<s>
The	O
cosmic	O
microwave	O
background	O
(	O
CMB	O
)	O
is	O
the	O
thermal	O
radiation	O
assumed	O
to	O
be	O
left	O
over	O
from	O
the	O
"	O
Big	B-Application
Bang	I-Application
"	O
of	O
cosmology	O
.	O
</s>
<s>
The	O
code	O
is	O
written	O
in	O
an	O
object	B-Language
oriented	I-Language
manner	O
to	O
make	O
it	O
more	O
user	O
friendly	O
.	O
</s>
<s>
CMBEASY	O
is	O
fully	O
object	B-Language
oriented	I-Language
C++	B-Language
.	O
</s>
<s>
Its	O
name	O
also	O
comes	O
from	O
the	O
fact	O
that	O
it	O
is	O
written	O
in	O
object-oriented	B-Language
style	O
mimicking	O
the	O
notion	O
of	O
class	O
.	O
</s>
<s>
Classes	O
are	O
a	O
programming	O
feature	O
available	O
,	O
e.g.	O
,	O
in	O
C++	B-Language
and	O
Python	B-Language
,	O
but	O
these	O
languages	O
are	O
known	O
to	O
be	O
less	O
vectorizable/parallelizable	O
than	O
plain	O
C	B-Language
(	O
or	O
Fortran	B-Application
)	O
,	O
and	O
hence	O
potentially	O
slower	O
.	O
</s>
<s>
CLASS	O
is	O
written	O
in	O
plain	O
C	B-Language
for	O
high	O
performance	O
,	O
while	O
organizing	O
the	O
code	O
in	O
a	O
few	O
modules	O
that	O
reproduce	O
the	O
architecture	O
and	O
philosophy	O
of	O
C++	B-Language
classes	O
,	O
for	O
optimal	O
readability	O
and	O
modularity	O
.	O
</s>
<s>
The	O
code	O
is	O
written	O
in	O
C++	B-Language
and	O
uses	O
the	O
global	O
metropolis	O
algorithm	O
for	O
estimation	O
of	O
cosmological	O
parameters	O
.	O
</s>
<s>
CosmoMC	O
is	O
a	O
Fortran	B-Application
2003	O
Markov	B-General_Concept
chain	I-General_Concept
Monte	I-General_Concept
Carlo	I-General_Concept
(	O
MCMC	O
)	O
engine	O
for	O
exploring	O
cosmological	O
parameter	O
space	O
.	O
</s>
<s>
SCoPE/Slick	O
Cosmological	O
Parameter	O
Estimator	O
is	O
a	O
newly	O
developed	O
cosmological	O
MCMC	O
package	O
written	O
by	O
Santanu	O
Das	O
in	O
C	B-Language
language	I-Language
.	O
</s>
<s>
and	O
it	O
consists	O
of	O
several	O
Fortran	B-Application
subroutines	O
and	O
stand-alone	O
facilities	O
,	O
that	O
can	O
be	O
used	O
to	O
estimate	O
the	O
BipoSH	O
coefficients	O
from	O
non	O
statistically	O
isotropic	O
(	O
nSI	O
)	O
skymaps	O
.	O
</s>
