<s>
NUMAlink	B-Architecture
is	O
a	O
system	O
interconnect	O
developed	O
by	O
Silicon	O
Graphics	O
(	O
SGI	O
)	O
for	O
use	O
in	O
its	O
distributed	B-Operating_System
shared	I-Operating_System
memory	I-Operating_System
ccNUMA	O
computer	O
systems	O
.	O
</s>
<s>
NUMAlink	B-Architecture
was	O
originally	O
developed	O
by	O
SGI	O
for	O
their	O
Origin	B-Application
2000	I-Application
and	O
Onyx2	B-General_Concept
systems	O
.	O
</s>
<s>
At	O
the	O
time	O
of	O
these	O
systems	O
 '	O
introduction	O
,	O
it	O
was	O
branded	O
as	O
"	O
CrayLink	B-Architecture
"	O
during	O
SGI	O
's	O
brief	O
ownership	O
of	O
Cray	O
Research	O
.	O
</s>
<s>
Hewlett	O
Packard	O
Enterprise	O
entered	O
an	O
original	O
equipment	O
manufacturer	O
(	O
OEM	O
)	O
arrangement	O
with	O
Silicon	O
Graphics	O
International	O
(	O
SGI	O
)	O
to	O
use	O
Numalink	B-Architecture
as	O
the	O
foundation	O
in	O
some	O
mission	O
critical	O
servers	O
.	O
</s>
<s>
There	O
was	O
no	O
NUMAlink	B-Architecture
1	O
,	O
as	O
SGI	O
's	O
engineers	O
deemed	O
the	O
system	O
interconnect	O
used	O
in	O
the	O
Stanford	B-Operating_System
DASH	I-Operating_System
to	O
be	O
the	O
first	O
generation	O
NUMAlink	B-Architecture
interconnect	O
.	O
</s>
<s>
NUMAlink	B-Architecture
2	O
(	O
branded	O
as	O
CrayLink	B-Architecture
)	O
was	O
announced	O
in	O
October	O
1996	O
for	O
the	O
Onyx2	B-General_Concept
visualization	B-Application
systems	O
,	O
the	O
Origin	B-Application
200	I-Application
and	O
the	O
Origin	B-Application
2000	I-Application
servers	O
and	O
supercomputers	O
.	O
</s>
<s>
The	O
NUMAlink	B-Architecture
2	O
interface	O
is	O
the	O
Hub	O
ASIC	O
.	O
</s>
<s>
NUMAlink	B-Architecture
2	O
is	O
capable	O
of	O
1.6	O
GB/s	O
of	O
peak	O
bandwidth	O
through	O
two	O
800	O
MB/s	O
,	O
PECL	O
400MHz	O
16-bit	O
unidirectional	O
links	O
.	O
</s>
<s>
NUMAlink	B-Architecture
3	O
is	O
the	O
third	O
generation	O
of	O
the	O
interconnect	O
,	O
introduced	O
in	O
2000	O
and	O
used	O
in	O
the	O
Origin	O
3000	O
and	O
Altix	B-Architecture
3000	I-Architecture
.	O
</s>
<s>
NUMAlink	B-Architecture
3	O
is	O
capable	O
of	O
3.2	O
GB/s	O
of	O
peak	O
bandwidth	O
through	O
two	O
1.6	O
GB/s	O
unidirectional	O
links	O
.	O
</s>
<s>
NUMAlink	B-Architecture
4	O
is	O
the	O
fourth	O
generation	O
of	O
the	O
interconnect	O
,	O
introduced	O
in	O
2004	O
and	O
used	O
in	O
the	O
Altix	B-Architecture
4000	I-Architecture
.	O
</s>
<s>
NUMAlink	B-Architecture
4	O
is	O
capable	O
of	O
6.4	O
GB/s	O
of	O
peak	O
bandwidth	O
through	O
two	O
3.2	O
GB/s	O
unidirectional	O
links	O
.	O
</s>
<s>
NUMAlink	B-Architecture
5	O
is	O
the	O
fifth	O
generation	O
of	O
the	O
interconnect	O
,	O
introduced	O
in	O
2009	O
and	O
used	O
in	O
the	O
Altix	B-Architecture
UV	I-Architecture
series	O
.	O
</s>
<s>
NUMAlink	B-Architecture
5	O
is	O
capable	O
of	O
15	O
GB/s	O
of	O
peak	O
bandwidth	O
through	O
two	O
7.5	O
GB/s	O
unidirectional	O
links	O
.	O
</s>
<s>
NUMAlink	B-Architecture
6	O
is	O
the	O
sixth	O
generation	O
of	O
the	O
interconnect	O
,	O
introduced	O
in	O
2012	O
and	O
used	O
in	O
the	O
SGI	O
UV	O
2000	O
,	O
SGI	O
UV	O
3000	O
,	O
SGI	O
UV	O
30	O
.	O
</s>
<s>
NUMAlink	B-Architecture
6	O
is	O
capable	O
of	O
6.7	O
GB/s	O
of	O
bidirectional	O
peak	O
bandwidth	O
for	O
up	O
to	O
256	O
socket	O
system	O
and	O
64TB	O
of	O
coherent	O
shared	O
memory	O
.	O
</s>
<s>
NUMAlink	B-Architecture
7	O
is	O
the	O
seventh	O
generation	O
of	O
the	O
interconnect	O
,	O
introduced	O
in	O
2014	O
and	O
used	O
in	O
the	O
HPE	O
Integrity	O
MC990	O
X/SGI	O
UV	O
300	O
,	O
SGI	O
UV	O
30EX	O
,	O
SGI	O
UV	O
300H	O
,	O
SGI	O
UV	O
300RL	O
.	O
</s>
<s>
NUMAlink	B-Architecture
7	O
is	O
capable	O
of	O
14.94	O
GB/s	O
of	O
bidirectional	O
peak	O
bandwidth	O
for	O
up	O
to	O
64	O
socket	O
system	O
and	O
64TB	O
of	O
coherent	O
shared	O
memory	O
.	O
</s>
<s>
NUMAlink	B-Architecture
8	O
is	O
the	O
eighth	O
generation	O
of	O
the	O
interconnect	O
,	O
introduced	O
in	O
2017	O
and	O
used	O
in	O
the	O
HPE	O
Superdome	O
Flex	O
.	O
</s>
<s>
NUMAlink	B-Architecture
8	O
is	O
capable	O
of	O
853.33	O
GB/s	O
of	O
bisection	O
peak	O
bandwidth(64 links are cut )	O
for	O
up	O
to	O
32	O
socket	O
system	O
and	O
48TB	O
of	O
coherent	O
shared	O
memory	O
.	O
</s>
