<s>
Tsubame	B-Device
is	O
a	O
series	O
of	O
supercomputers	B-Architecture
that	O
operates	O
at	O
the	O
GSIC	O
Center	O
at	O
the	O
Tokyo	O
Institute	O
of	O
Technology	O
in	O
Japan	O
,	O
designed	O
by	O
Satoshi	O
Matsuoka	O
.	O
</s>
<s>
The	O
Sun	O
Microsystems-built	O
Tsubame	B-Device
1.0	O
began	O
operation	O
in	O
2006	O
achieving	O
85	O
TFLOPS	O
of	O
performance	O
,	O
it	O
was	O
the	O
most	O
powerful	O
supercomputer	B-Architecture
in	O
Japan	O
at	O
the	O
time	O
.	O
</s>
<s>
The	O
system	O
consisted	O
of	O
655	O
InfiniBand	B-Architecture
connected	O
nodes	O
,	O
each	O
with	O
a	O
8	O
dual-core	O
AMD	B-General_Concept
Opteron	I-General_Concept
880	O
and	O
885	O
CPUs	O
and	O
32GB	O
of	O
memory	O
.	O
</s>
<s>
Tsubame	B-Device
1.0	O
also	O
included	O
600	O
ClearSpeed	B-General_Concept
X620	O
Advance	O
cards	O
.	O
</s>
<s>
In	O
2008	O
,	O
Tsubame	B-Device
was	O
upgraded	O
with	O
170	O
Nvidia	B-Device
Tesla	I-Device
S1070	O
server	O
racks	O
,	O
adding	O
at	O
total	O
of	O
680	O
Tesla	B-Device
T10	O
GPU	O
processors	O
for	O
GPGPU	B-Architecture
computing	O
.	O
</s>
<s>
This	O
increased	O
performance	O
to	O
170	O
TFLOPS	O
,	O
making	O
it	O
at	O
the	O
time	O
the	O
second	O
most	O
powerful	O
supercomputer	B-Architecture
in	O
Japan	O
and	O
29th	O
in	O
the	O
world	O
.	O
</s>
<s>
Tsubame	B-Device
2.0	I-Device
was	O
built	O
in	O
2010	O
by	O
HP	O
and	O
NEC	O
as	O
a	O
replacement	O
to	O
Tsubame	B-Device
1.0	O
.	O
</s>
<s>
It	O
has	O
1,400	O
nodes	O
using	O
six-core	O
Xeon	B-Device
5600	O
and	O
eight-core	O
Xeon	B-Device
7500	O
processors	O
.	O
</s>
<s>
The	O
system	O
also	O
included	O
4,200	O
of	O
Nvidia	B-Device
Tesla	I-Device
M2050	O
GPGPU	B-Architecture
compute	O
modules	O
.	O
</s>
<s>
Tsubame	B-Device
2.0	I-Device
was	O
further	O
upgrade	O
to	O
2.5	O
in	O
2014	O
,	O
replacing	O
all	O
of	O
the	O
Nvidia	O
M2050	O
GPGPU	B-Architecture
compute	O
modules	O
with	O
Nvidia	B-Device
Tesla	I-Device
Kepler	O
K20x	O
compute	O
modules	O
.	O
</s>
<s>
Tsubame	B-Device
KFC	O
added	O
oil	O
based	O
liquid	O
cooling	O
to	O
reduce	O
power	O
consumption	O
.	O
</s>
<s>
In	O
February	O
2017	O
,	O
Tokyo	O
Institute	O
of	O
Technology	O
announced	O
it	O
would	O
add	O
a	O
new	O
system	O
Tsubame	B-Device
3.0	O
.	O
</s>
<s>
It	O
was	O
developed	O
with	O
SGI	O
and	O
is	O
focused	O
on	O
artificial	B-Application
intelligence	I-Application
and	O
targeting	O
12.2	O
PFLOPS	O
of	O
double	O
precision	O
performance	O
.	O
</s>
<s>
The	O
design	O
is	O
reported	O
to	O
utilize	O
2,160	O
Nvidia	B-Device
Tesla	I-Device
P100	O
GPGPU	B-Architecture
modules	O
,	O
in	O
addition	O
to	O
Intel	B-Device
Xeon	I-Device
E5-2680	O
v4	O
processors	O
.	O
</s>
<s>
Tsubame	B-Device
3.0	O
ranked	O
13th	O
at	O
8125	O
TFLOPS	O
on	O
the	O
November	O
2017	O
list	O
of	O
the	O
TOP500	B-Operating_System
supercomputer	B-Architecture
ranking	O
.	O
</s>
<s>
It	O
ranked	O
1st	O
on	O
the	O
June	O
2017	O
list	O
of	O
the	O
Green500	B-Application
energy	O
efficiency	O
ranking	O
at	O
14.110	O
GFLOPS/watts	O
.	O
</s>
