<s>
Diffpack	B-Algorithm
is	O
a	O
programming	O
environment	O
for	O
developing	O
simulation	O
software	O
for	O
scientific	O
and	O
engineering	O
applications	O
.	O
</s>
<s>
Diffpack	B-Algorithm
has	O
its	O
main	O
focus	O
on	O
the	O
numerical	O
modeling	O
and	O
solution	O
of	O
partial	O
differential	O
equations	O
,	O
in	O
particular	O
by	O
the	O
finite	B-Application
element	I-Application
method	I-Application
and	O
the	O
finite	B-Algorithm
difference	I-Algorithm
method	I-Algorithm
(	O
finite	B-Algorithm
volume	I-Algorithm
method	I-Algorithm
is	O
also	O
supported	O
to	O
some	O
extent	O
)	O
.	O
</s>
<s>
The	O
Diffpack	B-Algorithm
software	O
consists	O
of	O
a	O
family	O
of	O
C++	B-Language
libraries	O
for	O
general	O
tasks	O
related	O
to	O
numerical	O
solution	O
of	O
partial	O
differential	O
equations	O
,	O
plus	O
a	O
set	O
of	O
Perl	B-Language
and	O
Python	B-Language
scripts	I-Language
that	O
ease	O
the	O
development	O
of	O
simulation	O
programs	O
and	O
problem	O
solving	O
environments	O
for	O
scientific	O
or	O
engineering	O
research	O
.	O
</s>
<s>
The	O
package	O
was	O
one	O
of	O
the	O
first	O
to	O
explore	O
object-oriented	B-Language
programming	I-Language
and	O
the	O
C++	B-Language
language	I-Language
for	O
advanced	O
,	O
high-performance	O
computing	O
.	O
</s>
<s>
Diffpack	B-Algorithm
has	O
been	O
actively	O
developed	O
since	O
1991	O
,	O
with	O
main	O
contributions	O
from	O
University	O
of	O
Oslo	O
and	O
the	O
research	O
institutes	O
SINTEF	O
and	O
Simula	O
Research	O
Laboratory	O
.	O
</s>
<s>
The	O
initiators	O
and	O
main	O
contributors	O
to	O
Diffpack	B-Algorithm
in	O
the	O
1990s	O
were	O
Hans	O
Petter	O
Langtangen	O
and	O
Are	O
Magnus	O
Bruaset	O
.	O
</s>
<s>
The	O
Norwegian	O
company	O
Numerical	O
Objects	O
AS	O
took	O
over	O
the	O
rights	O
of	O
Diffpack	B-Algorithm
1997	O
and	O
commercialized	O
the	O
product	O
.	O
</s>
<s>
In	O
2003	O
,	O
the	O
German	O
company	O
inuTech	O
GmbH	O
purchased	O
Diffpack	B-Algorithm
and	O
is	O
now	O
the	O
principal	O
maintainer	O
and	O
developer	O
of	O
the	O
software	O
.	O
</s>
<s>
Past	O
and	O
present	O
Diffpack	B-Algorithm
customers	O
include	O
AREVA	O
NP	O
,	O
Air	O
Force	O
Research	O
Laboratory	O
,	O
Robert	O
Bosch	O
GmbH	O
,	O
Cambridge	O
University	O
,	O
Canon	O
,	O
CEA	O
,	O
CalCom	O
,	O
DaimlerChrysler	O
,	O
Furukawa	O
,	O
Harvard	O
University	O
,	O
Intel	O
,	O
Mitsubishi	O
,	O
NASA	O
,	O
Nestle	O
,	O
Nippon	O
Steel	O
,	O
Shell	O
,	O
Siemens	O
,	O
Stanford	O
University	O
,	O
Statoil	O
,	O
Veritas	O
,	O
VAI	O
GmbH	O
,	O
and	O
Xerox	O
.	O
</s>
<s>
Diffpack	B-Algorithm
applications	O
have	O
been	O
built	O
in	O
diverse	O
areas	O
,	O
such	O
as	O
oil	O
and	O
gas	O
,	O
mechanical	O
engineering	O
,	O
telecommunication	O
,	O
medicine	O
and	O
finance	O
.	O
</s>
