<s>
The	O
Sunway	B-Device
TaihuLight	I-Device
(	O
Shénwēi·tàihú	O
zhī	O
guāng	O
)	O
is	O
a	O
Chinese	O
supercomputer	B-Architecture
which	O
,	O
,	O
is	O
ranked	O
fourth	O
in	O
the	O
TOP500	B-Operating_System
list	O
,	O
with	O
a	O
LINPACK	B-Device
benchmark	I-Device
rating	O
of	O
93	O
petaflops	O
.	O
</s>
<s>
This	O
is	O
nearly	O
three	O
times	O
as	O
fast	O
as	O
the	O
previous	O
Tianhe-2	B-Device
,	O
which	O
ran	O
at	O
34	O
petaflops	O
.	O
</s>
<s>
,	O
it	O
is	O
ranked	O
as	O
the	O
16th	O
most	O
energy-efficient	O
supercomputer	B-Architecture
in	O
the	O
Green500	B-Application
,	O
with	O
an	O
efficiency	O
of	O
6.051	O
GFlops/watt	O
.	O
</s>
<s>
It	O
was	O
designed	O
by	O
the	O
National	O
Research	O
Center	O
of	O
Parallel	O
Computer	O
Engineering	O
&	O
Technology	O
(	O
NRCPC	O
)	O
and	O
is	O
located	O
at	O
the	O
National	B-Device
Supercomputing	I-Device
Center	I-Device
in	O
Wuxi	O
in	O
the	O
city	O
of	O
Wuxi	O
,	O
in	O
Jiangsu	O
province	O
,	O
China	O
.	O
</s>
<s>
The	O
Sunway	B-Device
TaihuLight	I-Device
was	O
the	O
world	O
's	O
fastest	B-Operating_System
supercomputer	I-Operating_System
for	O
two	O
years	O
,	O
from	O
June	O
2016	O
to	O
June	O
2018	O
,	O
according	O
to	O
the	O
TOP500	B-Operating_System
lists	O
.	O
</s>
<s>
The	O
record	O
was	O
surpassed	O
in	O
June	O
2018	O
by	O
IBM	O
's	O
Summit	B-Device
.	O
</s>
<s>
The	O
Sunway	B-Device
TaihuLight	I-Device
uses	O
a	O
total	O
of	O
40,960	O
Chinese-designed	O
SW26010	B-General_Concept
manycore	B-General_Concept
64-bit	O
RISC	B-Architecture
processors	I-Architecture
based	O
on	O
the	O
Sunway	B-Device
architecture	I-Device
.	O
</s>
<s>
Each	O
processor	O
chip	O
contains	O
256	O
processing	O
cores	O
,	O
and	O
an	O
additional	O
four	O
auxiliary	O
cores	O
for	O
system	O
management	O
(	O
also	O
RISC	B-Architecture
cores	O
,	O
just	O
more	O
fully	O
featured	O
)	O
for	O
a	O
total	O
of	O
10,649,600	O
CPU	O
cores	O
across	O
the	O
entire	O
system	O
.	O
</s>
<s>
The	O
processing	O
cores	O
feature	O
64KB	O
of	O
scratchpad	B-General_Concept
memory	I-General_Concept
for	O
data	O
(	O
and	O
16KB	O
for	O
instructions	O
)	O
and	O
communicate	O
via	O
a	O
network	B-Architecture
on	I-Architecture
a	I-Architecture
chip	I-Architecture
,	O
instead	O
of	O
having	O
a	O
traditional	O
cache	B-General_Concept
hierarchy	I-General_Concept
.	O
</s>
<s>
The	O
system	O
runs	O
on	O
its	O
own	O
operating	O
system	O
,	O
Sunway	B-Device
RaiseOS	O
2.0.5	O
,	O
which	O
is	O
based	O
on	O
Linux	B-Application
.	O
</s>
<s>
The	O
system	O
has	O
its	O
own	O
customized	O
implementation	O
of	O
OpenACC	B-Operating_System
2.0	I-Operating_System
to	O
aid	O
the	O
parallelization	O
of	O
code	O
.	O
</s>
<s>
China	O
's	O
first	O
exascale	B-General_Concept
supercomputer	B-Architecture
was	O
scheduled	O
to	O
enter	O
service	O
by	O
2020	O
according	O
to	O
the	O
head	O
of	O
the	O
school	O
of	O
computing	O
at	O
the	O
National	O
University	O
of	O
Defense	O
Technology	O
(	O
NUDT	O
)	O
.	O
</s>
<s>
According	O
to	O
the	O
national	O
plan	O
for	O
the	O
next	O
generation	O
of	O
high	B-Architecture
performance	I-Architecture
computers	I-Architecture
,	O
the	O
country	O
would	O
have	O
develop	O
an	O
exascale	B-General_Concept
computer	I-General_Concept
during	O
the	O
13th	O
Five-Year-Plan	O
period	O
(	O
2016	O
–	O
2020	O
)	O
.	O
</s>
<s>
The	O
government	O
of	O
Tianjin	O
Binhai	O
New	O
Area	O
,	O
NUDT	O
and	O
the	O
National	B-Device
Supercomputing	I-Device
Center	I-Device
of	O
Tianjin	O
are	O
working	O
on	O
the	O
project	O
.	O
</s>
