<s>
The	O
Cray	B-Device
CX1	I-Device
is	O
a	O
deskside	O
high-performance	B-Architecture
workstation	B-Device
designed	O
by	O
Cray	O
Inc.	O
,	O
based	O
on	O
the	O
x86-64	B-Device
processor	O
architecture	O
.	O
</s>
<s>
It	O
comprises	O
a	O
single	O
chassis	O
blade	B-Architecture
server	I-Architecture
design	O
that	O
supports	O
a	O
maximum	O
of	O
eight	O
modular	O
single-width	O
blades	O
,	O
giving	O
up	O
to	O
96	O
processor	O
cores	O
.	O
</s>
<s>
Computational	O
load	O
can	O
be	O
run	O
independently	O
on	O
each	O
blade	O
and/or	O
combined	O
using	O
clustering	B-Architecture
techniques	O
.	O
</s>
<s>
The	O
most	O
basic	O
of	O
the	O
modular	O
blade	O
configurations	O
,	O
the	O
single-width	O
compute	O
blade	O
supports	O
dual-socket	O
Intel	O
Xeon	O
5400	O
,	O
5500	O
,	O
and	O
5600	O
series	O
processors	O
,	O
up	O
to	O
eight	O
DIMMs	B-General_Concept
of	O
DDR3	O
SDRAM	O
(	O
PC3-8500	O
)	O
,	O
and	O
two	O
2.5	O
"	O
SATA	O
HDDs	O
.	O
</s>
<s>
Originally	O
offered	O
with	O
the	O
Intel	O
E5400	O
series	O
processor	O
,	O
later	O
CX1	O
configurations	O
made	O
either	O
the	O
low-power	O
"	O
L5xxx	O
"	O
series	O
or	O
the	O
high-performance	B-Architecture
"	O
X5xxx	O
"	O
series	O
Intel	O
processors	O
available	O
to	O
customers	O
.	O
</s>
<s>
Depending	O
on	O
the	O
blade	O
model	O
,	O
both	O
Gigabit	O
Ethernet	O
and	O
DDR	O
Infiniband	B-Architecture
interconnects	O
were	O
available	O
those	O
blades	O
not	O
factory-equipped	O
with	O
Infiniband	B-Architecture
supported	O
third-party	O
additions	O
through	O
the	O
PCIe	O
expansion	O
port	O
.	O
</s>
<s>
Unlike	O
the	O
compute	O
blade	O
,	O
PCIe	O
expansion	O
was	O
not	O
available	O
in	O
the	O
storage	O
blade	O
,	O
as	O
the	O
RAID	B-Architecture
card	O
supporting	O
the	O
additional	O
hard	O
drives	O
occupied	O
this	O
port	O
.	O
</s>
<s>
Similar	O
to	O
the	O
storage	O
blade	O
expansion	O
,	O
both	O
workstation	B-Device
visualization	O
and	O
GPGPU	B-Architecture
blades	O
were	O
offered	O
,	O
taking	O
advantage	O
of	O
the	O
PCIe	O
expansion	O
port	O
to	O
extend	O
the	O
capabilities	O
of	O
the	O
base	O
compute	O
blade	O
.	O
</s>
<s>
Equipped	O
with	O
either	O
workstation	B-Device
Nvidia	B-Application
Quadro	I-Application
graphics	O
cards	O
or	O
Nvidia	B-Device
Tesla	I-Device
scientific	O
cards	O
,	O
the	O
visualization	O
configurations	O
extended	O
the	O
integrated	O
graphics	O
capabilities	O
of	O
the	O
compute	O
blade	O
and	O
offered	O
customers	O
access	O
to	O
Nvidia	O
's	O
CUDA	B-Architecture
programming	O
architecture	O
to	O
drastically	O
speed-up	O
critical	O
scientific	O
and	O
engineering	O
applications	O
.	O
</s>
<s>
In	O
addition	O
to	O
offering	O
unparalleled	O
deskside	O
performance	O
for	O
its	O
day	O
,	O
the	O
Cray	B-Device
CX1	I-Device
also	O
pioneered	O
a	O
number	O
of	O
unique	O
technologies	O
to	O
make	O
possible	O
the	O
integration	O
of	O
supercomputing	B-Architecture
into	O
the	O
traditional	O
office	O
space	O
.	O
</s>
<s>
Rather	O
than	O
requiring	O
the	O
deployment	O
of	O
separate	O
Ethernet	O
and/or	O
Infiniband	B-Architecture
networks	O
,	O
the	O
CX1	O
integrated	O
network	O
switches	O
for	O
both	O
into	O
the	O
chassis	O
to	O
facilitate	O
these	O
high-speed	O
interconnect	O
protocols	O
required	O
by	O
clustered	O
simulations	O
and	O
applications	O
.	O
</s>
<s>
Additionally	O
,	O
unlike	O
traditional	O
servers	O
and	O
supercomputers	B-Architecture
that	O
make	O
use	O
of	O
higher	O
220	O
V	O
power	O
,	O
the	O
CX1	O
's	O
redundant	O
power	O
supplies	O
were	O
designed	O
to	O
support	O
traditional	O
office	O
power	O
(	O
120	O
V	O
AC	O
,	O
20	O
A	O
)	O
.	O
</s>
<s>
The	O
CX1	O
and	O
XT5h	B-Device
are	O
fundamentally	O
different	O
architectures	O
,	O
and	O
due	O
to	O
their	O
differences	O
,	O
XT5	B-Device
blades	O
may	O
not	O
be	O
used	O
in	O
place	O
of	O
CX1	O
blades	O
,	O
and	O
vice	O
versa	O
.	O
</s>
<s>
An	O
XT5h	B-Device
supercomputer	B-Architecture
supports	O
vector	B-Operating_System
,	O
FPGA	B-Architecture
,	O
and	O
scalar	B-General_Concept
compute	O
blades	O
(	O
X2	B-Device
,	O
,	O
and	O
XT4/XT5	O
blades	O
,	O
respectively	O
)	O
,	O
typically	O
supported	O
by	O
service	O
blades	O
for	O
network	O
access	O
and	O
hosting	O
a	O
Lustre	B-Application
filesystem	I-Application
layered	O
over	O
several	O
RAID	B-Architecture
modules	O
.	O
</s>
<s>
The	O
XT5h	B-Device
's	O
operating	O
system	O
is	O
UNICOS/lc	O
,	O
a	O
combination	O
of	O
SUSE	O
Linux	O
Enterprise	O
Server	O
and	O
Sandia	O
's	O
Catamount	B-Operating_System
or	O
Cray	O
's	O
Compute	B-Application
Node	I-Application
Linux	I-Application
.	O
</s>
<s>
A	O
CX1	O
supercomputer	B-Architecture
supports	O
GPU	O
and	O
scalar	B-General_Concept
compute	O
blades	O
(	O
Nvidia	B-Application
Quadro	I-Application
and	O
Intel	O
Xeon	O
,	O
respectively	O
)	O
,	O
typically	O
supported	O
by	O
enclosed	O
network	O
switches	O
(	O
Gigabit	O
Ethernet	O
,	O
Infiniband	B-Architecture
)	O
and	O
service	O
blades	O
hosting	O
RAID	B-Architecture
modules	O
.	O
</s>
<s>
CX1-supported	O
operating	O
systems	O
include	O
Red	O
Hat	O
Enterprise	O
Linux	O
and	O
Windows	B-Operating_System
HPC	I-Operating_System
Server	I-Operating_System
2008	I-Operating_System
.	O
</s>
