<s>
SiCortex	B-Operating_System
was	O
a	O
supercomputer	B-Architecture
manufacturer	O
founded	O
in	O
2003	O
and	O
headquartered	O
in	O
Clock	O
Tower	O
Place	O
,	O
</s>
<s>
The	O
Register	O
reported	O
that	O
Gerbsman	O
Partners	O
was	O
hired	O
to	O
sell	O
SiCortex	B-Operating_System
's	O
intellectual	O
properties	O
.	O
</s>
<s>
While	O
SiCortex	B-Operating_System
had	O
some	O
sales	O
,	O
selling	O
at	O
least	O
75	O
prototype	O
supercomputers	B-Architecture
to	O
several	O
large	O
customers	O
,	O
the	O
company	O
had	O
never	O
produced	O
an	O
operating	O
profit	O
and	O
ran	O
out	O
of	O
venture	O
capital	O
.	O
</s>
<s>
The	O
company	O
built	O
and	O
marketed	O
a	O
family	O
of	O
clusters	B-Architecture
of	O
between	O
12	O
and	O
972	O
compute	O
nodes	O
,	O
connected	O
in	O
a	O
Kautz	O
graph	O
.	O
</s>
<s>
The	O
clusters	B-Architecture
are	O
the	O
SC5832	O
,	O
SC648	O
and	O
SC072	O
.	O
</s>
<s>
It	O
was	O
reported	O
that	O
the	O
company	O
has	O
been	O
working	O
on	O
the	O
next	O
generation	O
of	O
clusters	B-Architecture
since	O
March	O
2009	O
,	O
but	O
development	O
ceased	O
when	O
operations	O
were	O
closed	O
.	O
</s>
<s>
It	O
has	O
972	O
nodes	O
,	O
5,832	O
cores	B-Architecture
and	O
972	O
to	O
7,776	O
GB	O
of	O
memory	O
.	O
</s>
<s>
It	O
has	O
108	O
nodes	O
,	O
648	O
cores	B-Architecture
and	O
108	O
to	O
864	O
GB	O
of	O
memory	O
.	O
</s>
<s>
Each	O
node	O
is	O
system-on-chip	B-Architecture
(	O
SoC	O
)	O
,	O
codenamed	O
ICE9	O
,	O
consisting	O
of	O
six	O
cores	B-Architecture
that	O
implement	O
the	O
MIPS64	B-Device
instruction	B-General_Concept
set	I-General_Concept
architecture	I-General_Concept
(	O
ISA	O
)	O
.	O
</s>
<s>
The	O
six	O
cores	B-Architecture
have	O
their	O
own	O
256	O
KB	O
L2	O
cache	O
,	O
which	O
can	O
be	O
accessed	O
by	O
other	O
cores	B-Architecture
.	O
</s>
<s>
The	O
MIPS	O
cores	B-Architecture
execute	O
instructions	O
in-order	O
and	O
have	O
a	O
six-stage	O
pipeline	O
.	O
</s>
<s>
Message	O
passing	O
,	O
via	O
MPI	B-Application
,	O
is	O
the	O
presumptive	O
programming	O
model	O
.	O
</s>
<s>
SiCortex	B-Operating_System
systems	O
run	O
a	O
customized	O
Linux	B-Application
distribution	O
derived	O
from	O
Gentoo	B-Application
Linux	I-Application
.	O
</s>
