B-Operating_System
computers	I-Operating_System
.	O
</s>
<s>
The	O
software	O
implements	O
the	O
multifrontal	B-Application
method	I-Application
,	O
which	O
is	O
a	O
version	O
of	O
Gaussian	B-Algorithm
elimination	I-Algorithm
for	O
large	O
sparse	B-Algorithm
systems	I-Algorithm
of	O
equations	O
,	O
especially	O
those	O
arising	O
from	O
the	O
finite	B-Application
element	I-Application
method	I-Application
.	O
</s>
<s>
It	O
is	O
written	O
in	O
Fortran	O
90	O
with	O
parallelism	B-Operating_System
by	O
MPI	B-Application
and	O
it	O
uses	O
BLAS	B-Application
and	O
ScaLAPACK	B-Application
kernels	O
for	O
dense	B-Algorithm
matrix	I-Algorithm
computations	O
.	O
</s>
<s>
Since	O
1999	O
,	O
MUMPS	B-Application
has	O
been	O
supported	O
by	O
CERFACS	O
,	O
IRIT-ENSEEIHT	O
,	O
and	O
INRIA	O
.	O
</s>
<s>
The	O
importance	O
of	O
MUMPS	B-Application
lies	O
in	O
the	O
fact	O
that	O
it	O
is	O
a	O
supported	O
free	B-Application
implementation	O
of	O
the	O
multifrontal	B-Application
method	I-Application
.	O
</s>
